Hydrobiologia
DOI 10.1007/s10750-013-1639-x
Review Paper
FRESHWATER BIVALVES
Bivalve distribution in hydrographic regions in South
America: historical overview and conservation
Daniel Pereira • Maria Cristina Dreher Mansur • Leandro D. S. Duarte •
Arthur Schramm de Oliveira • Daniel Mansur Pimpão • Cláudia Tasso Callil •
Cristián Ituarte • Esperanza Parada • Santiago Peredo • Gustavo Darrigran •
Fabrizio Scarabino • Cristhian Clavijo • Gladys Lara • Igor Christo Miyahira •
Maria Teresa Raya Rodriguez • Carlos Lasso
Received: 19 January 2013 / Accepted: 25 July 2013
Ó Springer Science+Business Media Dordrecht 2013
Abstract Based on literature review and malacological collections, 168 native freshwater bivalve and
five invasive species have been recorded for 52
hydrographic regions in South America. The higher
species richness has been detected in the South
Atlantic, Uruguay, Paraguay, and Amazon Brazilian
hydrographic regions. Presence or absence data were
analysed by Principal Coordinate for PhylogenyWeighted. The lineage Veneroida was more representative in hydrographic regions that are poorer in
species and located West of South America. The
Guest editors: Manuel P. M. Lopes-Lima, Ronaldo G. Sousa,
Simone G. P. Varandas, Elsa M. B. Froufe & Amı́lcar A.
T. Teixeira / Biology and Conservation of Freshwater Bivalves
D. Pereira (&) M. C. D. Mansur L. D.
S. Duarte A. S. de Oliveira M. T. R. Rodriguez
PPECO/CENECO/UFRGS – Programa de Pós-Graduação
em Ecologia, Centro de Ecologia, Universidade Federal
do Rio Grande do Sul, Av. Bento Gonçalves n. 9500,
Porto Alegre, RS 91540-000, Brazil
e-mail: dani.mdourado@gmail.com
Mycetopodidae and Hyriidae lineages were predominant in regions that are richest in species toward the
East of the continent. The distribution of invasive
species Limnoperna fortunei is not related to species
richness in different hydrographic regions there. The
species richness and its distribution patterns are
closely associated with the geological history of the
continent. The hydrographic regions present distinct
phylogenetic and species composition regardless of
the level of richness. Therefore, not only should the
richness be considered to be a criterion for prioritizing
areas for conservation, but also the phylogenetic
diversity of communities engaged in services and
functional aspects relevant to ecosystem maintenance.
A plan to the management of this fauna according to
C. T. Callil
NEPA/UFMT – Núcleo de Estudos Ecológicos do
Pantanal, Universidade Federal de Mato Grosso, Av.
Fernando Correa da Costa, 2367, Cuiabá,
MT 78060-900, Brazil
e-mail: callil@ufmt.br
L. D. S. Duarte
e-mail: duarte.ldus@gmail.com
C. Ituarte
MACN – Museo Argentino de Ciencias Naturales
Bernardino Rivadavia, Av. Angel Gallardo 470,
140 50 JR Buenos Aires, Argentina
e-mail: ituarte@macn.gov.ar
D. M. Pimpão
IBAMA – Instituto Brasileiro do Meio Ambiente e dos
Recursos Naturais Renováveis, Rua 229 n. 95, Setor Leste
Universitário, Goiânia, GO 74605-090, Brazil
e-mail: danielpimpao@yahoo.com.br
E. Parada S. Peredo
ECOHYD – Plataforma de Investigación en
Ecohidrologı́a y Ecohidráulica), Almirante Rivero 075,
Providencia, Santiago, Chile
e-mail: esperanza.parada@ecohyd.com
M. C. D. Mansur
e-mail: mcrismansur@gmail.com
123
Hydrobiologia
particular ecological characteristics and human uses of
hydrographic regions is needed.
Keywords Bivalve South America
Literature review Scientific collections
Phylogenetic composition
Literature review
Earlier works on the freshwater bivalves of South
America (from *1800 to *1890) are descriptive and
consist of illustrated catalogs of species collected by
naturalists during exploratory expeditions along river
basins (Spix, 1827; Orbigny, 1835, 1846; Hupé, 1857).
Shells acquired from travelers or merchants, or
through exchange with colleagues or amateurs, have
been described and cataloged by collectors and
naturalists such as Maton (1811), Lamarck (1819),
Lea (1834, 1838, 1852, 1857, 1860, 1863, 1869,
1874), Philippi (1847), Küster (1842), Sowerby (1864,
1867, 1868, 1869a, b), among others. Most scientific
collections were private and would be eventually sold
or donated to European museums (Dance, 1966;
Olazarri, 1975; Haag, 2012). At that time, descriptions
of new species were extremely poor, largely vague,
and based on outdated concepts containing few
illustrations and mostly from single specimens. Some
of these catalogs were more iconographic than
descriptive. In some cases, with the intent of showing
the beauty shells, some conchological features were
overlooked by designers. This fact led to misunderstandings and wrong identification at the genus or
species levels. Very often, collecting localities were
G. Darrigran
FCNyM/UNLP – Museo de La Plata, Paseo del Bosque
s/n8, 1900 La Plata, Argentina
e-mail: invasion@fcnym.unlp.edu.ar
F. Scarabino C. Clavijo
MNHNM – Museo Nacional de Historia Natural, 25 de
mayo 582 – CC. 399, CP. 11000 Montevideo, Uruguay
e-mail: fscara@gmail.com
G. Lara
Lab. de Limnologı́a y Recursos Hı́dricos, Facultad de
Recursos Naturales, UCT – Universidad Católica de
Temuco, Rudecindo Ortega 02950. Campus Norte,
Temuco, Chile
e-mail: glara@uct.cl
123
unknown or poorly documented, consisting of vague
references such as the continent or country name
where a species was collected. Sometimes, old local
names of rivers and lakes are no longer used, making
the collection site difficult to locate.
In a subsequent period (*1890–1960), special
attention was given to the works of Simpson (1900,
1914) who published a summary and a catalog of
World Unionoida, including South American species.
This publication includes redescriptions, lists of synonyms, and significant taxonomic comments, with
many species being labeled as incertae sedis. Hermann
von Ihering emigrated from Germany to Brazil and
lived there for many years, where he studied and
collected bivalve mollusks, starting in the State of Rio
Grande do Sul. Some years later, he moved to São
Paulo to open the Museu de Zoologia da Universidade
de São Paulo in 1895. Ihering organized the malacological collection and published over 35 articles on
mollusks (Vaz, 1986), including checklists and identification keys of taxa from several drainages from
Brazil and neighboring countries (Ihering, 1890, 1893,
1910). He also revisited the bivalve species described
by Spix and Lamarck (Ihering, 1890, 1910) by
examining the types. He was the first researcher to
see and describe the lasidium (Ihering, 1891) larvae of
Mycetopodidae, which is very similar to the haustorium of African species of the same Etherioidea
superfamily (Wächtler et al., 2001). Unfortunately,
due to political problems during WWI, Ihering was
forced to leave both the museum and the country, and
ended up selling his collection to European museums.
In the early twentieth century, a pioneering initiative
by local researchers attempted to catalog bivalves.
I. C. Miyahira
Lab. de Malacologia, UERJ – Universidade do Estado do
Rio de Janeiro, Rua São Francisco Xavier, 524, sala
525/2, Maracanã, Rio de Janeiro, RJ 20550-900, Brazil
e-mail: icmiyahira@yahoo.com.br
C. Lasso
IAVH – Instituto de Investigación de Recursos Biológicos
Alexander von Humboldt, Calle 28 A 15-09, Bogotá D.C.,
Colombia
e-mail: classo@humboldtt.org.co
Hydrobiologia
Among them, we can mention Formica-Corsi (1900)
who looked at Uruguayan bivalves, as well as Morretes (1949, 1953) who worked with the mollusks from
Brazil. Ortmann (1921) was the first researcher to
include anatomical traits of the soft parts of adults and
the glochidia larvae in the descriptions of his species.
He proposed the first studies on phylogenetic relationships among Unionoida. However, his studies were not
given the right recognition by his future fellow scholars.
Many Unionoida and Veneroida species were
described for hydrographic basins located in Patagonia, Venezuela, Colombia, and Uruguay by Marshall (1916, 1922, 1924, 1927a, b, 1928, 1930) and
Pilsbry (1896, 1897). Many new species were
described (Baker, 1914, 1930) after conducting North
American expeditions in the Amazon region, Brazil,
and Venezuela. The 433 species of Unionoida
described from South America were reduced by Haas
(1930, 1931a, b, 1969) to 124, based primarily on shell
characteristics. He mentioned 70 species and subspecies of Hyriidae and 54 Mycetopodidae.
With Argentino Bonetto and his team from Argentina, a new period (from *1960 to present) pioneered
by South American morphologists and taxonomists
began. A series of morphological and taxonomic studies
were published including the description of many
species of glochidia and lasidia of South American
freshwater bivalves (Bonetto, 1961a, b, 1962, 1963,
1964, 1965, 1966, 1967a, b, 1972, 1997); Bonetto &
Ezcurra-de-Drago, 1966; Bonetto et al., 1986).
At the end of the last century, malacology was
consolidated in many South American universities,
mainly Argentina, Brazil, Chile, Uruguay, and in other
research institutions like: Instituto Miguel Lillo at
Tucuman and Instituto Nacional de Limnologı́a at Santa
Fé (both in Argentina), Plataforma de Investigación en
Ecohidrologı́a y Ecohidraúlica at Santiago (Chile),
Museo Nacional de Historia Natural de Montevideo
(Uruguay), and Fundação Zoobotânica do Rio Grande
do Sul at Porto Alegre (Brazil). From there, the study of
freshwater bivalve became more consolidated resulting
in several important scientific publications (Olazarri,
1963, 1966, 1975; Mansur, 1970, 1972, 1974, 1999;
Veitenheimer, 1973a, b; Hebling & Penteado, 1974;
Mansur & Veitenheimer, 1975; Hebling, 1976; Veitenheimer & Mansur, 1978a, b; Mansur & VeitenheimerMendes, 1979; Alvarenga & Ricci, 1979a, b, 1989;
Mansur & Anflor, 1981; Mansur et al., 1987, 1988, 1991,
1994;; Mansur & Garces, 1988; Mansur & Campos-
Velho, 1990, 2000; Mansur & Silva, 1990, 1999; Ricci
et al., 1990; Mansur & Valer, 1992; Simone, 1994,
1997, 1999, 2006; Mansur & Olazarri, 1995; Avelar &
Mendonça, 1998; Serrano et al., 1998; Pereira et al.,
2000, 2011, 2012; Callil & Mansur, 2002, 2005, 2007;
Mansur & Pereira, 2006; Scarabino & Mansur, 2007;
Mansur & Pimpão, 2008; Pimpão et al., 2008, 2012;
Lasso et al., 2009; Pimpão & Mansur, 2009). Chilean
researchers carried out multiple studies on Diplodon
chilensis documenting its ecology (Lara & Parada,
1991, 2009; Lara & Moreno, 1995; Lara et al., 2002a,
b; Grandón et al., 2008), taxonomy (Parada & Peredo,
2002), morphology (Parada et al., 1989a; Valdovinos
& Pedreros, 2007), reproduction (Peredo & Parada,
1984, 1986, Parada et al., 1987, 1990; Peredo et al.,
1990), life history (Parada et al., 1989b, Parada &
Peredo, 1994), genetics (Jara-Seguel et al., 2000;
Peredo et al., 2003), distribution (Lara & Parada, 1988,
2008; Parada et al., 2007), and relocation (Parada &
Peredo, 2005; Peredo et al., 2005). This intensive
effort propelled D. chilensis as the best known species
of Hyriidae in the continent.
Considering the order Veneroida, Spix (1827),
Orbigny (1835, 1846), Anton (1837), Baker (1930),
Clessin (1879, 1888), Josseaume (1889), Pilsbry
(1897, 1911), described the first species of Sphaeriidae
from South America. Later, South American researchers described and cataloged several species for that
continent: Doello-Jurado (1921), Meier-Brook (1967),
Ituarte (1989, 1994a, 1995, 1996, 1999, 2000, 2001,
2004, 2005, 2007), Ituarte & Mansur (1993), Ituarte &
Korniushin (2006), Klappenbach (1962), Mansur &
Meier-Brook, (2000), and Mansur et al. (2008).
Parodiz & Hennings (1965) reviewed the 30 species
of Corbiculidae described for the Paraná/Paraguay and
Uruguay basins. The authors concluded that only
Cyanocyclas (= Necorbicula) limosa (Maton, 1811)
and Cyanocyclas paranensis (Orbigny, 1835) would
be valid species, whereas the others would be synonymized. Nevertheless, the species cited for the Amazon [Cyanocyclas amazonica (Prime, 1870) and
Cyanocyclas brasiliana (Deshayes, 1854)], and more
to the North of South America [Cyanocyclas bavayi
(Ancey, 1880); Cyanocyclas cuneata (Jonas, 1844);
Cyanocyclas rotunda (Prime, 1860) and Cyanocyclas
surinamica (Clessin, 1879)] need revision. Later,
Ituarte (1994b) presented important publications that
provided diagnostic morphological and reproductive
data of invasive species Corbicula fluminea (Müller,
123
Hydrobiologia
1774) and Corbicula largillierti (Philippi, 1884)
compared to native species C. limosa. Martins et al.
(2004) reviewed the Corbiculidae invasive species in
Southern Brazil looking at morphological and conchological characters. Two known Dreissenidae species and Anticorbula fluviatilis (Adams, 1860), the last
placed with doubts inside Myoida, requires taxonomic
revisions. Darrigran & Damborenea (2009) and Mansur et al. (2012c) compiled a series of studies on
Limnoperna fortunei (Dunker, 1857) after the invasion
in South America since 1991.
Recently, Simone (2006) has published an illustrated catalog of the continental mollusks of Brazil and
neighboring countries, which cited 120 species of
freshwater bivalves. Despite this massive effort, many
genera and species were listed without the proper
taxonomic revision. Furthermore, synonyms of different species were brought together without considering
advances in the study of the larvae.
Biological characterization
In South America, there are three lineages of freshwaters Bivalvia: Mytiloida, Unionoida, and Veneroida. According to Simone (1999), the systematic
definition of A. fluviatilis into Lyonsiidae and Myoida
was used as a temporary suggestion.
Mytiloida is represented by the invasive species L.
fortunei commonly known as golden mussel. L. fortunei is native from Asia, and was probably brought to
South America via ballast water in 1991 (Darrigran &
Pastorino, 1995; Mansur et al., 2003b, 2004a, b;
Santos et al., 2012). With morphological characteristics similar to marine mussels (Mansur, 2012), it
presents the complete larval cycle in the plankton
(Mansur et al., 2012a) and after recruitment forms
macroclusters. L. fortunei is very aggressive to the
environment since it modifies the landscape, the flora,
and benthic fauna as an ‘‘ecosystem engineer’’ (Darrigran & Damborenea, 2011). In built environments
that use untreated water for cooling, the golden mussel
causes clogging with considerable economic losses
(Darrigran et al., 2007).
The Unionoida are commonly known as freshwater
mussels or only mussels, without marine members.
They can be found all over the world except for
Antarctica. In South America, this order is represented
by two families, Hyriidae and Mycetopodidae,
123
comprising of only native species. They normally
have from 2 to 10 cm in length though they can be
longer, but according to Castellanos & Landoni
(1990), Mycetopoda soleniformis (Orbigny, 1835)
can reach up to 22 cm in length. They are considered
to be good biological (Pereira et al., 2011) and
paleoenvironment (Wesselingh, 2006) indicators.
During geological time, these bivalves were the first
to adapt to freshwater. Fossil record of freshwater
bivalve Anthraconauta Pruvost, 1930, from the Carboniferous and Permian (late Paleozoic era) (Pellant,
1996), hold many similarities to the current species
(Parodiz, personal communication). The unionids are
very biodiverse. They have an amazing life cycle and
strategies allowing survival in extreme situations, such
as waterfalls, drought, and flood pulses. In the larval
stage, most are temporary fish parasites. The larvae
form cysts on the gills, scales, and fish fins. After
1 month, the larvae evolve to the juvenile stage
breaking the cysts and falling to the substrate. This
strategy helps the bivalves to overcome the problems
of dispersion in upstream rivers. The South American
unionoids show two basic larval types: the lasidium of
Mycetopodidae, and glochidium of Hyriidae (Mansur
et al., 2012a). Both the larval types are modified
veligers and act as temporary ectoparasites on fish. As
fish parasites, the lasidium triples in size and sends
haustorium that penetrates the host tissues and remove
its nutrients. The larval shell consists of a single
helmet-shaped piece which involves the dorsal part of
a body. This is formed by an anterior tongue-shaped
ciliated lobe or a bilobated one, a central body with
ventral lobes, a bilobated posterior tail with terminal
hooks, and an anterior transparent adhesive organ.
Depending on the species, this can be either stripshaped (genus Monocondylaea Orbigny, 1835),
scourge-shaped (Leila blainvilliana Lea, 1834), or
flower-shaped with a micro hook at one end, as
Anodontites Bruguière, 1792, Mycetopoda Orbigny,
1835 and Acostea rivolii Deshayes, 1827) (Bonetto,
1997). The lasidia of other species and genera of the
family, as Mycetopodella Marshall, 1927, Diplodontites Marshall, 1922, Fossula Lea, 1870, Haasica
Strand, 1932, Bartlettia A. Adams, 1866, and Tamsiella Haas, 1931 are unknown.
The larval body of glochidia is protected by two
valves with an edge on the ventral border, a hook and a
basal callus on the internal side of the ventral edge.
