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Kliopsyllus minor sp. nov. Male. (A, B) Mandible, different views (holotype); (C) Maxillula (paratype), enp and exp broken off (dotted regions); (D) Maxillula (holotype), enp and exp hidden behind basis (see description); (E) Maxilla, enp broken off (dotted region), basis damaged (paratype); (F) Maxilla (holotype). Scale bar = 0.02 mm.
Source publication
Sediment samples were collected from the deep sea adjacent to the State of Sergipe (Northeastern Brazil) within the framework of the Sergipe Continental Slope Environmental Characterization Project (coordinated by PETROBRAS, the Brazilian Petroleum Company S/A). These revealed a new species of the family Paramesochridae (Copepoda, Harpacticoida). K...
Contexts in source publication
Context 1
... endite armed with 5 slender, naked setae. Enp and exp broken off in holotype. Enp in paratype with 4 slender naked setae (Fig. 4D, behind basis), exp hidden behind ...
Context 2
... (Figs. 4E and F). Praecoxa and coxa fused to form a syncoxa bearing 3 endites. No separation towards basis visible. Proximal endite slightly bilobed, 2 setal elements on proximal lobe, 3 on distal lobe. Middle endite with 3 naked setae. Distal endite with 3 setal elements, one of which spinulose. Basis with 3 strong, naked setae. Enp 2-segmented with ...
Citations
... Less common habitats include the intertidal zone and, with few adapted species, deep sea muds (e.g. Vasconcelos et al. 2009;Kottman et al. 2013). Most species are minute in size, with extremely reduced appendages (Cottarelli & Forniz 1994;Boxshall & Halsey 2004) and such miniaturization is related to their life in the interstitial habitat . ...
We propose and describe a new genus of interstitial Paramesochridae, Maliithipon gen. nov., to accommodate three species. Maliithipon wellsi sp. nov., type species of the genus, is described based on specimens collected in two sandy beaches in Isla Verde, the Philippines. Apodopsyllus aberrans Mielke, 1984a described from Panama, is allocated to the herein erected genus as Maliithipon aberrans (Mielke, 1984a) comb. nov. Maliithipon cf. aberrans is described, based on specimens collected in the Azores and previously identified as Apodopsyllus aberrans. The new genus is characterized by several distinct morphological features: mandible with uniramous, 2-segmented palp and gnathobase with thin and pointed teeth; maxillule with reduced armature, lacking endopod and exopod; maxilla large, with three syncoxal endites and endopod with reduced setal number; P5 very reduced in both sexes; caudal rami with six setae, two of which (setae III and VI) transformed; pseudoperculum well-developed, with four-lobed distal margin. The new genus is included in the subfamily Paramesochrinae Lang, 1944 and in the genus-group Scottopsyllus (sensu Huys, 1987). It has strong affinities with Leptopsyllus (Leptopsyllus) platyspinosus Mielke, 1984b and Wellsopsyllus (Intermediopsyllus) smirnovi (Kunz, 1992), which are considered as species inquirendae in this paper. Some remarks on the ecology and geonemy of the three studied species are provided. We also list the accompanying Paramesochridae obtained from the two new collecting sites of the genus, and all the genera of Paramesochridae recorded from other sites in the Philippines during the same survey.
... We concur with Veit-Köhler (2004, 2005) that a proper phylogenetic analysis at species level of the Paramesochra-group is long overdue and will undoubtedly alter the taxonomic concepts of and relationships between the genera included in it. In addition, Vasconcelos et al. (2009) found the new species, E. minor, to have an intermediate endopodal segmentation pattern of P4 without anal projections in the deep sea. However, not all of these characters are apomorphic states and at least some of them have evolved convergently in other genera and consequently are not autapomorphic for Paramesochra. ...
Three new species of Paramesochridae are described from the subtidal zone off Pungdo Island, west coast of Korea. Paramesochra parasimilis sp. nov. is closely related to Paramesochra similis. However, the new species is clearly distinguished by the characteristic seta IV of the caudal rami. Paramesochra pungdoensis sp. nov is characterized by five setae in antennary exopod and seta IV, which is longer than the caudal ramus. Paramesochra mirabilis sp. nov. has a laterally bent caudal seta V in the female. These three new species are placed in the dubia-group by the inner seta on the endopod of leg 3 and leg 4. Also, a redescription of Paramesochra similis Kunz, 193610.
Kunz , H. 1936. Neue Harpacticoiden (Crustacea Copepoda) von Helgoland (Vorlaufige Mitteilung). Kieler Meeresforsch., 15: 352–358. View all references is provided, and an updated key to the species of Paramesochra is suggested. http://www.zoobank.org/urn:lsid:zoobank.org:pub:F017D873-6A34-4976-A7EA-589038E1A9A3
... Although the family Paramesochridae (Copepoda: Harpacticoida) is known to have successfully entered the deep sea (Becker 1979;Veit-Köhler 2004, 2005Gheerardyn and Veit-Köhler 2009;Plum and George 2009;Vasconcelos et al. 2009;Veit-Köhler and Drewes 2009), the great majority of this group typically inhabits the mesopsammic environment of subtidal and intertidal sandy substrates (Boxshall and Halsey 2004), which they colonized either by miniaturization (e.g. Paramesochra T. Scott, 1892;Emertonia Wilson, 1932;Kunzia Wells, 1967) or by adopting a vermiform body shape (e.g. ...