Internally, there is an adhesive flagellum (absent in
Hydrobiologia
Castalia Lamarck, 1819), sensory cilia, cirrus, a
central adductor muscle, a very rudimentary velum,
and phagocytic cells lining inside the valves. With the
flagellum and hooks, the glochidium is enabled to get
attached to the gills, fins, or scales of the fish that
develop a cyst covering the larva. However, there are
exceptions among species of the genus Diplodon Spix
(1827). Hook and adhesive filament are absent on
glochidia of the subgenus Rhipidodonta Morch, 1853.
So the respective species are not fish parasites. Larval
development until the juvenile stage is complete inside
parental marsupium. In general, the glochidia of
Hyriidae does not present spinules at the edges of
the valves and on the base of the hook like other
species of Unionoidea (Unionidae and Margaritiferidae) (Mansur et al., 2012a). Bonetto (1961b) described
glochidia of several species of Diplodon genus. Based
on morphological studies, Pimpão et al. (2012)
reviewed and standardized the terminology of glochidia shells from South American Hyriidae, thus facilitating the differentiation between several species of
Amazonian Basin.
The order Veneroida includes the following families: Corbiculidae, Sphaeriidae, and Dreissenidae.
They are too considered to be good biological
indicators (Lanzer & Schäfer, 1987; Pereira et al.,
2011). The Corbiculidae native genera are represented
by Cyanocyclas Blainville, 1818, and Polymesoda
Rafinesque, 1828 with pallial sinus. The invasive
Corbiculidade are represented by four species of the
genus Corbicula Mergele von Muehlfeld, 1811. The
incubation of larvae is complete in Cyanocyclas until
it reaches an advanced stage inside the marsupium, a
case of euvivipary. The number of embryos is small,
ranging from 25 to 45 per gill, and the release is not
synchronized. Two species of Polymesoda occur in
brackish waters in the Northern part of the continent.
The pallial sinus is absent in the invasive species of
Corbiculidae. Only C. fluminea and C. largillierti have
their larval and life cycles known; their embryos are
incubated in marsupial gills until the end of stage
veliger or pediveliger, and liberated synchronously
(Mansur, 2012; Mansur et al., 2012a, b).
In Sphaeriidae, species of the genera Sphaerium
Scopoli, 1777 and Musculium Link, 1807 show
sequential development of broods into independent
marsupial brood sacs. In Pisidium Pfeiffer, 1821 a
synchronized development in a single marsupial brood
sac occurs (Cooley & Ó Foighil, 2000). An exception
was observed in Pisidium punctiferum (Guppy, 1867)
which form one brood at a time, but with different
sizes of embryos which suggest unsynchronized
release (Anflor & Mansur, 2001). Eupera Bourguignat, 1854 has the most primitive system of reproduction. Embryos have synchronized development, but
there is no brood sac inside the marsupium (Cooley &
Ó Foighil, 2000). The species of this genus produce
delicate byssus threads that facilitate adherence to
pebbles, plants, or floating aquatic vegetation. The
great expansion of its excretory sac may explain its
adaptation and resistance to prolonged periods of
drought. Among Dreissenidae, we only know of the
biology of Mytilopsis lopesi Alvarenga & Ricci, 1989.
In this species, the embryos grow attached to the
mantle in the pallial cavity until the juvenile stage,
with no synchronous release (Mansur et al., 2012a). A.
fluviatilis is known from the Amazon River in Brazil
and Peru (Simone, 1999). It is a nestling bivalve that
lives attached to sandy grains and litter underneath
(Beasley, pers. communication). Simone (1999)
described its morphology for the first time including it
with doubts in Lyonsiidae (Pandoroidea). According to
him, this species has been reported by various authors
also in Corbulidae (Myoida), sharing some similaritie
with Myidae, Hiatelloidea, and Thraciidae as well.
The purpose of this paper is to survey freshwater
bivalve species from South America, to classify and
rank hydrographic regions based on species richness,
composition, and phylogenetic lineages in order to
facilitate the identification of region-specific conservation needs of this highly threatened fauna.
Compilation of species records and analysis
South America, with an area of 17,819.100 km2, represents 12% of the world land area and is home to 6% of the
world population. It has several major river systems such
as the Amazon, Orinoco, Parana, and La Plata River
basins, with a total drainage area of 9,583.000 km2. Both
these systems and other smaller ones show areas of
endemism, diversity hotspots, and unique landscapes.
Data on the occurrence of bivalve species in
hydrographic regions in South America (Fig. 1;
Table 1) were compiled from the scientific literature
and examinations of the following scientific collections: Academy of Natural Sciences of Philadelphia
(ANSP; Philadelphia, USA); Carnegie Museum of
123
Hydrobiologia
Fig. 1 Hydrographic
regions in South American
countries and territory.
Respective codes shown in
Table 1
Natural History (CM; Pittsburgh, USA); Coleção de
Moluscos da Universidade do Estado do Rio do
Janeiro (UERJ; Rio de Janeiro, Brazil); Coleção de
Moluscos da Universidade Federal do Mato Grosso
(UFMT; Cuiabá, Brazil); Fundación Miguel Lillo
(FML; Tucumán, Argentina); Instituto Nacional de
Pesquisas da Amazônia (INPA; Manaus, Brazil);
Musée d’Histoire Naturelle Bâle (MHNB; Basel,
Switzerland); Musée de Zoologie (ZML; Lausanne,
Switzerland); Musée d’Histoire Naturelle de la Ville
de Genève (MHNG; Geneva, Switzerland); Museo
Argentino de Ciencias Naturales’’Bernadino Rivadávia’’ (MACN; Buenos Aires, Argentina); Museo de La
123
Plata (MLP; La Plata, Argentina); Museo Nacional de
Historia Natural de Chile (MNHNC; Santiago, Chile);
Museo Nacional de Historia Natural de Montevideo
(MNHM; Montevideo, Uruguay); Museu de Ciências
e Tecnologia da Pontifı́cia Universidade Católica do
Rio Grande do Sul (MCP; Porto Alegre, Brazil);
Museu de Ciências Naturais Fundação Zoobotânica do
Rio Grande do Sul (MCN; Porto Alegre, Brazil);
Museu de Zoologia da UNISINOS (MZU; São Leopoldo, Brazil); Museu de Zoologia da Universidade de
São Paulo (MZUSP; São Paulo, Brazil); Museu
Nacional da Universidade Federal do Rio de Janeiro
(MNRJ; Rio de Janeiro, Brazil); Museu Paraense
Hydrobiologia
Table 1 Hydrographic regions in South America
Table 1 continued
Countries
Hydrographic regions
Codes
Countries
Hydrographic regions
Argentina (AR)a
Patagonico System
APT
Paraguay (PY)i
Paraguay River
PPG
Endorreico Central System
ACH
Paraná River
PPR
Cuyano Subandino System
Bonaerense
ACY
ABO
Rivers that flow into the Pacific
Ocean
PPA
Paranoplatense System
APP
Andine Lakes
PLA
Misionero System
AMI
Amazon River
PAM
Uruguay River System
AUR
Suriname (SU)k
SUA
Salado del Sur System
ASS
Rivers that flow into the
Atlantic Ocean
Noa System
ANO
Venezuela (VE)l
Rivers that flow into Caribbean
Sea
VCA
Maracaibo Lake
VMA
Brazil (BR)b
Bolivia (BO)c
d
Chile (CH)
Amazonas River
BAM
Tocantins/Araguaia River
BTA
Rivers of the North and
Northeast Atlantic
BAN
São Francisco River
BSF
Rivers of the East Atlantic
BAL
Upper Paraná River
Paraguay River
BAP
BPG
Uruguay River
BUR
Rivers of the south and
southeast Atlantic
BAS
Madeira River
BoMA
Titicaca Lake—endorheic
basins
BoTT
Paraguay River
BoPG
Atlantic exorheic basins
Trans-Andean exorheic basins
CEAT
CET
Andean exorheic basins
CEA
Peru (PE)j
Uruguay (UY)m
Codes
Orinoco River
VOR
Amazon River
VAM
Uruguay River
UUR
Negro River
UNE
La Plata River
ULP
Mirim Lake
UMI
Coastal Lagoons
UCO
The hydrographic regions were delimited and adapted
according to the following sources:
a
IADIZA—Instituto Argentino de Investigaciones de las
Zonas Áridas (www.cricyt.edu.ar/ladyot/lava_carto/mapas/
argentina_cuencas/index.html)
b
ANEEL—Agência Nacional de Energia Elétrica (www.
aneel.gov.br/area.cfm?id_area=104)
c
Mondaca (2011)
d
IGM—Instituto Geografico Militar del Chile (www.igm.cl/)
e
Pre-Andean exorheic basins
CEP
IGAC—Instituto Geográfico Agustı́n Codazzi (www.igac.
gov.co)
Coastal exorheic basins
CEC
f,g,k
Endorheic Basins of Alta Puna
CNE
Endorheic basins of
intermediate elevations
CNCI
h
IGM—Instituto Geográfico Militar del Ecuador (www.igm.
gob.ec)
Rivers that flow into the
Caribbean Sea
Magdalena River
CoCA
i
Orinoco River
CoOR
Rivers that flow into the Pacific
Ocean
CoPA
l
Amazon River
CoAM
Rivers that flow into the
Atlantic Ocean
GUA
m
IA—Instituto de Agrimensura Facultad de Ingenierı́a UdelaR
(www.fing.edu.uy/ia/deptogeom/libro/capitulo8/hidrografia.htm)
French Guiana
(GF)g
Rivers that flow into the
Atlantic Ocean
GFA
Ecuador (EQ)h
Rivers that flow into the Pacific
Ocean
EPA
Amazon River
EAM
Colombia (CO)e
Guyana (GU)
f
Each country is one Hydrographic region considering that
all rivers flow into the Atlantic Ocean
Paraguay Biodiversidad (www.pybio.org/)
j
CoMA
MINEM—Ministerio de Energia Y Minas del Peru (www.
minem.gob.pe/minem/archivos/file/DGAAM/mapas/mapas_
cuencas.htm)
IGVSB—Instituto Geográfico de Venezuela Simon Bolı́var
(www.igvsb.gob.ve/#)
Emilio Goeldi (MPEG; Belém, Brazil); Museum für
Naturkunde (ZMB; Berlin, Germany); Museum
National d’Histoire Naturelle (MNHN; Paris, France);
National Museum of Natural History, Smithsonian
Institution (USNM; Washington D.C., USA); Natural
123
Hydrobiologia
History Museum of United Kingdom (NHMUK;
London, United Kingdom); Naturhistorisches
Museum (NMW; Wien, Austria); Senckenberg Forschungsinstitut und Naturmuseum (SMF; Frankfurt
a.M., Germany); Staatliches Museum für Naturkunde
(SMNS; Stuttgart, Germany); and Zoologische Staatssammlung München (ZSM; Munich, Germany).
Part of the data on the occurrence of species in Peru,
Ecuador, and Colombia were extracted from Mussel
Project (mussel-project.uwsp.edu/). All records of
species (presence or absence) were tabulated for each
country according to the main hydrographic regions.
In order to recognize the phylogenetic composition
of Bivalvia in the main hydrographic regions in South
America (Fig. 1; Table 1), the following phylogenetic
relationships were looked at (Mytilidae ((Hyriidae ? Mycetopodidae) (((Sphaeriidae ? Corbiculidae) Dreissenidae) Anticorbula fluviatilis))))) and
supported by the molecular and morphological analyses according to Walker et al. (2006) and Giribet &
Wheeler (2002).
A pairwise phylogenetic distance matrix (DP) for the
presence or absence of bivalve species in hydrographic
regions included in the dataset was generated using
Mesquite software (available at http://mesquiteproject.
org/mesquite/mesquite.html). Hence, tree branch
lengths were fixed to 1.0, as clade age estimates for
bivalves were not available, and patristic distances
between species were computed. The phylogenetic
composition of each hydrographic regions was addressed using the phylogenetic fuzzy-weighting method
developed by Pillar & Duarte (2010), and implemented
in the software SYNCSA v. 2.5.22 (Debastiani & Pillar,
2012, available at http://www.cran.org). Pairwise phylogenetic distances in DP were transformed into a phylogenetic similarity matrix (SP = 1 - DP). Then,
phylogenetic similarities in SP were used to weigh
species composition in hydrographic regions, using a
fuzzy set algorithm (see Pillar & Duarte, 2010 for
details). This procedure generates a matrix describing
the phylogeny-weighted species composition for each
hydrographic region in South America in the dataset.
That is, the presence of each species i in a given
hydrographic region is shared with each species
j occurring in the array of hydrographic regions, taking
into account the phylogenetic similarity between i and
j. Accordingly, those species j that are more phylogenetically related to i (e.g., from the same genus) will
receive a proportionally higher fraction of the presence
123
of i in those hydrographic regions than more phylogenetically distant species (e.g., from a different family),
which will receive a proportionally lower fraction, and
so on. Note that the sum of species presences (i.e.,
species richness) in each hydrographic region will
remain exactly the same after phylogenetic fuzzyweighting. After defining a multivariate matrix
describing phylogenetic composition of hydrographic
regions, we conducted a principal coordinates analysis
(Gower, 1966; Legendre & Legendre, 1998) on that
matrix to generate principal coordinates of phylogenetic
structure (PCPS) for each hydrographic regions (Duarte,
2011; Duarte et al., 2012). This analysis was conducted
on square-rooted Bray–Curtis dissimilarities between
hydrographic regions. Then, we plotted the two first
PCPS in a scatter plot to evaluate the association
between the hydrographic regions and major bivalve
lineages. PCPS analysis was conducted using the PCO
statistical software (by M. Anderson, available at http://
www.stat.auckland.ac.nz/*mja/Programs.htm). The
Mantel test was used to assess the possible relationship
of the distribution of invasive species with species
richness in hydrographic regions. The test verified the
possible correlation between two arrays: presence and
absence of L. fortunei or Corbicula species (obtained
from Jaccard index) and richness species of freshwater
bivalves (chord distance).
Species richness and distribution
Based on the survey of presence and absence, 168
native limnic bivalves and 5 invasive species were
recorded for the 52 hydrographic regions of 12 South
American countries, and one territory (Table 2).
Hyriidae (36.42%) accounts for the highest percentage of species, followed by Mycetopodidae (27.75%)
and Sphaeriidae (24.86%), Corbiculidae (8.09%), Dreissenidae (1.73%), and Mytilidae and Lyonsiidae
(0.58%). The Unionoida represents 64.18% of the
species richness of freshwater bivalves in South America while Veneroida 35.26% and Mytilioida 0.58%.
The country that has the highest species richness is
Brazil (117 species), followed by Argentina (60),
Venezuela (49), and Uruguay (46) (Table 2). Hydrographic regions with the greatest species richness
(Fig. 2) are in Brazil followed by Argentina and
Uruguay, Venezuela and Peru. In Brazil, the richest
hydrographic regions are in the South and Southeast
Hydrobiologia
Table 2 Freshwater bivalves species of South American countries and territory
Species
South American countries
AR
BR
UY
PY
BO
CH
CO
EQ
PE
GU
SU
GF
VE
Mytiloida
Mytilidae
Limnoperna fortunei (Dunker, 1857)
1
1
1
1
1
0
0
0
0
0
0
0
0
1
Unionoida
Mycetopodidae
Anodontites (Anodontites) aroanus H.B. Baker, 1930
0
0
0
0
0
0
0
0
0
0
0
0
Anodontites (A.) carinatus (Dunker, 1858)
0
0
0
0
0
0
1
1
1
0
0
0
1
Anodontites (A.) colombiensis Marshall, 1922
0
0
0
0
0
0
1
0
0
0
0
0
0
Anodontites (A.) crispatus Bruguière, 1792
0
1
0
0
1
0
1
1
1
1
1
1
1
Anodontites (A.) elongatus (Swainson, 1823)
1
1
1
1
1
0
1
1
1
0
0
0
1
Anodontites (A.) ferrarisii (Orbigny, 1835)
1
1
1
0
0
0
0
0
0
0
0
0
0
Anodontites (A.) guanarensis Marshall, 1927
0
0
0
0
0
0
0
0
0
0
0
0
1
Anodontites (A.) iheringi (Clessin, 1882)
0
1
0
0
0
0
0
0
0
0
0
0
0
Anodontites (A.) infossus H.B. Baker, 1930
0
0
0
0
0
0
0
0
0
0
0
0
1
Anodontites (A.) irisans Marshall, 1926
Anodontites (A.) lucidus (Orbigny, 1835)
0
1
0
1
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
Anodontites (A.) moricandii (Lea, 1860)
0
1
0
0
0
0
0
0
0
0
0
0
0
Anodontites (A.) obtusus (Spix 1827)
0
1
0
0
0
0
0
0
0
0
0
0
0
Anodontites (A.) patagonicus (Lamarck, 1819)
1
1
1
1
0
0
0
0
0
0
0
0
0
Anodontites (A.) puelchanus (Orbigny, 1835)
1
0
0
0
0
0
0
0
0
0
0
0
0
Anodontites (A. pittieri) Marshall, 1922
0
0
0
0
0
0
0
0
0
0
0
0
1
Anodontites (A.) schomburgianus (Sowerby, 1870)
0
1
0
0
0
0
0
0
1
1
0
0
1
Anodontites (A.) soleniformis (Orbigny, 1835)
1
1
0
1
1
0
0
0
1
0
0
0
0
Anodontites (A.) tenebricosus (Lea, 1834)
1
1
1
1
1
0
0
0
1
0
0
0
1
Anodontites (A.) tortilis (Lea, 1852)
0
0
0
0
0
0
1
1
1
0
0
0
1
Anodontites (A.) trapesialis (Lamarck, 1819)
1
1
1
1
1
0
1
1
1
0
0
0
1
Anodontites (A.) trapezeus (Spix, 1827)
1
1
1
1
1
0
0
0
0
0
0
0
1
Anodontites (Lamproscapha) ensiformis (Spix, 1827)
1
1
1
1
1
0
0
1
1
1
0
0
1
Anodontites (L.) falsus (Simpson, 1900)
0
0
0
0
0
0
0
0
0
0
0
0
1
Mycetopoda legumen (Martens, 1888)
Mycetopoda siliquosa (Spix, 1827)
1
1
1
1
0
0
0
0
0
0
0
0
0
1
1
1
1
1
0
1
1
1
0
1
0
1
Mycetopoda soleniformis Orbigny, 1835
1
1
1
1
1
0
1
0
1
0
0
0
1
Mycetopodella falcata (Higgins, 1868)
0
1
0
0
0
0
1
0
1
0
0
0
0
Monocondylaea corrientesensis (Orbigny, 1835)
1
1
1
1
0
0
0
0
0
0
0
0
0
0
Monocondylaea costulata (Moricand, 1858)
0
1
0
0
1
0
0
0
1
0
0
0
Monocondylaea franciscana (Moricand, 1837)
0
1
0
0
0
0
0
0
0
0
0
0
0
Monocondylaea guarayana (Orbigny, 1835)
0
0
0
1
1
0
0
0
0
0
0
0
0
Monocondylaea jaspidea (Hupé, 1857)
0
1
0
0
0
0
0
0
0
1
0
0
1
Monocondylaea minuana (Orbigny, 1835)
1
1
1
0
0
0
0
0
0
0
0
0
0
Monocondylaea paraguayana (Orbigny, 1835)
1
1
1
1
0
0
0
0
0
0
0
0
0
Monocondylaea parchappii (Orbigny, 1835)
1
1
0
0
0
0
0
0
0
0
0
0
0
Fossula fossiculifera (Orbigny, 1835)
1
1
1
1
0
0
0
0
0
0
0
0
0
Tamsiella amazonica Bonetto, 1972
0
1
0
0
1
0
0
0
1
0
0
0
0
123
Hydrobiologia
Table 2 continued
Species
South American countries
AR
BR
UY
PY
BO
CH
CO
EQ
PE
GU
SU
GF
VE
Tamsiella schroeteriana (Lea, 1852)
0
1
0
0
0
0
0
0
1
0
0
0
Tamsiella tamsiana (Dunker, 1858)
0
0
0
0
0
0
1
0
0
0
0
0
0
1
Diplodontites cookei Marshall, 1922
0
0
0
0
0
0
1
1
1
0
0
0
0
Diplodontites olssoni Pilsbry, 1933
0
0
0
0
0
0
1
0
0
0
0
0
0
Diplodontites pilsbryana Olsson & Wurtz, 1951
0
0
0
0
0
0
1
0
0
0
0
0
0
0
Haasica balzani (Ihering, 1893)
0
1
0
0
0
0
0
0
0
0
0
0
Leila blainvilliana (Lea, 1834)
1
1
1
1
0
0
0
0
0
0
0
0
0
Leila esula (Orbigny, 1835)
0
1
0
1
1
0
1
0
1
1
0
0
1
Acostaea rivolii (Deshayes, 1827)
0
0
0
0
0
0
1
0
0
0
0
0
0
Bartlettia stefanensis (Moricand, 1856)
0
1
0
1
1
0
0
1
1
0
0
0
0
Hyriidae
Diplodon (Australis) solidulus (Philippi, 1869)
0
0
0
0
0
1
0
0
0
0
0
0
0
Diplodon (Diplodon) aethiops (Lea, 1860)
0
1
0
0
0
0
0
0
0
0
0
0
0
Diplodon (D.) berthae Ortmann, 1921
Diplodon (D.) besckeanus (Dunker, 1848)
0
0
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Diplodon (D.) caipira (Ihering, 1893)
0
1
0
0
0
0
0
0
0
0
0
0
0
Diplodon (D.) chilensis (Gray, 1828)
1
0
0
0
0
1
0
0
1
0
0
0
0
Diplodon (D.) delodontus (Lamarck, 1819)
1
1
1
1
0
0
0
0
0
0
0
0
0
Diplodon (D.) dunkerianus (Lea, 1856)
0
1
0
0
0
0
0
0
0
0
0
0
0
0
Diplodon (D.) ellipticus Spix, 1827
0
1
0
0
0
0
0
0
0
0
0
0
Diplodon (D.) expansus (Küster, 1856)
0
1
0
1
0
0
0
0
0
0
0
0
0
Diplodon (D.) granosus (Bruguière, 1792)
0
1
0
0
0
0
0
0
0
1
1
1
1
Diplodon (D.) guaranianus (Orbigny, 1835)
0
0
0
1
1
0
0
0
0
0
0
0
0
Diplodon (D.) imitator Ortmann, 1921
0
1
0
0
0
0
0
0
0
0
0
0
0
0
Diplodon (D.) martensi (Ihering, 1893)
0
1
0
1
0
0
0
0
0
0
0
0
Diplodon (D.) multistriatus (Lea, 1831)
0
1
0
0
0
0
0
0
0
0
0
0
0
Diplodon (D.) obsolescens Baker, 1913
0
1
0
0
0
0
0
0
0
1
0
0
1
Diplodon (D.) parallelopipedon (Lea, 1834)
1
1
1
1
1
0
0
0
0
0
0
0
0
Diplodon (D.) parodizi Bonetto, 1960
1
1
0
1
0
0
0
0
0
0
0
0
0
Diplodon (D.) paulista (Ihering, 1893)
Diplodon (D.) piceus (Lea, 1860)
0
0
1
1
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Diplodon (D.) rhombeus Spix, 1827
0
1
0
0
0
0
0
0
0
0
0
0
0
Diplodon (D.) rhuacoicus (Orbigny, 1835)
1
1
1
0
0
0
0
0
0
0
0
0
0
Diplodon (D.) suavidicus (Lea, 1856)
0
1
0
0
0
0
1
0
0
1
0
0
1
Diplodon (D.) vicarius Ortmann, 1821
0
1
0
0
0
0
0
0
0
0
0
0
0
Diplodon (D.) wymanii (Lea, 1860)
1
1
1
0
0
0
0
0
0
0
0
0
0
0
Diplodon (Rhipidodonta) burroughianus (Lea, 1834)
1
1
1
0
0
0
0
0
0
0
0
0
Diplodon (R.) charruanus (Orbigny, 1835)
1
1
1
0
0
0
0
0
0
0
0
0
0
Diplodon (R.) deceptus Simpson, 1914 sensu
Ortmann, 1921
0
1
0
0
0
0
0
0
0
0
0
0
0
Diplodon (R.) funebralis (Lea, 1860)
0
1
1
0
0
0
0
0
0
0
0
0
0
Diplodon (R.) koseritzi (Clessin, 1888)
Diplodon (R.) hildae Ortmann, 1921
0
0
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Diplodon (R.) hylaeus (Orbigny, 1835)
1
1
1
0
1
0
0
1
1
0
0
0
0
123
Hydrobiologia
Table 2 continued
Species
South American countries
AR
BR
UY
PY
BO
CH
CO
EQ
PE
GU
SU
GF
VE
Diplodon (R.) iheringi Simpson, 1914
0
1
0
0
0
0
0
0
0
0
0
0
0
Diplodon (R.) peraeformis (Lea, 1860)
1
0
1
0
0
0
0
0
0
0
0
0
0
Diplodon (R.) variabilis (Maton, 1811)
1
0
1
0
0
0
0
0
0
0
0
0
0
Diplodon fontainianus (Orbigny, 1835)
0
1
0
0
0
0
0
0
0
0
0
0
0
Diplodon greeffeanus (Ihering, 1893)
0
1
0
0
0
0
0
0
0
0
0
0
0
0
Diplodon paranensis (Lea, 1834)
1
1
1
1
0
0
0
0
0
0
0
0
Diplodon pfeifferi (Dunker, 1848)
0
1
0
0
0
0
0
0
0
0
0
0
0
Diplodon rotundus Spix, 1827
0
1
0
0
0
0
0
0
0
0
0
0
0
0
Diplodon solisianus (Orbigny, 1835)
0
0
1
0
0
0
0
0
0
0
0
0
Diplodon uruguayensis (Lea, 1860)
0
1
1
0
0
0
0
0
0
0
0
0
0
Diplodon voltzi Vernhout, 1914
0
0
0
0
0
0
0
0
0
0
1
1
1
Castalia ambigua Lamarck, 1819
0
1
0
0
1
0
1
1
1
1
1
0
1
Castalia cordata Swainson, 1840
0
1
0
0
0
0
0
0
0
0
0
0
0
Castalia crosseana Hidalgo, 1865
Castalia duprei (Récluz, 1842)
0
0
0
1
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
Castalia ecarinata Mousson, 1869
0
0
0
0
0
0
1
1
0
0
0
0
Castalia inflata Orbigny, 1835
1
1
1
1
1
0
0
0
0
0
0
0
0
Castalia martensi (Ihering, 1891)
0
1
1
0
0
0
0
0
0
0
0
0
0
Castalia multisulcata Hupé, 1857
0
0
0
0
0
0
1
0
0
0
0
0
1
Castalia nehringi (Ihering, 1893)
0
1
0
1
0
0
0
0
0
0
0
0
0
Castalia orbignyi (Deville & Hupé, 1850)
0
1
0
0
0
0
0
0
0
0
0
0
0
Castalia orinocensis Morrison, 1943
0
0
0
0
0
0
1
0
0
0
0
0
1
Castalia psammoica (Orbigny, 1835)
1
1
1
1
0
0
0
0
0
0
0
0
0
Castalia quadrata (Sowerby, 1869)
0
1
0
0
0
0
0
0
0
1
0
0
1
Castalia schombergiana Sowerby, 1869
0
1
0
0
0
0
0
0
0
0
0
0
1
Castalia stevensi (Baker, 1930)
0
0
0
0
0
0
1
0
0
1
0
0
1
1
Castalia sulcata (Krauss, 1849)
0
1
0
0
0
0
0
0
0
1
1
1
Castalia undosa Martens, 1885
0
1
0
0
0
0
0
0
0
0
0
0
0
Paxyodon syrmathophorus (Meuschen, 1781)
0
1
0
0
1
0
1
0
1
1
0
0
1
Prisodon obliquus Schumacher, 1817
Triplodon corrugatus (Lamarck, 1819)
0
0
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
0
0
0
0
0
1
1
Triplodon chodo Mansur & Pimpão, 2008
0
1
0
0
0
0
0
0
0
0
0
0
0
Veneroida
Dreissenidae
Mytilopsis lopesi Alvarenga & Ricci, 1989
0
1
0
0
0
0
0
0
0
0
0
0
0
Mytilopsis trautwineana (Tryon, 1866)
0
0
0
0
0
0
1
1
0
0
0
0
0
Congeria hoeblichi Schütt, 1991
0
0
0
0
0
0
1
0
0
1
0
0
1
Cyanocyclas amazonica (Prime, 1870)
0
1
0
0
0
0
0
0
0
0
0
0
0
Cyanocyclas bavayi (Ancey, 1880)
0
0
0
0
0
0
0
0
0
0
0
1
1
Cyanocyclas brasiliana (Deshayes, 1854)
0
1
0
0
0
0
0
0
0
0
0
0
0
Cyanocyclas cuneata (Jonas, 1844)
0
0
0
0
0
0
0
0
0
0
0
0
1
Cyanocyclas limosa (Maton,1811)
1
1
1
0
0
0
0
0
0
0
0
0
0
Corbiculidae
123
Hydrobiologia
Table 2 continued
Species
South American countries
AR
BR
UY
PY
BO
CH
CO
EQ
PE
GU
SU
GF
VE
Cyanocyclas paranaensis (Orbigny, 1835)
1
1
1
1
0
0
0
0
0
0
0
0
0
Cyanocyclas rotunda (Prime, 1860)
0
0
0
0
0
0
0
0
0
1
1
0
1
Cyanocyclas surinamica (Clessin, 1879)
0
0
0
0
0
0
0
0
0
0
1
0
1
Corbicula fluminalis (Müller, 1774)
0
1
0
0
0
0
0
0
0
0
0
0
1
Corbicula fluminea (Müller, 1774)
1
1
1
0
0
0
1
0
1
0
0
0
1
Corbicula largillierti (Philippi, 1844)
1
1
1
0
0
0
0
0
0
0
0
0
0
Corbicula sp.
0
1
0
0
0
0
0
0
0
0
0
0
0
Polymesoda solida (Phillipi, 1846)
0
1
0
0
0
0
1
0
0
0
0
0
1
Polymesoda aequilatera (Deshayes, 1854)
0
1
0
0
0
0
0
0
0
1
1
1
1
0
Sphaeriidae
Byssanodonta paranensis Orbigny, 1846
1
1
0
0
0
0
0
0
0
0
0
0
Eupera bahiensis (Spix, 1827)
0
1
0
0
0
0
0
0
0
0
0
0
1
Eupera doellojuradoi Klappenbach, 1962
1
1
1
0
0
0
0
0
0
0
0
0
0
Eupera elliptica Ituarte & Dreher-Mansur, 1993
Eupera guaraniana Ituarte, 1994
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Eupera iguazuensis Ituarte, 1989
1
1
0
0
0
0
0
0
0
0
0
0
0
Eupera klappenbachi Mansur & Veitenheimer, 1975
0
1
1
0
0
0
0
0
0
0
0
0
0
Eupera modioliforme (Anton, 1837)
0
0
0
0
0
0
0
0
0
0
0
0
1
Eupera platensis Doello-Jurado, 1921
1
1
1
1
0
0
0
0
0
0
0
0
0
Eupera primei Klappenbach, 1967
0
0
0
0
0
0
0
0
1
0
0
0
0
Eupera simoni (Jousseaume, 1889)
0
1
0
0
0
0
0
0
1
0
0
0
1
Eupera tumida (Clessin, 1879)
0
1
0
0
0
0
0
0
0
0
0
0
1
Musculium argentinum (Orbigny, 1835)
1
1
1
0
0
1
0
0
0
0
0
0
0
Musculium patagonicum Pilsbry, 1911
1
0
0
0
0
1
0
0
0
0
0
0
0
1
Pisidium bejumae Baker, 1930
0
1
0
0
0
0
0
0
0
0
0
0
Pisidium boliviense Sturany, 1900
0
1
0
0
0
0
0
1
1
0
0
0
0
Pisidium chicha Ituarte, 2005
1
0
0
0
0
0
0
0
0
0
0
0
0
Pisidium chilense (Orbigny, 1846)
0
0
0
0
0
1
0
0
0
0
0
0
0
Pisidium chiquitanum Ituarte, 2001
1
0
0
0
1
0
0
0
0
0
0
0
0
Pisidium dorbignyi Clessin, 1879
Pisidium forense Meier-Brook, 1967
0
0
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Pisidium globulus Clessin, 1888
0
1
0
0
0
0
0
0
0
0
0
0
0
Pisidium huillichum Ituarte, 1999
1
0
0
0
0
1
0
0
0
0
0
0
0
Pisidium inacayali Ituarte, 1996
1
0
0
0
0
0
0
0
0
0
0
0
0
Pisidium iquito Ituarte, 2004
0
0
0
0
0
0
0
0
1
0
0
0
0
Pisidium lebruni Mabille, 1884
1
0
0
0
0
1
0
0
0
0
0
0
0
Pisidium llanquihuense Ituarte, 1999
0
0
0
0
0
1
0
0
0
0
0
0
0
Pisidium magellanicum (Dall, 1908)
1
0
0
0
0
1
0
0
0
0
0
0
0
Pisidium meierbrooki Kuiper & Hinz, 1984
0
0
0
0
1
1
0
0
1
0
0
0
0
Pisidium ocloya Ituarte, 2005
1
0
0
0
0
0
0
0
0
0
0
0
0
Pisidium omaguaca Ituarte, 2005
1
0
0
0
0
0
0
0
0
0
0
0
0
Pisidium patagonicum Pilsbry, 1911
1
0
0
0
0
0
0
0
0
0
0
0
0
Pisidium pipoense Ituarte, 2000
1
0
0
0
0
0
0
0
0
0
0
0
0
123
Hydrobiologia
Table 2 continued
Species
South American countries
AR
BR
UY
PY
BO
CH
CO
EQ
PE
GU
SU
GF
VE
Pisidium plenilunium (Melvill & Standen, 1907)
1
0
0
0
0
0
0
0
0
0
0
0
Pisidium punctiferum (Guppy, 1867)
0
1
0
0
0
0
0
0
0
0
0
0
0
1
Pisidium sterkianum Pilsbry, 1897
1
1
1
1
1
0
0
0
0
0
0
0
0
Pisidium taraguyense Ituarte, 2000
1
1
1
0
0
0
0
0
0
0
0
0
0
Pisidium vile Pilsbry, 1897
1
1
1
1
1
0
0
0
0
0
0
0
0
Sphaerium aequatoriale Clessin, 1879
0
0
0
0
0
0
0
1
0
0
0
0
0
Sphaerium cambaraense Mansur et al., 2008
0
1
0
0
0
0
0
0
0
0
0
0
0
Sphaerium forbesi (Philippi, 1869)
0
0
0
0
1
1
1
0
1
0
0
0
0
Sphaerium lauricochae (Philippi, 1869)
0
0
0
0
0
1
0
0
1
0
0
0
0
Sphaerium titicacense (Pilsbry, 1924)
0
0
0
0
1
0
0
0
1
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
60
117
46
31
27
12
29
18
33
17
9
6
49
Myoida (?)
Lyonsiidae (?)
Anticorbula fluviatilis (Adams, 1860)
Species richness (S)
Atlantic, Uruguay, Paraguay, and Amazon Rivers
([40 species). In Uruguay, the continuation of the
Uruguay River basin presents the greatest wealth,
followed by the basin of the La Plata River. In
Argentina, the Uruguay River and the rivers of
Paranoplatense System are the richest in species.
Further North of this continent, the Orinoco River in
Venezuela and Amazon River, in Peru are quite
relevant. In rivers, generally there is a greater species
richness in the middle and lower zones (Mansur &
Pereira, 2006; Pereira et al., 2011), where the primary
production is higher. Moreover, in these areas, a
floodplain with oxbow lakes containing many species
of bivalves (Colle & Callil, 2012) is very common.
Very low richness is probably related to small Pacific
drainages, to arid domains from the Andes, to the
semiarid at Brazilian Northeast Atlantic or salty
endorheic systems in Argentina (Fig. 2).
Only 43 native species occur in more than 10% of
the hydrographic regions inventoried, while the other
species occur in only 5 of 131 hydrographic regions
inventoried (\10%) (Fig. 3). It means that there is an
expressive and large zone of endemisms forming
mosaics with different richness levels and taxocenosis
compositions. Anodontites (A). trapesialis (Lamarck,
1819) and C. fluminea are widely distributed in South
American hydrographic regions. The respective frequency of occurrence figures for these species in the
basins analyzed are 59.6 and 53.8%. The following
species should also be mentioned: M. siliquosa (Spix,
1827) (44.2%); Anodontites (A). elongatus (Swainson,
1823); Anodontites (A). trapezeus (Spix, 1827) and C.
largillierti (32.7%); Anodontites (A). patagonicus
(Lamarck, 1819) (28.8%); Anodontites (L). ensiformes
(Spix, 1827) (26.9%); L. fortunei (25.7%); Anodontites (A). crispatus Bruguière, 1792; Anodontites (A).
tenebricosus (Lea, 1834) and Pisidium sterkianum
Pilsbry, 1897 (25.0%); M. soleniformis and Castalia
ambigua Lamarck, 1819 (21.1%).
A. trapesialis is widely spread in hydrographic
regions of the South America, occurring in sandy/
muddy or muddy-only sediment, with deposits of silt
and clay, in regions of lower water velocity as side
channels or in marginal lakes, where it finds food
(phytoplankton) in abundance (Bonetto & Di Persia,
1975; Hebling, 1976; Simone, 1994; Pereira et al.,
2011; Colle & Callil, 2012). The species had dispersed
further due to fish farming. The lasidia of this species
appear not to show specificity with hosts (Callil et al.,
2012), facilitating the dispersion in the fish farms,
causing damage on fish production (Guardia-Felipi &
Silva-Souza, 2008). C. fluminea, which has been
reported in South America since the 70s has invaded
all the large basins of the continent from Colombia to
the North of Patagonia where it became quickly
dominant (Santos et al., 2012). M. siliquosa is not
abundant but present in most of the South American
basins living in small aggregate populations that prefer
123
Hydrobiologia
Fig. 2 Species richness
(S) zonation of freshwater
bivalves in the hydrographic
regions in South America
compacted substrate of marginal areas. A. (A). elongatus is present in many basins from the North at the
Magdalena, Orinoco, and Amazon basins to the South
in the Uruguay River. It usually occurs together with A.
(A). trapesialis and Castalia spp. sharing the same
habitat in areas of marginal lakes and side channels,
especially in the region of the Pantanal on the upper
Paraguay River (Colle & Callil, 2012). A. (A). trapezeus is very common in the basins of the Eastern and
Southern Atlantic, Paraná, Paraguay, and Uruguay,
and is rare in Tocantins, Amazonas, and Orinoco.
The distribution of two Corbicula species does show
no significant (P \ 0.01) correlation with species
123
richness in the different hydrographic regions in South
America: C. fluminea (r = 0.11; P = 0.012) and C.
fluminalis (r = 0.07; P = 0.31). However, C. largillierti demonstrates significant and poor positive correlation (r = 0.32; P = 0.0001) with species richness. C.
largillierti was the first species of the genus to invade
South America through the La Plata River. Subsequently, C. largillierti decreased in density and distribution after the arrival of another invasive species, C.
fluminea. A.(A). patagonicus is very common in the
Southern American hydrographic regions as Paraná,
Uruguay, and South Atlantic River basins. A. (L.)
ensiformis is common in the middle Paraná in Argentina,
Hydrobiologia
Fig. 3 Occurence frequency (N and %) of freshwater bivalves
in hydrographic regions of South America
in Paraguay River of Brazil and Paraguay and in a small
part of middle Uruguay River bordering Argentina and
Brazil. Northwards, it is observed in the Madeira River in
Bolivia, in the Amazon, Tocantins, and Orinoco basins.
Like M. siliquosa, it lives in small populations on muddy
river margins.
The distribution of L. fortunei does show no
significant correlation (r = 0.02; P = 0.69) with species richness in different hydrographic regions in South
America. After the first record of L. fortunei in the La
Plata River near Buenos Aires, the species was rapidly
dispersed with the help of the boats that flow through
waterways of the Uruguay, Paraná, and Paraguay rivers
invading Argentina, Brazil, Uruguay, Paraguay, and
Bolivia. So far it has not been reported in the Amazon
River Basin despite the proximity. It has been recorded
in the upper Paraná River, downstream of the dam of
St. Simon at Paranaiba River, bordering the state of
Goiás, Brazil. This region is very close to the
headwaters of the Tocantins River which flows in the
delta of the Amazon River (Santos et al., 2012).
A. (A). crispatus is more frequent in the basins of the
Northern part of the continent, and the upper tributaries
of the Paraguay river. A. (A). tenebricosus is very
common on the lower part of the Uruguay river, where it
appears in a very robust form. It also occurs in the south
Atlantic drainage of Brazil but at a lower extent, and in
the basins of Plata and Paraná becoming more scarce to
the north. The record of this species for the Orinoco must
be revised because it may have been confused with the
related species A. (A). crispatus or A. elongatus.
Pisidium sterkianum is often present and abundant
in sandy bottoms of lakes and lower parts of the rivers
of Paraguay, Paraná, upper Paraná in Brazil, and
Uruguay basins. It has also been reported for the
Amazon Basin in Brazil and Bolivia.
Mycetopoda soleniformis just like the other species
of this genus, lives in clusters forming small populations. It is most frequently found in the basin of the
Paraná River, and much less common in the Uruguay
River. As for the Amazonas River, there are records for
Peru, Bolivia near the Madeira River, and in the state of
Acre in Brazil. C. ambigua is common in large parts of
the Orinoco and the Amazon Rivers even along the
Andes in Peru and Ecuador, and has been reported for
the Pacific basin in Ecuador. It occurs also in the rivers
123
Hydrobiologia
of Suriname and Guyana. The citations of C. ambigua to
La Plata, Paraná and Paraguay rivers, and the lower
reach of the Uruguay River must be carefully studied
with the support of genetics considering the similarities
to Castalia inflata Orbigny, 1835 which predominates in
these Southern hydrographic regions. It is possible that
both species could be considered as synonyms.
Endemisms can be easily observed in some species
that live on stones in running waters like: A. rivolii
(Magdalena River at Colombia), Bartlettia stefanensis
(Moricand, 1856) (High Amazon and Paraguay rivers), Byssanodonta (Ihering, 1893) (Middle Paraná
River), and M. lopesi (lower part of Amazon and
Tocantins rivers). Triplodon, Paxyodon Schumacher,
1817 and Prisodon Schumacher, 1817 only appear in
the Amazon and Orinoco rivers. H. balzani lives in
very restricted areas of the Paraguay River that present
calcareous water. Endemisms are even more evident
among Sphaeriidae. Eupera iguazuensis Ituarte, 1989
is restricted to Iguazú falls (area bordering Brazil and
Argentina) and Pisidium pipoensis Ituarte, 2000 found
only in the region of Missiones (Argentina). In the
region of Patagonia in Argentina and Chile, there are
many proper species of Pisidium and at Lake Titicaca
(area bordering between Peru and Bolivia) some
endemic species of Sphaerium can be found.
Regarding Dreissenidae, the native M. lopesi, from
the lower part of the Amazon River and Tocantins/
Araguaia Rivers is adapted to freshwater forming small
and low clusters on submerged rocks (Alvarenga &
Ricci, 1989). Embryos and larvae develop outside the
gills, inside the pallial cavity, fixed to the mantle of
parental individuals, and are released as they are young
(Mansur, 2012). They differ considerably from estuarine dreissenids as Mytilopsis sallei (Recluz, 1849) and
Mytilopsis leucophaeata (Conrad, 1831) with planktotrophic larvae. Both species are from North America:
the former was detected in Venezuela and the latter has
been most recently collected in the mangroves of Recife
(Souza et al., 2005). A. fluviatilis is an endemic species
of Amazonas River occurring from Peru to river mouth
on the main channel (Simone, 1999, 2006).
Phylogenetic composition and origin
of the hydrographic regions
The principal coordinate’s analysis for phylogenyweighted species composition generated 51 PCPS.
123
The first two PCPS contained, respectively, 53.6 and
33.8% of the total variation in the phylogenetic
composition matrix. The ordination scatter plot
(Fig. 4) shows that the first PCPS was positively
related to hydrographic regions characterized by the
predominant occurrence of Veneroida ? A. fluviatilis,
and negatively related to predominant occurrence of
Mycetopodidae and Hyriidae. On the other hand, the
second PCPS split hydrographic regions characterized
by predominant occurrence of Hyriidae (positive
values) and Mycetopodidae (negative values).
The Veneroida had higher species richness in the
hydrographic regions located in the Andes Mountains
on the far Southwest, and coastal areas of the continent.
This order is represented basically by several species of
Pisidium genus concentrated mainly in Andean area.
These are cooler regions, where rivers are born in
mountainous areas. These are very similar environments
to the frozen rivers of the Paleartic Region, where many
species of Pisidium are sympatric. However, the species
of Pisidium are rarely sympatric in South America and
show a great variation within populations (Kuiper,
1983). In streams and lakes of the Andean highlands,
they are more numerous and concentrated (Kuiper &
Hinz, 1984; Ituarte, 2007). Species of Sphaerium, are
practically only present in the Andean highlands. An
exception is Sphaerium cambaraense Mansur et al.,
2008, which occurs in the highlands (above 800 m) in
Southern Brazil at the Araucaria angustifolia forest
(Mansur et al., 2008). Fitkau (1981) mentioned that the
Amazon does not have habitats suitable for the occurrence of Sphaeriidae except for E. simoni, which is
adapted to the fluctuations of the water level and long
drought periods. In the coastal environment of Northern
Brazil and Venezuela, species of Cyanocyclas and
Polymesoda genus are predominant.
Parodiz & Bonetto (1963) presented distribution
maps of Hyriidae and Mycetopodiade in South
America which coincide with the distribution of
species observed in this study. Some species of
Hyriidae and Mycetopodidae have also been reported
in rivers located in mountainous areas which are not so
elevated like Andes area. D. chilensis is the only
species of Unionoida inhabiting Andine Rivers and
lakes in the Patagonian region found in Chile,
Argentina, and Peru. This is the most frequent species
in lakes near the cities of Temuco, Valdivia, and
Puerto Montt at Chile (Parada & Peredo, 2002; Parada
et al., 2007).
Hydrobiologia
Fig. 4 Principal coordinates analysis of phylogenetic structure (PCPS) for each hydrographic regions of South America. A Ordination
scatter plot. B Phylogenetic structure of hydrographic regions. Arrow indicates very high richness. Hyriidae (h) and Mycetopodidae (m)
A. (A). tenebricosus, B. stefanensis, and A. rivoli are
typical waterfall species. However, the highest richness of Mycetopodidae and Hyriidae is to be found in
lowland rivers, oxbow lakes, lakes, and costal lakes.
Very inflated species, such as Castalia inflata, float
over the mud of river margins and lakes. The
elongated forms like Mycetopoda, Mycetopodella
falcata (Higgins, 1868), A. (L). ensiformis bury
themselves in the compacted substrate of wet river
banks.
To understand the patterns of distribution of
species, it is necessary to know the geological events
that gave rise to the current configuration of the
landscape and hydrographic regions in South America. According to Leal (2011), during the breakup of
the Gondwana Paleocontinent in the Mesozoic (Cretaceous period, *100 Ma), the main drainage of the
South American plate was directed to the West. This
pattern changed due to geotectonic episodes like:
separation of South America from Africa with the
opening of the South Atlantic Ocean, the Andean
uplift, and the closure of the Panamanian Isthmus.
Since the upper Mesozoic era (83–67 Ma), three
separate large river basins were present, two located at
the current Amazon River Basin (one part which
flowed East and another West), and another drainage
which flowed South and originated the Paraná–Paraguay river system.
According to Hubert & Renno (2006), successive
geological events determined the genesis of the
current South American basins in the Cenozoic era
(Tertiary period) as follows: (1) 15 and 10 Ma: the last
event of great marine incursion, before the final
establishment of the Amazon, previously dated
between and was postulated to lead to a 150-m marine
highstand forming a big sea called Pebas. At least one
continental sea, the Paranean Sea between Southern
Brazil and Northern Argentina, was formed. The
Magdalena basin was isolated after the uplift of the
Northwestern Andes changing the direction of river
flow to the west; (2) 10 and 8 Ma: marine regressions
and Andean foreland dynamics are associated with the
123
Hydrobiologia
final establishment of the Amazon basin. The Paraná–
Paraguay split from the protoAmazon at 10 Ma; (3) 8
and 5 Ma: separation of the Orinoco occurred on the
Vaupes arch. The modern course of Amazon River
appeared with the final uplift of the central Andean
cordillera related to the rise of the Purus arch. The
Maracaibo Lake was formed after the final uplift of the
Northwestern Andes. The Upper Amazon was isolated
from the remainders of the Orinoco and Paraná rivers;
and (4) 4 Ma: after marine regressions and Andean
dynamics, the Upper Amazon was fragmented. The
formation of the Pebas sea got several rivers isolated
and consequently got their populations of freshwater
bivalves isolated, too. According to Wesselingh
(2006), the Western Amazonian became a mosaic of
lakes, swamps, and meander belts splitting the mains
river in different subsystems. According to Wares &
Turner (2003), the freshwater habitats are typically
connected in a hierarchical, fractal geometric fashion
with low-order streams draining into larger streams
and rivers. This physical configuration offers a great
diversity of habitats for freshwater clams. The compartmentation of hydrographic regions in South
American basins promoted different ways to diversification of both invertebrate and vertebrate fauna like
fishes, and this fact is closely associated with hydrogeological history of the continent (Hubert & Renno,
2006). According to the same authors, ‘‘the patchy
nature of freshwater habitats, may in some respects
account for the high species diversity encountered
there considering that opportunity for geographic
isolation (and presumably alopatric speciation) is
greater than in marine habitats’’. For million years in
the Mioceno, there was also probably sufficient time
for diversification of freshwater bivalves. By virtue of
the formation of Pebas, the Andean uplift and erosion
changed the fluvial landscapes of South America again
resulting in more intensive diversification of freshwater bivalves. Events similar to the formation of Pebas
occured in the Southern part of the continent in the
Paraná–Paraguay with formation of Paranean Sea.
Events like these probably promoted the fauna diversification in water courses as Rivers of the South and
Southeast Atlantic, and coastal lakes. Lanzer (2001)
verified that the distribution of freshwater clams in
lake systems of the coast of Rio Grande do Sul, in
Southern Brazil, is related to the genesis of those
systems that resulted from the processes of marine
transgressions and regressions.
123
In addition to the geological events, other factors
are important for the distribution of bivalves. Freshwater clams cited for South America can also be
scattered across the stomach contents of fish, but are
limited to the distribution areas of these vectors. They
can also be transported over long distances by birds,
crossing geographical barriers. These birds eat large
bivalves, but normally they break the shell eating only
the soft part. However, smaller bivalves can remain
unscattered through the gut, mainly Corbiculidae, and
Mytilidade, or transported fixed on feathers, mainly
Corbiculidae and Sphaeriidae.
Knowledge gaps
The lack of basic knowledge on freshwater clams is a
reality that hinders the categorization of species
conservation status in South America. This paucity
is in part due to the lack of organized and representative collections of the freshwater bivalves species of
the main hydrographic regions in South America,
difficulties in obtaining type material or respective
good illustrations, lack of identification keys and
publications on the reproduction, ecology, morphology, and on the affinity of the species with the host fish
of gloquidia and lasidia, besides the scarcity of
limnological institutions or biological stations dealing
with mussels. Many hydrographic regions are underrepresented in scientific collections, especially those
located in the Northern part of the continent.
By comparing the study of freshwater bivalves in
South America with the one developed in other
continents, especially Europe and North America,
we can see that in the period of the early naturalists
(Haag, 2012), the difficulties encountered there, such
as the scarcity of morphological data and the lack of
sampling locality of the species, were similar to ours.
But in South America, we have aggravating circumstances that type material and additional collections
were donated or sold to museums in Europe or North
America. In the subsequent periods, the first museums
and scientific collections were formed in the countries
of the Northern hemisphere. At that time, studies on
mussels compared morphologies, ecology, and phylogeny saw a period of major development (Haag,
2012). In South America, the studies leave something
to be desired by the lack of comparative material, and
again, important collections as the one from Ihering
Hydrobiologia
were still sold to Europe. Ortmann (1921), who started
and strongly encouraged malacology and mussel
ecology in North America (Haag, 2012), did not
collect in our watersheds. He described relatively few
species from some basins, mainly those mussels
collected by his colleague Ichthyologist J. D. Hasemann, with their testimonies reported at the Carnegie
Museum, Pittsburgh, again outside South America.
In recent decades, genetic studies have shed light on
the phylogenetic and evolutionary relationships inside
Unionoida. However, the presence of unionoidean
doubly uniparental inheritance of mtDNA (DUI) make
evolutionary interpretations difficult mainly by the
South American Hyriidae that are scarcely evaluated.
Genetic studies are also necessary in order to differentiate similar or cryptic species of Mycetopodidae as,
Anodontites (A.) iheringi (Clessin, 1882), and Anodontites ferrarisii (Orbigny, 1835); A. tenebricosus and
A. soleniformis; and of Hyriidae as, D. granosus and D.
multistriatus; C. ambigua, and C. inflata. Many species
are morphologically unknown and rare in scientific
collections like, Anodontites (A.) aroanus Baker, 1930;
Anodontites (A.) carinatus (Dunker, 1858); Anodontites
(A.) colombienses Marshall, 1922; Anodontites (A.)
guanarensis Marshall, 1927; Anodontites (A.) puelchanus Orbigny, 1835; Monocondylaea costulata (Moricand, 1858); Monocondylaea franciscana (Moricand,
1837); Monocondylaea guarayana (Orbigny, 1835);
Tamsiella amazonica Bonetto, 1972 and, Tamsiella
schroeteriana (Lea, 1852). It would be necessary to
conduct new expeditions in the type localities in order to
obtain topotypes to support the redescription of these
species.
Many species of Diplodon genus cited for the
basins of the Eastern Atlantic, Upper Paraná River,
and North and Northeast Atlantic are hardly differentiated. Until now, the diagnostic criteria are not well
established, thus requiring adequate morphological
studies for the recognition of their taxonomic status:
Diplodon (D.) caipira (Ihering, 1893); Diplodon (D.)
expansus (Kuester, 1856); Diplodon (D.) ellipticus
(Spix, 1827); Diplodon (R.) funebralis (Lea, 1860);
Diplodon (D.) multistriatus (Lea, 1831); Diplodon
(D.) granosus (Bruguière, 1792); Diplodon (D.)
paulista (Ihering, 1893), and Diplodon (D.) rhombeus
(Spix, 1827). In addition, Diplodon (D.) imitator
Ortmann, 1921 was described from the Jacuı́ River in
the South Atlantic Basin; however, it has not been
found ever since. Some species of genus Diplodon
were not yet framed within subgenera due to lack of
knowledge of glochidia morphology (Table 2).
The species, C. ambigua, C. inflata, Castalia
quadrata Sowerby, 1869, Castalia schombergiana
Sowerby, 1869 and Castalia sulcata (Krauss, 1849)
show a wide morphological variation, with a particular
shape of the shell for each different basin, which also
hampers the recognition of these species by nonspecialists. The internal anatomy is unknown for the
most part of the species and the glochidium is not a
good intraspecific character in this genus.
Prisodon obliquus Schumacher, 1817 and Paxyodon
syrmatophorus (Gmelin, 1791) are very similar species
with winged hinge, no umbonal sculpture and the same
color and periostracum brightness. The upper Amazon
River sees a predominance of P. obliquus, whereas in
the low Amazon River, P. syrmatophorus prevails.
However, intermediate forms occur in sympatry in some
parts of the lower Amazon River. Therefore, questions
remain to be answered about the identity of both species,
raising suspicions of the existence of only one species
with a wide morphological variation along the basin.
Pimpão et al. (2012) observed that the glochidia of both
species are also very similar.
All species of the genus Cyanocyclas should be
reviewed. Mainly species of northern part of the continent
and C. limosa, which shows a wide morphological
variation and may represent a large number of species.
Considering Sphaeriidae in the Southern hemisphere, Kuiper (1983) emphasizes the fact that the
paucity of species with conspicuous interpopulational
variation in the same environment is regarded as a
rule. This morphological variation makes difficult the
definition of diagnostic criteria and consequently the
species recognition. The species of the Pisidium genus
cited for Argentina, Bolivia, Chile, Peru, and Uruguay
were reviewed by Ituarte (2007), and all other
hydrographic regions in South America require similar
revisions and more collections.
Considering the abovementioned amount of gaps of
knowledge, we can recognise that D. chilensis is one
exception and probably the best known species of
Hyriidae in the continent.
Risks for the biodiversity of freshwater bivalves
The main threats to the conservation of freshwater
bivalves are related to habitat destruction, water
123
Hydrobiologia
pollution, and the invasion of exotic bivalves (Mansur
et al., 2003a; Machado et al., 2008; Pereira et al.,
2012). Among the causes of habitat destruction, we
can highlight the deforestation of riparian vegetation,
damming and channeling rivers, wetland drainage,
siltation of rivers and lakes, sand mining, etc. The
bivalves are filter feeders that have little or no mobility
in adulthood. As a consequence, they are very
sensitive to changes in river flow, sediment grain size,
water level, slope and shading on the margins. The
destruction of the terrestrial environments entails
drastic consequences to hydrographic regions. Until
today, the practice of burning forests and savannah
environments are common in many South American
countries and territories despite the restrictions
imposed by environmental agencies sponsored by
the government. This practice disrupts the soil,
facilitating erosion and siltation. Thus, all processes
that modify and destroy the vegetation cover also have
a negative impact on hydrographic regions, affecting
the assemblage of bivalves.
Miyahira et al. (2012a, b) made some comments on
the habitat degradation and their effects on freshwater
mussels in the state of Rio de Janeiro. Water pollution
is an important factor in the population decline of
native bivalves. The high organic contamination
decreases the oxygen dissolved in the water, keeping
these mollusk from surviving. Contamination from
industrial effluents and solid waste generates metals
that are incorporated by the bivalves and accumulated
in the food chain. The agricultural activity also
impacts on this fauna which is poisoned by pesticides.
In South America, the main source of energy is
provided by hydroelectric plants. In Brazil, the
construction of reservoirs to meet the energy demands
required for the accelerated development of this
country is encouraged by the government. However,
when it comes to mollusks, the terms of reference that
guide the implementation of the environmental studies
for licensing ventures require only a survey of the
snails vector of zoonosis. In addition to that, the
construction of dams causes environmental changes in
making a river into a lake. This fact changes the
patterns of connectivity of the wet drainage and affects
the structure of the fish fauna (composition and
abundance of fish), and their migratory routes. The
majority of the Unionoida use fish as dispersal vectors.
With the interruption of the migration route of host
fishes, the dispersion of mollusks is compromised.
123
Historical data (Takeda et al., 2005; Pereira et al.,
2012) revealed that the construction of 70 reservoirs in
a system of waterfalls along the most populated area of
Brazil, in high Paraná River, changed the lotic
environment to lentic, favoring the colonization of
the Corbiculidae invasive species and L. fortunei, as
well as the gastropod Melanoides tuberculata (Müller,
1774). The river segments that allow the survival of
native bivalves in their natural habitats are rare.
Furthermore, the fish that dispersed bivalve larvae are
unable to move upstream along rivers. Consequently,
all Unionoida species reported in this area are
endangered, though many of them do not appear on
official red lists.
The freshwater bivalves have been adapted to
drought and flood of the rivers for millions of years.
With the construction of reservoirs, the natural flood
pulse that occurred in the floodplains of the rivers has
become artificially regulated. In many of those rivers,
the overflow of the channel during the rainy season is
stopped, so there is no more communication with
floodplain lakes. This change in water dynamics of
rivers impacts the life cycle of bivalves that depend on
fish for their dispersal. The disconnection of these
environments limits the lasidia and glochidia dispersion through the fish.
Moreover, the bivalves can not keep up with sudden
emptying of reservoirs in times of intense rainfall.
Two types of impacts are known to be related to that.
One occurs in the reservoir when it is quickly emptied
by opening the floodgates. The water level decreases
dramatically exposing the entire bank, resulting in the
death of bivalves that can not keep up with the speed of
emptying. The same impact can be observed in the
Northeast of Brazil at the times of severe droughts,
when reservoirs became empty due the absence of
rains. The other impact occurs downstream the
reservoir when the water is released at high speed
dragging all the marginal fauna and flora, often
throwing the bivalves out of the system.
The dispersion of the invasive bivalve species in
several hydrographic regions of South America constitutes a threat to the conservation of native clams.
The golden mussel produces byssus threads that
enable the incrustation on the various types of hard
substrates forming macrofouling. This structure of
aggregates alter different types of substrate-forming
mussel beds on sediment and between rhizomes of the
Schoenoplectus californicus (C.A. Mey.) Palla
Hydrobiologia
(Cyperaceae), a kind of emergent shoreline vegetation
common in South America (Santos et al., 2012). Also,
it forms macroclusters over other types of free-floating
and amphibious macrophytes, such as species of trees
from the banks of rivers and lakes. All these habitats
are modified and so is the entire benthic fauna
composition. In addition to the habitat loss, the
bivalves are choked by the incrustation of mussels
on their shells, keeping the valves from opening, and
in some cases, from closing, too. So the native
bivalves can not perform filtering and become exposed
to predators.
The golden mussel occurs predominantly on hard
substrates, and to a lesser extent on sandy bottoms. On
the other hand, the Corbiculidae invasive species
occurs predominantly on sandy bottoms dominating
the benthic communities. Thus, the pressure of
invasive species on native clams is intense. L. fortunei
can reach 500,000 ind m-2 (Bergonci et al., 2009) and
C. fluminea just to 5,295 ind m-2 (Mansur & Garces,
1988).
L. fortunei form macrofouling on hard substrate
covering great areas of rivers and lake bottoms altering
the benthic fauna structure. The great density of L.
fortunei related to the high filtration rates have an
impact on the planktonic community and food chain
(Darrigran & Damborenea, 2011). The macrofouling
also impact the equipments of hydroelectric and
thermoelectric plants. However, until now new
designs for power plants do not present solutions to
minimize the effects of biofouling.
Conservation strategies
Since the 1990s there has been a great effort from most
South American countries for the preparation of their
official lists of endangered species of their fauna.
However, most of these lists include only vertebrate
species. Out of the 12 South American countries and 1
territory, only 4 have published lists of endangered
species of mollusks: Brazil, Colombia, Paraguay, and
Uruguay. The Brazilian list of threatened fauna
(Machado et al., 2008) includes the following species:
Diplodon (R.) koseritzi (Clessin, 1888) (critically
endangered, CEN); A. (A.) ferrarisi, A. (A.) iheringi,
D. caipira, D. (D.) dunkerianus, D. fontainianus, D.
pfeifferi, D. rotundus, C. undosa, A. (A.) trapezeus,
Fossula fossiculifera (Orbigny, 1835), L. blainvilliana
(endangered, EN); A. (A.) elongatus, A. (L.) ensiformis, A. (A.) soleniformis, A. (A.) tenebricosus, A. (A.)
trapesialis, M. legumen, M. siliquosa, Monocondylaea
paraguayana (Orbigny, 1835), Leila esula (Orbigny,
1835), B. stefanensis, D. (D.) expansus (Vulnerable,
VU). The species A. (A.) soleniformis, A. (A.) trapezeus, F. fossiculifera, H. balzani, B. stefanensis, D. (D.)
expansus, C. inflata and C. nehringi were considered
in the Paraguayan list (Ministerio de Agricultura y
Ganaderia, 1998) in only one category defined as
‘‘endangered’’. Polymesoda solida (Philippi, 1946)
was considered to be a vulnerable species in the
threatened fauna list of Colombia (Ardila et al., 2002).
The list of the IUCN (2012) includes only D. (D.)
dunkerianus and D. fontainianus (endangered, EN);
Diplodon (D.) expansus, D. pfeifferi, and Castalia
martensi (Ihering, 1891) (vulnerable, VU). The
National list of priority species (Scarabino & Clavijo,
2009) recognized that 93% of the species of
bivalves (37) from the freshwater environments from
Uruguay are priority for conservation. Later
Clavijo et al. (2010) prioritized three other species
for conservation.
Pereira et al. (2012) listed all species of freshwater
bivalves from Brazil and their conservations status
based on an official list. According to the authors, 1%
of species is critically endangered, 10% are endangered, 9% are vulnerable, and 37% need a new
evaluation and should be included in the revised list.
Many other species need more information for the
adequate determination of their conservation status.
The quotation of A. (A.) trapesialis in the list of
Brazilian threatened fauna should be revised because
this species has dispersed through aquaculture systems
as well as invasive species. A. (A.) trapesialis adapts to
different environmental conditions and probably does
not fit into any category of endangered species.
The lack of basic knowledge on freshwater clams is
a general reality that hinders the categorization of the
conservation status of the species. There are too many
gaps in collection records in Northern South America.
These regions are underrepresented in scientific collections; however, in better represented South regions
that are many gaps, too.
For the purposes of conservation and management,
Parada & Peredo (2005) and Peredo et al. (2005)
made an experience with relocation of two populations
of D. chilensis through a long-term evaluation of
survival and recruitment. After 18 years, the relocated
123
Hydrobiologia
population remained at the same site. At one site, the
authors did not found recruits but the individuals were
greater than at the original site. At the other site, the
recruitment has resulted from the dispersion of larvae
by the host fish. The size of the juveniles suggested
that recruitment took place in the previous reproductive season.
In Brazil, Beasley et al. (2000) studied the reproductive cycle of the harvested salmon pink mussel P.
syrmatophorus, giving strategies for conservation and
management of the species in the Tocantins River
Basin, in Brazil. Later, Beasley (2001) studied the
density, size frequency distribution, the habitat structure, and the impact of exploitation of these bivalves
by industries of pearl buttons aiming to define
management strategies. Initiatives on relocation,
translocation, and repopulation of the freshwater
mussels are unknown in Brazil.
There is little information on the conservation status
of freshwater bivalves in Uruguay. Scarabino &
Mansur (2007) listed the species of bivalves in
Uruguay with the intent of supporting the conservation
of this fauna. Scarabino (2004) reviewed for the first
time the conservation status of Uruguayan malacofauna and highlighted the priority actions to be taken in
order to conserve this fauna. Currently, there are
several initiatives to improve and disseminate the
knowledge base and implement conservation measures
for freshwater bivalves in Uruguay (Clavijo et al.,
2010). The first and only experience of relocation was
held in Uruguay in 2010 based on a private initiative.
As a result of this experience, a total of 133 specimens
of D. (R.) charruanus, D. (D.) rhuacoicus (Orbigny,
1835), A. (A.) trapesialis and A. (A.) patagonicus ended
up endangered by a dam construction were relocalized
to a natural place (Clavijo et al., 2012).
The concern on bivalve conservation in Argentina
begins with the implementation of database systems
for the malacological scientific collections. Rumi et al.
(2008) evaluated the richness of mollusk species in
continental Argentina, and mapped their distribution.
The authors offered subsidies for prioritizing areas for
conservation.
Final considerations
The number of 111 Uninoid species places South
America as a very rich continent, but not richer than
123
North America. According to Graf & Cummings
(2007), North America presents the highest diversity
of mussels on Earth (*300 species). Our results came
to 63 mussel species of Hyriidae and 48 Mycetopodidae, a number which is a bit higher than the figures
presented by Graf & Cummings (2007) for both
families (40 and 32 species, respectively) in South
America.
The most diverse hydrographic regions in South
America are: (1) very high richness, Amazon River,
Paraguay River, Uruguay River, and Rivers of the
South and Southeast Atlantic in Brazil; (2) high
richness, Orinoco River in Venezuela; Paranoplatense
System in Argentina; Uruguay River, La Plata River,
and Negro River in Uruguay; and (3) medium richness
(Amazon River in Peru, Upper Parana River in Brazil,
and Paraguay River in Paraguay). These hydrographic
areas are located within the two richest South American macroregions identified by Graf & Cummings
(2007): Amazon–Orinoco (on the Peba System) and
Paraná–Paraguay (on the Paranean System).
The hydrographic regions present distinct phylogenetic and species composition regardless of the level
of richness. Therefore, not only should the richness be
considered to be as a criterion for prioritizing areas for
conservation, but also the phylogenetic diversity of
communities engaged in services and functional
aspects relevant to ecosystem maintenance.
The wide distribution of some native species can be
attributed to their high tolerance to environmental
factors, transposition of geographical barriers, and
persistence in face of geological events in the past.
Native species with wide distribution, such as Anodontites trapesialis, may have similar properties to
invasive species, which would explain its wide
distribution along to hydrographic regions and success
in its current dispersion in the fish farms. However,
more studies are needed on the biology of this species
for us to understand their mechanisms of dispersion
and whether these mechanisms are related to a certain
degree of invasiveness.
Another issue to be considered is that the small
number of invasive species seems not to interfere in
the patterns of species composition and phylogenetic
lineages in the different hydrographic regions looked
at. L. fortunei does not contribute to the dominance of
Mytilidae lineage in none of the hydrographic regions
assessed with complex assemblages of native mollusks. On that line, it can be inferred from the
Hydrobiologia
occurrence of Corbiculidae invaders, among the
Veneroida, which are widely distributed in South
America, that they appear also in areas dominated by
Mycetopodidae and Hyriidae. It is also to consider that
the number of corbiculid invaders is much smaller
than the total number of species of Veneroida recorded
in the continent. However, it is important to raise
awareness to the potential impact of invasive species
that are dispersing by South American water courses.
The golden mussel invasion may result in the reduction of the diversity of bivalve mollusks in the
different addressed areas with the capacity to modify
the patterns of species richness, species composition,
and phylogenetic lineages. Considering this possibility, efforts should be made in order to control the
dispersion and population growth of invasive species.
The control of the spread of invasive species depends
primarily on educational actions intended to raise
awareness of boatmen, fishermen, and farmers, who
use the water for irrigation; their procedures and
equipment must be revised in an attempt to minimize
the danger of contamination of new bodies of water.
The distribution of invasive species L. fortunei, C.
largillierti, C. fluminea, and C. fluminalis is not related
to species richness in the different hydrographic
regions in South America. This distribution does not
corroborate to the assumption that the poorest communities in species would be more susceptible to
bioinvasion (Wolfe, 2002; Bohn et al., 2004).
However, the Andean region does not seem to be
inviting to the invasion of L. fortunei according to
Darrigran et al. (2011). The same authors identified
three environmental parameters that are barriers to
invasion in this region: salinity, river flow intermittence (in different sectors of Pilcomayo and Salado del
Norte Rivers), and concentration of suspended sediments (in the Bermejo River and in the upper reaches
of the Salado del Norte and Pilcomayo Rivers).
Detailed inventories of native bivalve fauna in
different hydrographic regions are also needed, as well
as the identification of habitats, with the environmental variables that govern the distribution of the species,
the patterns of diversity, and the provision of deeper
insights into the reproductive cycle and morphological
characters which are determinants for species recognition. This is essential for the establishment of
management strategies, identification of potential
areas for the conservation, breeding and relocation
of endangered species. The species composition and
phylogenetic patterns identified in this study will
contribute to the definition of priority actions for the
conservation of the native mollusks fauna and the
control of invasive species. They can also help to
direct more studies in order to understand this
diversity and to review the lists of endangered species.
Acknowledgments To UFRGS/PPECO/CENECO Universidade Federal do Rio Grande do Sul, Centro de Ecologia and
Programa de Pós-Graduação Ecologia for the facilities and
support; To CAPES—Coordenação de Aperfeiçoamento de
Pessoal de Nı́vel Superior for the scholarship to D. Pereira; To
ELETROBRÁS FURNAS (Furnas Centrais Elétricas S.A.) for the
research grant to M. C. D. Mansur; to Facultad de Ciencias
Naturales y Museo (Universidad Nacional de La Plata) and
Consejo Nacional de Investigaciones Cientificas y Tecnicas
(Proyecto de Investigacion Plurianual 1017), for the support to
G. Darrigran; to Dirección General de investigación y Postgrado,
Catholic University of Temuco, Chile, for financial support of
multiple proyects and research staff; and to CNPq/PROTAX –
Conselho Nacional de Pesquisas, Programa de Capacitação em
Taxonomia 562291/2010-5 for the scholarship to I. C. Miyahira.
References
Alvarenga, L. C. F. & C. N. Ricci, 1979a. Contribuição ao
conhecimento dos gloquı́dios do gênero Diplodon Spix,
1827: D. besckeanus (Dunker, 1849). (Bivalvia; Unionoidea; Hyriidae). In Fundação Zoobotânica do Rio Grande do
Sul (eds), Anais do V Encontro de Malacologistas Brasileiros. FZB, Porto Alegre: 33–38.
Alvarenga, L. C. F. & C. N. Ricci, 1979b. Variações morfológicas encontradas nas conchas de uma população de
Diplodon besckeanus (Dunker, 1849). (Bivalvia; Unionoidea; Hyriidae). In Fundação Zoobotânica do Rio
Grande do Sul (eds), Anais do V Encontro de Malacologistas Brasileiro. FZB, Porto Alegre: 41–53.
Alvarenga, L. C. F. & C. N. Ricci, 1989. Espécie nova de Mytilopsis Conrad, 1857, do rio Tocantins, Tucuruı́, Pará,
Brasil (Mollusca, Bivalvia, Dreissenidae). Memórias Instituto Oswaldo Cruz 84: 27–33.
Anflor, L. M. & M. C. D. Mansur, 2001. Pisidium punctiferum
(Guppy, 1867) (Bivalvia, Sphaeriidae) – Aspectos do seu
desenvolvimento em amostras da população do Arroio
Bom Jardim, Rio Grande do Sul. Biociências 9: 141–154.
Anton, H. E., 1837. Diagnosen einiger neuen Conchilien – Arten. Archiv für Naturgeschichte 1: 281–286.
Ardila, N., G. R. Navas & J. O. Reyes (eds), 2002. Libro rojo de
Invertebrados Marinos de Colombia. Serie Libros Rojos de
Especies Amenazadas de Colombia. Instituto de Investigación de Recursos Biológicos Alexander von Humboldt y
Ministerio del Medio Ambiente, Bogotá.
Avelar, W. E. P. & S. H. S. T. Mendonça, 1998. Aspectos da
gametogênese de Diplodon rotundus gratus (Wagner,
1827) (Bivalvia: Hyriidae) in Brazil. American Malacological Bulletin 14: 157–163.
123
Hydrobiologia
Baker, B., 1930. The mollusks collected by the University of
Michigan – Williamson expedition in Venezuela. Occasional Papers of the Museum of Zoology 210: 1–90.
Baker, M. D. F., 1914. The land and fresh-water mollusks of the
Stanford Expedition to Brazil. Proceedings of the United
States National Museum 65: 618–672.
Beasley, C. R., 2001. The impact of exploitation on freshwater
mussel (Bivalvia: Hyriidae) in the Tocantins River Brazil.
Studies on Neotropical Fauna and Environment 36:
159–165.
Beasley, C. R., E. Túry, W. G. Vale & C. H. Tagliaro, 2000. The
reproductive cycle, conservation and management of P.
syrmatophorus (Meuschen, 1781) in the Tocantins River.
Brazil. Journal of Molluscan Studies 66: 393–402.
Bergonci, P. E. A., M. C. D. Mansur, D. Pereira & C. P. Santos,
2009. Population sampling of the golden mussel, Limnoperna fortunei (Dunker, 1857), based on artificial ceramic
substrate. Biotemas 22: 85–94.
Bohn, T., O. T. Sandlund, P. Amundsen & R. Primicerio, 2004.
Rapidly changing life history during invasion. Oikos 106:
138–150.
Bonetto, A. A., 1961a. Notas sobre los géneros Castalina y
Castalia en el Parana medio e inferior. Dirección General
de Recursos Naturales, Ministerio de Agricultura e Ganaderia, Santa Fé.
Bonetto, A. A., 1961b. Investigaciones acerca de las formas
larvales en el género Diplodon y su aplicación a los estudios sistemáticos. Dirección General de Recursos Naturales, Ministerio de Agricultura y Ganaderia, Santa Fé: 1–47.
Bonetto, A. A., 1962. Especies del genero Mycetopoda en el
sistema hidrográfico del rio de La Plata. Revista del Museo
Argentino de Ciencias Naturales Bernardino Rivadavia 8:
173–182.
Bonetto, A. A., 1963. Contribución al conocimiento de Leila
blainvilleana (Lea) (Mollusca: Pelecypoda). Physis 24:
11–16.
Bonetto, A. A., 1964. Las espécies del gênero Diplodon (Moll.
Unionacea) en los rios de la pendiente atlántica del sur del
Brasil. Physis 24: 323–328.
Bonetto, A. A., 1965. Las almejas sudamericanas de la tribu
Castaliini. Comunicaciones Instituto Nacional de Limnologia 25: 187–196.
Bonetto, A. A., 1966. Especies de la subfamı́lia Monocondylaeinae en las aguas del sistema del Rio da La Plata (Moll.
Mutelacea). Archiv für Molluskenkunde 95: 3–14.
Bonetto, A. A., 1967a. La superfamı́lia Unionacea em la cuenca
Amazonica. In Lent, H. (ed.), Atas Simpósio Biota
Amazônica 3: Limnologia. CNPq, Rio de Janeiro: 63–82.
Bonetto, A. A., 1967b. El género Anodontites Bruguière (Mollusca, Pelecypoda) en el sistema hidrográfico del Plata.
Physis 26: 459–467.
Bonetto, A. A., 1972. A new species of Monocondylaeinae from
the Amazon basin, and some considerations on this subfamily in the hydrogeographic systems of South America.
Amazoniana 3: 224–230.
Bonetto, A. A., 1997. Las ‘‘ostras de agua dulce’’ (Muteloidea:
Mutelidae). Su Taxonomia y distribucion geográfica en el
conjunto de las naiades del mundo. Biociências 5: 113–142.
Bonetto, A. A. & D. H. Di Persia, 1975. Las poblaciones de
pelecipodos del arroyo Ayui Grande (Prov. Entre Rios) y
123
los factores que regulan su distribución y estructura. Ecosur
2: 123–151.
Bonetto, A. A. & I. Ezcurra-de-Drago, 1966. Notas Malacologicas IV. Moluscos paranaensis en aguas uruguayas y del
sur de Brasil. Physis 26: 121–124.
Bonetto, A. A., M. Tassara & A. Rumi, 1986. Australis n.
subgen. de Diplodon Spix (Bivalvia, Unionacea) y possibles relaciones con Hyriidae australianos. Boletin de La
Sociedad de Biologia de Concepción 57: 55–61.
Callil, C. T. & M. C. D. Mansur, 2002. Corbiculidae in the
Pantanal: history of invasion in southeast and central
South America and biometrical data. Amazoniana 17:
153–167.
Callil, C. T. & M. C. D. Mansur, 2005. Ultrastructural analysis
of the shells of Anodontites trapesialis (Lamarck) and
Anodontites elongatus (Swainson) (Mollusca, Bivalvia,
Etherioidea) from the Mato Grosso Pantanal Region,
Brazil. Revista Brasileira de Zoologia 22: 724–734.
Callil, C. T. & M. C. D. Mansur, 2007. Gametogênese e dinâmica da reprodução de Anodontites trapesialis (Lamarck)
(Unionoida, Mycetopodidae) no lago Baı́a do Poço,
planı́cie de inundação do rio Cuiabá, Mato Grosso, Brasil.
Revista Brasileira de Zoologia 24(3): 825–840.
Callil, C. T., D. Krinski & F. A. Silva, 2012. Variations on the
larval incubation of Anodontites trapesialis (Unionoida,
Mycetopodidae): synergetic effect of the environmental
factors and host availability. Brazilian Journal of Biology
72: 1–8.
Castellanos, Z. J. A. & N. A. Landoni, 1990. La familia Mycetopodidae Gray, 1840 en la Republica Argentina. In
Ringuelet, R. A. (ed.), Fauna de Agua Dulce de la Republica Argentina. FECIC, Buenos Aires: 1–86.
Clavijo, C., A. Carranza, F. Scarabino & A. Soutullo, 2010.
Conservation priorities for Uruguayan land and freshwater
molluscs. Tentacle 18: 14–16.
Clavijo, C., G. Martı́nez & A. Carranza, 2012. First relocation of
freshwater mussels in Uruguay. Tentacle 20: 9–11.
Clessin, S., 1879. Familie der Cycladeen. In Abbildungen nach
der Natur mit Beschreibungen. In Martini, F. H. W. & J.
H. Chemnitz (eds), Systematisches Conchylien Cabinet.
Bauer & Baspe, Nümberg: 1–283.
Clessin, S., 1888. Binnenmollusken aus Südbrasilien. Malakozoologische Blätter 10: 165–174.
Colle, A. C. & C. T. Callil, 2012. Environmental influences on
the composition and structure of the freshwater mussels in
shallow lakes in the Cuiabá River floodplain. Brazilian
Journal of Biology 72: 249–256.
Cooley, L. R. & D. Ó Foighil, 2000. Phylogenetic analysis of
the Sphaeriidae (Mollusca: Bivalvia) based on mitochondrial 16S rDNA gene sequences. Invertebrate Biology 119:
299–308.
Dance, S. P., 1966. Shell Collecting: An Illustrated History.
Faber & Faber, London.
Darrigran, G. & M. C. Damborenea, 2009. Introdução a Biologia das Invasões – O Mexilhão Dourado na América do
Sul: Biologia, Dispersão, Impacto. Prevenção e Controle.
Cubo Multimı́dia Ltda, São Carlos.
Darrigran, G. & M. C. Damborenea, 2011. Ecosystem engineering impacts of Limnoperna fortunei in South America.
Zoological Science 28: 1–7.
Hydrobiologia
Darrigran, G. & G. Pastorino, 1995. The recent introduction of
Asiatic Bivalve, Limnoperna fortunei (Mytilidae) into
South America. The Veliger 38: 183–187.
Darrigran, G., C. Damborenea & N. Greco, 2007. Freshwater
invasive bivalves in man-made environments: a case study
of larvae biology of Limnoperna fortunei in a hydroelectric
power plant in South America. AMBIO 36: 575–579.
Darrigran, G., C. Damborenea, E. Drago, I. Ezcurra de Drago & A.
Paira, 2011. Environmental factors restrict the invasion process of Limnoperna fortunei (Mytilidae) in the neotropical
region: a case study from the Andean tributaries. Annales de
Limnologie – International Journal of Limnology 47: 1–10.
Debastiani, V. J. & V. D. Pillar, 2012. SYNCSA—R tool for
analysis of metacommunities based on functional traits and
phylogeny of the community components. Bioinformatics
28: 2067–2068.
Doello-Jurado, M., 1921. Uma nueva espécie de Eupera del Rio
de La Plata. Physis 5: 72–75.
Duarte, L. D. S., 2011. Phylogenetic habitat filtering influences
forest nucleation in grasslands. Oikos 120: 208–215.
Duarte, L. D. S., P. V. Prieto & V. D. Pillar, 2012. Assessing
spatial and environmental drivers of phylogenetic structure
in Brazilian Araucaria forests. Ecography 35: 952–960.
Fitkau, E. J., 1981. Armut in der Vielfalt – Amazonien als
Lebensraum für Weichtiere. Mitteilungen der Zoologischen Gesellschaft Braunau 3: 329–343.
Formica-Corsi, A., 1900. Moluscos de la Republica Oriental del
Uruguay. Anales del Museo Nacional de Montevideo 1:
1–237.
Giribet, G. & W. Wheeler, 2002. On bivalve phylogeny: a highlevel analysis of the Bivalvia (Mollusca) based on combined morphology and DNA sequence data. Invertebrate
Biology 121: 271–324.
Gower, J. C., 1966. Some distance properties of latent root and
vector methods used in multivariate analysis. Biometrika
53: 325–338.
Graf, D. L., & K. S. Cummings, 2007. Review of the systematicsand global diversity of freshwater mussel species (Bivalvia: Unionoida). Journal of Molluscan Studies 73: 291–314.
Grandón, M. A., J. A. Barros & R. R. González, 2008. Caracterización metabólica de Diplodon chilensis (Gray 1828)
(Bivalvia: Hyriidae) expuesto a anoxia experimental. Revista de Biologı́a Marina y Oceanografı́a 43: 531–537.
Guardia-Felipi, P. & Â. T. Silva-Souza, 2008. Anodontites
trapesialis (Lamarck, 1819): um bivalve parasito de peixes
de água doce. Semina, Ciências Agrárias 29: 895–904.
Haag, W. R., 2012. North American Freshwater Mussels, Natural History, Ecology and Conservation. Cambridge University Press, Cambridge.
Haas, F., 1930. Versuch einer kritischen Sichtung der Südamerikanischen Najaden, hauptsächlich an hand der Sammlung
des Senckenberg-Museums I. Senckenbergiana 12: 175–195.
Haas, F., 1931a. Versuch einer kritischen Sichtung der Südamerikanischen Najaden, hauptsächlich an hand der Sammlung
des Senckenberg-Museums II. Senckenbergiana 13: 30–52.
Haas, F., 1931b. Versuch einer kritischen Sichtung der Südamerikanischen Najaden, hauptsächlich an hand der
Sammlung des Senckenberg-Museums III. Senckenbergiana 13: 87–111.
Haas, F., 1969. Superfamiia Unionacea. In Mertens, R., W.
Hennig & H. Wermuth (eds), Das Tierreich – Eine
Zusammenstellung und Kennzeichunung der rezenten
Tierformen. Walter de Gruyter, Berlin: 1–663.
Hebling, N. J., 1976. The functional morphology of Anodontites
trapezeus (Spix) and Anodontites trapesialis (Lamarck)
(Bivalvia: Mycetopodidae). Boletim de Zoologia da Universidade de São Paulo 1: 265–298.
Hebling, N. J. & A. M. G. Penteado, 1974. Anatomia functional
de Diplodon rotundus gratus Wagner, 1827 (Mollusca,
Bivalvia). Revista Brasileira de Biologia 34: 67–80.
Hubert, N., & J. F. Renno, 2006. Historical biogeography of
South American freshwater fishes. Journal of Biogeography 33: 1414–1436.
Hupé, H. 1857. Mollusques. In Francis De Castelnau, F. (ed.),
Animaus nouveaux ou rares recueillis pendant l’expedition
dans les parties centrals de l’Amerique du Sud, Rio de
Janeiro à Lima au Para; executée par ordre du gouvernement français pendant lês anées 1834 à 1847. Chez P.
Bertrand Libraire-Editeur, Paris: 1–96.
Ihering, H., 1890. Revision der von Spix in Brasilien gesammelten Najaden. Archiv für Naturgeschichte 11: 117–170.
Ihering, H., 1891. Anodonta und Glabaris. Zoologischen Anzeiger 14: 474–487.
Ihering, H., 1893. Najaden von S. Paulo und die geographische
Verbreitung der süsswasser Faunen von Südamerika. Archiv für Naturgeschichte 1: 45–140.
Ihering, H., 1910. Über brasilianische Najaden. Abhandlungen
der Senckenbergischen Naturforschenden Gesellschaft 32:
111–140.
Ituarte, C. F., 1989. Los generos Byssanodonta d’Orbigny, 1846 y
Eupera Bourguignat, 1854 (Bivalvia: Sphaeriidae) en el area
Paranoplatense. Descripcion de Eupera iguazuensis n. sp.
del rio Iguazu, Misiones, Argentina. Neotropica 35: 53–63.
Ituarte, C. F., 1994a. Eupera guaraniana n. sp. (Pelecypoda:
Sphaeriidae) del rio Uruguay, Argentina. Gayana Zoologı́a
58: 1–7.
Ituarte, C. F., 1994b. Corbicula and Neocorbicula (Bivalvia:
Corbiculidae) in the Paraná, Uruguay, and Rio de La Plata
Basin. The Nautilus 107: 120–135.
Ituarte, C. F., 1995. Nuevos registros de Pisidium Pfeiffer, 1821
y Sphaerium Scopoli, 1777 (Bivalvia Sphaeriidae) en
Chile, Bolivia y Noroeste argentino. Neotrópica 41: 31–41.
Ituarte, C. F., 1996. Argentine species of Pisidium Pfeiffer,
1821, and Musculium Link, 1807 (Bivalvia: Sphaeriidae).
The Veliger 39: 189–203.
Ituarte, C. F., 1999. Pisidium chilense (d’Orbigny, 1846) and
new species of Pisidum C. Pfeiffer, 1821 from southern
Chile (Bivalvia, Sphaeriidae). Zoosystema 21: 249–257.
Ituarte, C. F., 2000. Pisidium taraguyense and Pisidum pipoense, new species from Northeastern Argentina (Bivalvia:
Sphaeriidae). The Veliger 43: 51–57.
Ituarte, C. F., 2001. Pisidium chiquitanum new species from
Santa Cruz de la Sierra, Bolivia (Bivalvia:Sphaeriidae).
The Nautilus 115: 50–54.
Ituarte, C. F., 2004. Sphaeriidae (Bivalvia) from Peruvian
Amazon floodplain, with the description of Pisidium iquito
new species. The Nautilus 118: 167–174.
Ituarte, C. F., 2005. Sphaeriidae of Northweastern Argentina,
including three new species of Pisidium (Bivalvia: Sphaeriidae). Neotropica 39: 11–16.
Ituarte, C. F., 2007. Las especies de Pisidum Pfeiffer de
Argentina, Bolivia, Chile, Perú y Uruguay (Bivalvia:
123
Hydrobiologia
Sphaeriidae). Revista del Museo Argentino de Ciencias
Naturales Bernardino Rivadavia 9: 169–203.
Ituarte, C. F. & A. V. Korniushin, 2006. Anatomical characteristics of the two enigmatic and two poorly known Pisidium species (Bivalvia: Sphaeriidae) from southern
South America. Zootaxa 1338: 33–47.
Ituarte, C. F. & M. C. D. Mansur, 1993. Eupera elliptica n. sp.,
una nueva especie en el rio Iguazú, Misiones, Argentina.
Neotropica 39: 11–16.
IUCN, 2012. The IUCN Red List of Threatened Species. Version 2012.2. Available at http://www.iucnredlist.org.
Jara-Seguel, P., C. Palma-Rojas, S. Peredo, E. Parada & G. Lara,
2000. Quantitative karyotype of Diplodon chilensis chilensis
(Gray,1828) (Bivalvia;Hyriidae). Gayana 64: 189–193.
Josseaume, F., 1889. Voyage de M. Eugéne Simon au Venezuele. Mémoires de la Société Zoologique de France 2:
232–259.
Klappenbach, M. A., 1962. Una nueva especie de Eupera
(Moll., Pelecypoda) del Uruguay. Revista del Museo Argentino de Ciencias Naturales Bernardino Rivadavia 8:
101–106.
Kuiper, J. G. J., 1983. The Sphaeriidae of Australia. Basteria 47:
3–52.
Kuiper, J. G. J. & W. Hinz, 1984. Zur Fauna der Kleinmuscheln
in den Anden. Archiv für Molluskenkunde 114: 137–156.
Küster, H. C., 1842. Die Flussperlmuscheln (Unio et Hyria). In
Abbildungen nach der Natur. In Martini, F. H. W. & J.
H. Chemnitz (eds), Systematisches Conchylien Cabinet
v.9. Bauer & Baspe, Nümberg: 1–318.
Lamarck, J. B. P. A., 1819. Histoire Naturelle des Animaux sans
Vertebres. Lamarck, Paris.
Lanzer, R., 2001. Distribuição, fatores históricos e dispersão de
moluscos lı́mnicos em lagoas do sul do Brasil. Biociências
9: 63–84.
Lanzer, R. & A. Schäfer, 1987. Moluscos dulceaquı́colas como
indicadores de condições tróficas em lagoas costeiras do
sul do Brasil. Revista Brasileira de Biologia 47: 47–56.
Lara, G. & C. Moreno, 1995. Efecto de la depredación de Aegla
abtao sobre la población de Diplodon chilensis en el Lago
Panguipulli. Revista Chilena de Historia Natural 68:
123–129.
Lara, G. & E. Parada, 1988. Distribución espacial y densidad de
Diplodon chilensis chilensis (Gray, 1828) en el lago Villarrica (30°180 S; 72°050 W). Boletı́n de la Sociedad de Biologı́a de Concepción 59: 105–114.
Lara, G. & E. Parada, 1991. Seasonal changes in the condicion
index of Diplodon chilensis chilensis (Gray 1828) in sandy
and muddy substrata. Villarrica Lake (39°180 S; 72°050 W).
Boletı́n de la Sociedad de Biologı́a de Concepción 62:
99–106.
Lara, G. & E. Parada, 2008. Manutención del patrón de distribución espacial, densidad y estructura de tamaños de la
almeja de agua dulce Diplodon chilensis (Bivalvia: Hyriidae) en el Lago Panguipulli. Gayana 72: 41–51.
Lara, G. & E. Parada, 2009. Substrate selection by the freshwater mussel Diplodon chilensis (Gray 1828): field and
laboratory experiments. Journal of Molluscan Studies 75:
153–157.
Lara, G., E. Parada & S. Peredo, 2002a. Alimentación y conducta alimentaria de la almeja de agua dulce Diplodon
chilensis (Bivalvia: Hyriidae). Gayana 66: 107–112.
123
Lara, G., A. Contreras & F. Encina, 2002b. La almeja de
agua dulce Diplodon chilensis (Bivalvia: Hyriidae) potencial biofiltro para disminuir los niveles de coliformes
fecales en pozos: experimentos de laboratorio. Gayana 66:
113–118.
Lasso, C. A., R. Martı́nez-Escarbassiere, J. C. Capelo, M.
A. Morales-Betancourt & A. Sánchez-Maya, 2009. Lista de
los moluscos (Gastropoda-Bivalvia) dulceacuı́colas y estuarinos de la cuenca del Orinoco (Venezuela). Biota Colombiana 10: 63–74.
Lea, I., 1834. Observations on the genus Unio, Vol. 1. Authors
ed, Philadelphia.
Lea, I., 1838. Observations on the genus Unio, Vol. 2. Authors
ed, Philadelphia.
Lea, I., 1852. Observations on the genus Unio, Vol. 5. Authors
ed, Philadelphia.
Lea, I., 1857. Observations on the genus Unio, Vol. 6. Authors
ed, Philadelphia.
Lea, I., 1860. Observations on the genus Unio, Vol. 7. Authors
ed, Philadelphia.
Lea, I., 1863. Observations on the genus Unio, Vol. 10. Authors
ed, Philadelphia.
Lea, I., 1869. Observations on the genus Unio, Vol. 12. Authors
ed, Philadelphia.
Lea, I., 1874. Observations on the genus Unio, Vol. 13. Authors
ed, Philadelphia.
Leal, M. E. C., 2011. Evolução dos sistemas hidrogeológicos
Sul Americanos. In Fernandez, M. A., S. B. Santos, A.
Pimenta & S. C. Thiengo (org), Tópicos em Malacologia.
Sociedade Brasileira de Malacologia. SBMa, Rio de
Janeiro: 55–66.
Legendre, P. & L. Legendre, 1998. Numerical Ecology, 2nd ed.
Elsevier, Amsterdam.
Machado, A. B. M., G. M. Drummond & A. P. Paglia, 2008.
Livro Vermelho da Fauna Brasileira Ameaçada de Extinção. Brasilia, Ministério do Meio Ambiente e Fundação
Biodiversitas, Brasilia.
Mansur, M. C. D., 1970. Lista de moluscos bivalves das famı́lias
Hyriidae e Mycetopodidae para o Estado do Rio Grande do
Sul. Iheringia Série Zoologia 39: 33–95.
Mansur, M. C. D., 1972. Morfologia do sistema digestivo
de Castalia undosa martensi (Ihering, 1891) (Bivalvia,
Hyriidae). Iheringia Série Zoologia 41: 21–34.
Mansur, M. C. D., 1974. Monocondylaea minuana Orbigny,
1835: variabilidade da concha e morfologia do sistema
digestivo (Bivalvia, Mycetopodidadae). Iheringia Série
Zoologia 45: 3–25.
Mansur, M. C. D., 1999. Gloquı́dio de Diplodon martensi (Ihering) (Mollusca, Bivalvia, Hyriidae) e seu ciclo
parasitário. Revista Brasileira de Zoologia 162: 185–194.
Mansur, M. C. D., 2012. Bivalves invasores lı́mnicos: morfologia comparada de Limnoperna fortunei e espécies de
Corbicula spp. In Mansur, M. C. D., C. P. Santos, D.
Pereira, I. C. P. Paz, M. L. L. Zurita, M. T. R. Rodriguez,
M. V. Nehrke & P. E. A. Bergonci (org), Moluscos
Lı́mnicos Invasores no Brasil: Biologia, Prevenção, Controle. Redes Editora, Porto Alegre: 61–74.
Mansur, M. C. D. & L. M. Anflor, 1981. Diferenças morfológicas entre Diplodon charruanus Orbigny, 1835 e Diplodon
pilsbryi Marshall, 1928 (Bivalvia, Hyriidae). Iheringia
Série Zoologia 60: 101–116.
Hydrobiologia
Mansur, M. C. D. & N. M. R. Campos-Velho, 1990. Técnicas
para o estudo de gloquı́dios de Hyriidae (Mollusca, Bivalvia, Unionoida). Acta Biologica Leopoldensia 121: 5–18.
Mansur, M. C. D. & N. M. R. Campos-Velho, 2000. Glochidium
of Castalia martensi (Ihering, 1891) (Mollusca, Bivalvia,
Hyriidae). Heldia 31: 6–10.
Mansur, M. C. D. & L. M. M. P. Garces, 1988. Ocorrência e
densidade de Corbicula fluminea (Müller, 1774) e Neocorbicula limosa (Maton, 1811) na Estação Ecológica do
Taı́m, Rio Grande do Sul, Brasil. Iheringia Série Zoologia
68: 99–115.
Mansur, M. C. D. & C. Meier-Brook, 2000. Morphology of
Eupera (Bourguignat, 1854) and Byssanodonta (Orbigny,
1846) and the phylogenetic affinities whitin Sphaeriidae
and Corbiculidae (Bivalvia, Veneroida). Archiv für Molluskenkunde der Senckenbergischen Naturforschenden
Gesellschaft 128: 1–59.
Mansur, M. C. D. & J. Olazarri, 1995. Redescrição, distribuição
e preferências ambientais de Anodontites ferrarisi (Orbigny, 1835) revalidada (Bivalvia). Iheringia Série Zoologia
79: 3–12.
Mansur, M. C. D. & D. Pereira, 2006. Bivalves lı́mnicos da
bacia do rio dos Sinos, Rio Grande do Sul, Brasil (Bivalvia,
Unionoida, Veneroida e Mytiloida). Revista Brasileira de
Zoologia 23: 1123–1147.
Mansur, M. C. D. & D. M. Pimpão, 2008. Triplodon chodo, a
new species of pearly fresh water mussel from the Amazon
Basin (Mollusca, Bivalvia, Unionoida, Hyriidae). Revista
Brasileira de Zoologia 25: 111–115.
Mansur, M. C. D. & M. G. O. Silva, 1990. Morfologia e microanatomia comparada de Bartletia stefanensis (Moricand, 1856) e Anodontites tenebricosus (Lea, 1834)
(Bivalvia, Unionoida, Muteloidea). Amazoniana 11:
147–166.
Mansur, M. C. D. & M. G. O. Silva, 1999. Description of glochidia of five species of freshwater mussels (Hyriidae:
Unionoidea) from South America. Malacologia 41:
475–483.
Mansur, M. C. D. & R. M. Valer, 1992. Moluscos bivalves do rio
Uraricoera e rio Branco, Roraima, Brasil. Amazoniana 12:
85–100.
Mansur, M. C. D. & I. L. Veitenheimer, 1975. Nova espécie
de Eupera (Bivalvia: Sphaeriidae) e primeiras contribuições anatômicas para o gênero. Iheringia Série Zoologia
47: 23–46.
Mansur, M. C. D. & I. L. Veitenheimer-Mendes, 1979. Redescrição de Mycetopoda legumen (Martens, 1988) (Bivalvia,
Mycetopodidae). Revista Brasileira de Biologia 39:
695–702.
Mansur, M. C. D., C. Schulz & L. M. M. P. Garces, 1987.
Moluscos bivalves de água doce: identificação dos gêneros
do sul e leste do Brasil. Acta Biologica Leopoldensia 9:
181–202.
Mansur, M. C. D., I. L. Veitenheimer-Mendes & J. E. M.
Almeida-Caon, 1988. Mollusca, Bivalvia de um trecho do
curso inferior do rio Jacuı́, RS, Brasil. Iheringia Série Zoologia: 87–108.
Mansur, M. C. D., C. Schulz, M. G. O. Silva & N. M. R.
Campos-Velho, 1991. Moluscos bivalves lı́mnicos da
Estação Ecológica do Taı́m e áreas adjacentes, Rio Grande
do Sul, Brasil. Iheringia Série Zoologia 71: 43–58.
Mansur, M. C. D., R. M. Valer & N. C. M. Aires, 1994. Distribuição e preferências ambientais dos moluscos bivalves
do açude do Parque de Proteção Ambiental COPESUL,
municı́pio de Triunfo, Rio Grande do Sul, Brasil. Biociências 2: 27–45.
Mansur, M. C. D., I. Heydrich, D. Pereira, L. M. Z. Richinitti, J.
C. Tarasconi & E. C. Rios, 2003a. Moluscos. In Fontana, C.
S., G. A. Bencke & R. E. Reis (eds), Livro Vermelho da
Fauna Ameaçada de Extinção no Rio Grande do Sul.
EDIPUCRS, Porto Alegre: 49–71.
Mansur, M. C. D., C. P. Santos, G. Darrigran, I. Heydrich, C.
T. Callil & F. R. Cardoso, 2003b. Primeiros dados qualiquantitativos do mexilhão dourado, Limnoperna fortunei
(Dunker), no Delta do Jacuı́, no Lago Guaı́ba e na Laguna
dos Patos, Rio Grande do Sul, Brasil e alguns aspectos de
sua invasão no ambiente. Revista Brasileira de Zoologia
20: 75–84.
Mansur, M. C. D., F. R. Cardoso, L. A. Ribeiro, C. P. Santos, B.
M. Thormann, F. C. Fernandes & L. M. Z. Richinitti,
2004a. Distribuição e conseqüências após cinco anos da
invasão do mexilhão-dourado, Limnoperna fortunei, no
estado do Rio Grande do Sul, Brasil (Mollusca, Bivalvia,
Mytilidae). Biociências 122: 165–172.
Mansur, M. C. D., C. B. Quevedo, C. P. Santos, & C. T. Callil,
2004b. Prováveis vias da introdução de Limnoperna fortunei (Dunker,1857) (Mollusca, Bivalvia, Mytilidae) na
bacia da laguna dos Patos, Rio Grande do Sul e novos
registros de invasão no Brasil pelas bacias do Paraná e
Paraguai. In Silva, J. S. V. & R. C. C. L. Souza (org), Água
de Lastro e Bioinvasão. Interciências, Rio de Janeiro:
33–38.
Mansur, M. C. D., C. Ituarte & C. Meier-Brook, 2008. A
new species of Sphaerium Scopoli, 1777, from southern Brazil (Bivalvia: Sphaeriidae). The Nautilus 122:
228–235.
Mansur, M. C. D., D. M. Pimpão, P. E. A. Bergonci, C. P. Santos
& G. C. S. Figueiredo, 2012a. Morfologia e ciclo larval
comparados de bivalves lı́mnicos invasores e nativos. In
Mansur, M. C. D., C. P. Santos, D. Pereira, I. C. P. Paz, M.
L. L. Zurita, M. T. R. Rodriguez, M. V. Nehrke & P. E. A.
Bergonci (org), Moluscos Lı́mnicos Invasores no Brasil:
Biologia, Prevenção, Controle. Redes Editora, Porto Alegre: 95–110.
Mansur, M. C. D., A. S. Vanin, P. E. A. Bergonci & A. S. Oliveira, 2012b. Dinâmica reprodutiva de Corbicula fluminea
e Corbicula largillierti. In Mansur, M. C. D., C. P. Santos,
D. Pereira, I. C. P. Paz, M. L. L. Zurita, M. T. R. Rodriguez,
M. V. Nehrke & P. E. A. Bergonci (org), Moluscos
Lı́mnicos Invasores no Brasil, Biologia, Prevenção, Controle. Redes Editora, Porto Alegre: 119–124.
Mansur, M. C. D., C. P. Santos, D. Pereira, I. C. P. Paz, M. L. L.
Zurita, M. T. R. Rodriguez, M. V. Nehrke & P. E. A.
Bergonci (org), 2012c. Moluscos Lı́mnicos Invasores no
Brasil: Biologia, Prevenção, Controle. Redes Editora,
Porto Alegre.
Marshall, W. B., 1916. Three new species of Anodontites from
Brazil. Proceedings of the United States National Museum
49: 527–529.
Marshall, W. B., 1922. New pearly fresh water mussels from
South America. Proceedings of the United States National
Museum 61: 1–9.
123
Hydrobiologia
Marshall, W. B., 1924. New Uruguayan mollusks of the genus
Corbicula. Proceedings of the United States National
Museum 66: 1–12.
Marshall, W. B., 1927a. A new genus and two new species of
South American fresh-water mussels. Proceedings of the
United States National Museum 71: 1–3.
Marshall, W. B., 1927b. New species of mollusks of the genus
Corbicula from Uruguay and Brazil. Proceedings of the
United States National Museum 72: 1–7.
Marshall, W. B., 1928. New fresh-water and marine bivalve
shells from Brazil and Uruguay. Proceedings of the United
States National Museum 74: 1–7.
Marshall, W. B., 1930. New land and fresh-water mollusks from
South America. Proceedings of the United States National
Museum 77: 1–7.
Martins, D. S., I. L. Veitenheimer-Mendes & M. C. FaccioniHeuser, 2004. Corbicula (Bivalvia, Corbiculidae) em simpatria no lago Guaı́ba, RS, Brasil. Biociências 12: 129–138.
Maton, W. G., 1811. Description of seven species of Testacea.
Transactions of the Linnean Society 10: 325–332.
Meier-Brook, C., 1967. Pisidium forense, a new species from
Brazil (Mollusca; Eulamellibranchiata; Sphaeriidae). Archiv für Hydrobiologie 64: 63–68.
Ministerio de Agricultura y Ganaderia, 1998. Fauna Amenazada
del Paraguay. Direccion de Parques Nacionales y Vida
Silvestre, Fundación Moises Bertoni, Asuncion.
Miyahira, I. C., M. C. D. Mansur, J. B. Carneiro & S. B. Santos,
2012a. Freshwater mussels (Hyriidae, Diplodon) of the
state of the Rio de Janeiro, Brasil: the last survivors?
Tentacle 20: 19–21.
Miyahira, I. C., S. B. Santos, M. C. D. Mansur & J. B. Carneiro,
2012b. Freshwater mussels in Brazil: past, present and future,
at least, we hope they have one. American Conchologist 40:
16–18.
Mondaca, G., 2011. El enfoque de gestión integral de recursos
hı́dricos por cuencas, como propuesta base de la regulación
hı́drica en Bolivia. >Por qué la importancia de una visión de
cuencas en la futura ley de aguas? Revista Virtual REDESMA 5: 59–71.
Morretes, F. L., 1949. Ensaio de catálogo dos moluscos do
Brasil. Arquivos do Museu Paranaense 7: 3–216.
Morretes, F. L., 1953. Adenda e corrigenda ao ensaio de catálogo dos moluscos do Brasil. Arquivos do Museu Paranaense 10: 37–76.
Olazarri, J., 1963. Primera contribución a la bibliografia malacologica uruguaya. Comunicaciones de La Sociedad Malacologica del Uruguay 1: 111–222.
Olazarri, J., 1966. Los moluscos de agua dulce del Departamento
de Colonia, Uruguay Parte I: Pelecypoda. Comunicaciones
de La Sociedad Malacologica del Uruguay 2: 15–36.
Olazarri, J., 1975. Historia de La Malacologia en el Uruguay.
Museu de Historia Natural de Monteviedeo, Montevideo.
Orbigny, A. D’., 1835. Synopsis terrestrium et fluviatilium
molluscorum in suo per American Meridionalem itinere.
Magazin de Zoologie 5: 1–40.
Orbigny, A. D’., 1846. Voyage dans l’Amerique Méridionale: 5
Mollusques. C. P Bertrand, Paris.
Ortmann, A. E., 1921. South American naiads: a contribution to
the knowledge of the freshwater mussels of South America.
Memories of the Carnegie Museum 8: 451–670.
123
Parada, E. & S. Peredo, 1994. Un enfoque ecológico evolutivo
de lãs estratégias de historia de vida de lós Hyriidos
chilenos (Mollusca, Bivalvia) Boletı́n de la Sociedad de
Biologı́a de Concepción 65: 71–80.
Parada, E. & S. Peredo, 2002. Estado actual de la Taxonomia de
bivalves dulceacuı́colas chilenos: progressos y conflictos.
Revista Chilena de Historia Natural 75: 691–701.
Parada, E. & S. Peredo, 2005. La relocalización como una
herramienta de conservación y manejo de la biodiversidad.
Lecciones aprendidas con Diplodon chilensis (Gray 1828)
(Bivalvia: Hyriidae). Gayana 69: 41–47.
Parada, E., S. Peredo & C. Gallardo, 1987. Esfuerzo reproductivo em Diplodon chilensis (Gray, 1828) (Bivalvia, Hyriidae), uma proposicion para su determinación. Boletı́n de la
Sociedad de Biologı́a de Concepción 58: 121–126.
Parada, E., S. Peredo, G. Lara & F. Antonin, 1989a. Contribución al conocimiento de los Hyriidae Chilenos. Boletı́n de
la Sociedad de Biologı́a de Concepción 60: 173–182.
Parada, E., S. Peredo, G. Lara & I. Valdebenito, 1989b. Growth,
age and life span of the freshwater mussel Diplodon chilensis chilensis (Gray, 1828). Archiv für Hydrobiologie
115: 563–573.
Parada, E., S. Peredo & C. Gallardo, 1990. Tácticas reproductivas y dinámica poblacional de Diplodon chilensis (Gray,
1828) (Bivalvia, Hyriidae). Revista Chilena de Historia
Natural 63: 23–35.
Parada, E., S. Peredo, J. Valenzuela & D. Manuschevich, 2007.
Extention of the current northern distribution range of
freshwater mussel Diplodon chilensis (Gray, 1828) (Bivalvia: Hyriidae) in Chile. Gayana 71: 212–215.
Parodiz, J. J. & A. A. Bonetto, 1963. Taxonomy and zoogeographic
relationships of the South American naiades (Pelecypoda:
Unionacea and Mutelacea). Malacologia 1: 179–213.
Parodiz, J. J. & L. Hennings, 1965. The Neocorbicula (Mollusca, Pelecypoda) of the Paraná–Uruguay Basin. Annals
of the Carnegie Museum 38: 69–96.
Pellant, C., 1996. An Illustrated Guide to Fossils. The Nature
Company, Berkley.
Peredo, S. & E. Parada, 1984. Gonadal organization and
gametogenesis in the freshwater mussel Diplodon chilensis
chilensis (Mollusca: Bivalvia). The Veliger 27: 126–133.
Peredo, S. & E. Parada, 1986. Reproductive cycle in the freshwater mussel Diplodon chilensis chilensis (Mollusca:
Bivalvia). The Veliger 28: 418–425.
Peredo, S., O. Garrido & E. Parada, 1990. Spermiogenesis and
sperm ultrastructure in the freshwater mussel Diplodon
chilensis chilensis (Mollusca: Bivalvia). Invertebrate
Reproduction and Development 17: 171–179.
Peredo, S., P. Jara-Seguel, E. Parada & C. Palma-Rojas, 2003.
Comparative karyology of lentic and lotic populations of
Diplodon chilensis chilensis (Bivalvia: Hyriidae). The
Veliger 46: 314–319.
Peredo, S., E. Parada, I. Valdebenito & M. Peredo, 2005.
Relocation of the freshwater mussel Diplodon chilensis
(Hyriidae) as a strategy for its conservation and management. Journal of Molluscan Studies 71: 195–198.
Pereira, D., I. L. Veitenheimer-Mendes, M. C. D. Mansur & M.
C. P. Silva, 2000. Malacofauna lı́mnica do sistema de irrigação do arroio Capivara, Triunfo, RS, Brasil. Biociências 8: 137–157.
Hydrobiologia
Pereira, D., J. O. Arruda, R. Menegat, M. L. Porto, A. Schwarzbold & S. M. Hartz, 2011. Guildas tróficas, composição e distribuição de espécies de moluscos lı́mnicos no
gradiente fluvial de um riacho subtropical brasileiro. Biotemas 24: 21–36.
Pereira, D., M. C. D. Mansur & D. M. Pimpão, 2012. Identificação e diferenciação dos bivalves lı́mnicos invasores dos
demais bivalves nativos do Brasil. In Mansur, M. C. D., C.
P. Santos, D. Pereira, I. C. P. Paz, M. L. L. Zurita, M. T. R.
Rodriguez, M. V. Nehrke & P. E. A. Bergonci (org), Moluscos Lı́mnicos Invasores no Brasil: Biologia, Prevenção,
Controle. Redes Editora, Porto Alegre: 75–94.
Philippi, R. A., 1847. Abbildungen und Beschreibungen neuer
oder wenig bekannten Conchylien. Cassel, Theodor Fischer.
Pillar, V. & L. D. S. Duarte, 2010. A framework for metacommunity analysis of phylogenetic structure. Ecology Letters
13: 587–596.
Pilsbry, H. A., 1896. New species of fresh water mollusks from
South America. Proceedings of the Academy of Natural
Sciences of Philadelphia 48: 561–570.
Pilsbry, H. A., 1897. New species of mollusks from Uruguay.
Proceedings of Academy of Natural Sciences of Philadelphia 49: 290–298.
Pilsbry, H. A., 1911. Non-marine mollusca of Patagonia. Proceedings of Academy of Natural Sciences Philadelphia 3:
514–611.
Pimpão, D. M. & M. C. D. Mansur, 2009. Chave pictórica para
identificação dos bivalves do baixo rio Aripuanã, Amazonas, Brasil (Sphaeriidae, Hyriidae e Mycetopodidae). Biota
Neotropica 9: 1–8.
Pimpão, D. M., M. S. Rocha & D. C. Fettuccia, 2008. Freshwater mussels of Catalão, confluence of Solimões and
Negro rivers, state of Amazonas, Brazil. Check List 4:
395–400.
Pimpão, D. M., M. C. D. Mansur, P. E. A. Bergonci & C.
R. Beasley, 2012. Comparative morphometry and morphology of glochidial shells of Amazonian Hyriidae
(Mollusca: Bivalvia: Unionida). American Malacological
Bulletin 30: 73–84.
Ricci, C. N., L. C. F. Alvarenga & A. C. S. Coelho, 1990.
Gloquı́deo de Diplodon Spix, 1827: D. (D.) multistriatus
(Lea, 1831) (Mollusca, Bivalvia, Hyriidae). Boletim do
Museu Nacional – Nova Série Zoologia 344: 1–10.
Rumi, A., D. E. G. Gregoric, V. Núñez & G. A. Darrigran, 2008.
Malacologı́a latinoamericana: moluscos de agua dulce de
Argentina. International Journal of Tropical Biology 56:
77–111.
Santos, S. B., S. Thiengo, M. A. Fernandez, I. C. Miyahira, I.
C. B. Gonçalves, R. F. Ximenes, M. C. D. Mansur & D.
Pereira, 2012. Espécies de moluscos lı́mnicos invasores no
Brasil. In Mansur, M. C. D., C. P. Santos, D. Pereira, I. C. P.
Paz, M. L. L. Zurita, M. T. R. Rodriguez, M. V. Nehrke &
P. E. A. Bergonci (org), Moluscos Lı́mnicos Invasores no
Brasil: Biologia, Prevenção, Controle. Redes Editora,
Porto Alegre: 25–49.
Scarabino, F., 2004. Conservación de la malacofauna uruguaya.
Comunicaciones de La Sociedad Malacologica del Uruguay 8: 257–273.
Scarabino, F. & C. Clavijo, 2009. Especies de moluscos prioritarias para la conservación. In: Soutullo, A., E. Alonso, D.
Arrieta, R. Beyhaut, S. Carreira, C. Clavijo, J. Cravino, L.
Delfino, G. Fabiano, C. Fagundez, F. Haretche, E. Marchesi, C. Passadore, M. Rivas, F. Scarabino, B. Sosa & N.
Vidal (eds), Especies Prioritarias para la Conservación en
Uruguay. Proyecto Fortalecimiento del Proceso de Implementación del Sistema Nacional de Áreas Protegidas,
DINAMA, Montevideo, Serie de informes 16.
Scarabino, F. & M. C. D. Mansur, 2007. Lista sistemática de los
Bivalvia dulciacuı́colas viventes de Uruguay. Comunicaciones de La Sociedad Malacologica del Uruguay 9:
89–99.
Serrano, M. A. S., R. S. Tietböhl & M. C. D. Mansur, 1998.
Sobre a ocorrência de moluscos Bivalvia no Pantanal de
Mato Grosso, Brasil. Biociências 6: 131–144.
Simone, L. R. L., 1994. Anatomical characters and sytematics of
Anodontites trapesialis (Lamarck, 1819) from South
America (Mollusca, Bivalvia, Unionoida, Muteloidea).
Studies Neotropical Fauna and Environment 29: 169–185.
Simone, L. R. L., 1997. Anatomy and systematic of Anododontites elongatus (Swainson) from Amazonian and Paraná Basins, Brazil (Mollusca, Bivalvia, Unionoida,
Mycetopodidae). Revista Brasileira de Zoologia 14:
877–888.
Simone, L. R. L., 1999. Anatomy and systematics of Anticorbula fluviatilis (H. Adams, 1860) (Bivalvia: Lyonsiidae)
from the Amazon Basin, Brazil and Peru. The Nautilus
113: 48–56.
Simone, L. R. L., 2006. Land and Freshwater Mollusks of
Brazil. EGB, FAPESP, São Paulo.
Simpson, C. T., 1900. Sinopsis of the naiades or pearly freshwater mussels. Proceedings of the United States National
Museum 22: 501–1044.
Simpson, C. T., 1914. A Descritive Catalogue of the Naiades or
Pearly Freshwater Mussels. Bryant Walker, Michigan.
Souza, J. R. B., C. M. C. Rocha & M. P. R. Lima, 2005. Ocorrência do bivalve exótico Mytilopsis leucophaeta (Conrad) (Mollusca: Bivalvia), no Brasil. Revista Brasileira de
Zoologia 22: 1204–1206.
Sowerby, G. T., 1864. Monograph of the genus Unio. In Reeve, L.
A. (ed.), Conchologia Iconica, Vol. 16. L. Reeve, London.
Sowerby, G. T., 1867. Monograph of the genus Anodon. In
Reeve, L. A. (ed.), Conchologia Iconica, Vol. 17. L. Reeve,
London.
Sowerby, G. T., 1868. Monograph of the genus Mycetopus. In
Reeve, L. A. (ed.), Conchologia Iconica, Vol. 16. L. Reeve,
London.
Sowerby, G. T., 1869a. Monograph of the genus Hyria. In
Reeve, L. A. (ed.), Conchologia Iconica, Vol. 17. L. Reeve,
London.
Sowerby, G. T., 1869b. Monograph of the genus Castalia. In
Reeve, L. A. (ed.), Conchologia Iconica, Vol. 17. Reeve,
London.
Spix, J. B. 1827. In: J. A. Wagner (ed.), Testacea Fluviatilia quae
in Itenere per Brasiliensia Ani MDCCCXVII –
MDCCCXX Collegit et Pigenda Curavit Dr. J.B. Spix,
Digessit Descripsit et Observationibus Illustravit D. J. A.
Wagner. Schrank & Martius, Munich.
Takeda, A. M., M. C. D. Mansur & D. S. Fujita, 2005. Ocorrência de moluscos bivalves em diferentes reservatórios.
In Rodrigues, L., S. M. Thomaz, A. A. Agostinho & L.
C. Gomes (org), Biocenoses em Reservatórios: Padrões
Espaciais e Temporais. RiMa, São Carlos: 161–167.
123
Hydrobiologia
Valdovinos, C. & P. Pedreros, 2007. Geographic variations in
shell growth rates of the mussel Diplodon chilensis from
temperate lakes of Chile: implication for biodiversity
conservation. Limnologica 37: 63–75.
Vaz, J. F., 1986. Hermann von Ihering. Boletim Informativo da
Sociedade Brasileira de Malacologia 60: 13–15.
Veitenheimer, I. L., 1973a. Contribuição ao estudo do gênero Leila Gray, 1840 (Mycetopodidae-Bivalvia). Iheringia
Série Zoologia 42: 64–89.
Veitenheimer, I. L., 1973b. Anodontites Bruguière, 1792 no
Guaı́ba-RS (Bivalvia: Mycetopodidae) I. Anodontites
trapesialis forbesianus (Lea, 1860). Iheringia Série Zoologia 44: 32–49.
Veitenheimer, I. L. & M. C. D. Mansur, 1978a. Morfologia,
histologia e ecologia de Mycetopoda legumen (Martens,
1988) – (Bivalvia, Mycetopodidae). Iheringia Série Zoologia 52: 33–71.
Veitenheimer, I. L. & M. C. D. Mansur, 1978b. Mycetopoda
legumen (Martens, 1988): lası́dio e desenvolvimento parasitário (Bivalvia, Mycetopodidae). Revista Brasileira de
Biologia 38: 531–536.
123
Wächtler, K., M. C. D. Mansur & T. Richter, 2001. Larval types
and early postlarval biology in Naiads (Unionoida). In
Bauer, G. & K. Wächtler (eds), Ecology and Evolotion of
the Freshwater Mussels Unionoida. Springer-Verlag, Berlin: 93–125.
Walker, J. M., J. P. Curole, D. E. Wade, E. G. Chapman, A.
E. Bogan, G. T. Walter & W. R. Hoeh, 2006. Taxonomic
distribution and phylogenetic utility of gender-associated
mitochondrial genomes in the Unionoida (Bivalvia). Malacologia 48: 265–282.
Wares, J. P., & T. F. Turner, 2003. Phylogeography and diversification in aquatic mollusks. In Lydeard, C. & D.
R. Lindberg (ed), Molecular Systematics and Phylogeography of Mollusks: 229–269.
Wesselingh, F. P., 2006. Miocene long-lived lake Pebas as a
stage of mollusc radiations, with implications for landscape
evolution in western Amazonia. Scripta Geologica 133:
1–17.
Wolfe, L. M., 2002. Why alien invaders succeed: Support for the
escape-from-enemy hypothesis. American Naturalist 160:
705–711.