A new species of Remanea Klie, 192935.
Klie , W. 1929. Die Copepoda Harpacticoida der südlichen und westlichen Ostsee mit besonderer Berücksichtigung der Sandfauna der Kieler Bucht. Zool Jb Syst., 57: 197–386. View all references (Copepoda: Harpacticoida: Paramesochridae) is described from a brackish water habitat near Naksan beach on the east coast of Korea, representing the third species of the genus. The new species was assigned to the genus Remanea on the basis of the well-developed rostrum, the eight-segmented female antennule, the two-segmented antennary exopod and the three-segmented P1 exopod. Remanea naksanensis sp. nov. is most closely related to the type species, Remanea arenicola Klie, 192935.
Klie , W. 1929. Die Copepoda Harpacticoida der südlichen und westlichen Ostsee mit besonderer Berücksichtigung der Sandfauna der Kieler Bucht. Zool Jb Syst., 57: 197–386. View all references, sharing the same armature formula of the swimming legs and the previously overlooked sexual dimorphism on the distal endopodal segment of P3. The new species can be distinguished from its congeners primarily by the morphology of the P5 in both sexes, and setal length differences in the P1 endopod and caudal rami. A brief redescription of R. arenicola is provided based on Klie's original type slide material. The distribution records of all three species are summarized and an updated identification key to species is presented. Partial sequences of the mitochondrial gene COI (cytochrome c oxidase subunit I) of R. naksanensis were obtained and submitted to GenBank.
... Although the family Paramesochridae (Copepoda: Harpacticoida) is known to have successfully entered the deep sea (Becker 1979;Veit-Köhler 2004, 2005Gheerardyn and Veit-Köhler 2009;Plum and George 2009;Vasconcelos et al. 2009;Veit-Köhler and Drewes 2009), the great majority of this group typically inhabits the mesopsammic environment of subtidal and intertidal sandy substrates (Boxshall and Halsey 2004), which they colonized either by miniaturization (e.g. Paramesochra T. Scott, 1892;Emertonia Wilson, 1932;Kunzia Wells, 1967) or by adopting a vermiform body shape (e.g. ...
A new species of Remanea Klie, 1929 (Copepoda: Harpacticoida: Paramesochridae) is described from a brackish water habitat near Naksan beach on the east coast of Korea, representing the third species of the genus. The new species was assigned to the genus Remanea on the basis of the well-developed rostrum, the eight-segmented female antennule, the two-segmented antennary exopod and the three-segmented P1 exopod. Remanea naksanensis sp. nov. is most closely related to the type species, Remanea arenicola Klie, 1929, sharing the same armature formula of the swimming legs and the previously overlooked sexual dimorphism on the distal endopodal segment of P3. The new species can be distinguished from its congeners primarily by the morphology of the P5 in both sexes, and setal length differences in the P1 endopod and caudal rami. A brief redescription of R. arenicola is provided based on Klie's original type slide material. The distribution records of all three species are summarized and an updated identification key to species is presented. Partial sequences of the mitochondrial gene COI (cytochrome c oxidase subunit I) of R. naksanensis were obtained and submitted to GenBank.
... Members of this family show a wide geographical distribution and are typically small, interstitial animals that inhabit intertidal and shallow-water sandy sediments. Only a few species have been recorded at depths greater than 300 m (Lang 1936;Drzycimski 1967;Becker 1972;Becker et al. 1979;Veit-Köhler 2004Veit-Köhler and Drewes 2009;Vasconcelos et al. 2009). This leads to the essential question of how species of a typically interstitial taxon could settle on the Great Meteor Seamount, considering the large distance to the nearest coast and the assumption that fine-grained clayish bottoms in the deep sea may preclude dispersal of interstitial meiofauna adapted to coarse sand (Westheide 1991;Gad and Schminke 2004). ...
Because of their potentially important role for the distribution of marine benthic organisms, seamounts have been the subject
of focused interest on the part of marine biologists particularly during the past decade. One of the largest seamounts sampled
so far is the Great Meteor Seamount (GMS), which is located in the North Atlantic. Although some of the most detailed investigations
have been carried out on this particular seamount, it is still a little-known environment regarding benthic copepod diversity
and ecology. Therefore, material from 14 stations collected in 1998 was investigated to address the following aspects: (1)
species composition and diversity of the harpacticoid family Paramesochridae at the GMS; (2) faunistic comparison with other
localities and Intermedopsyllus; and (3) revision of the worldwide distribution of known Paramesochridae. Of the 28 paramesochrid species determined from
the GMS, 26 are new to science. The vast majority were found on the plateau; only two species were detected in the deep-sea
stations. Other species found at the GMS are already known from East Atlantic deep-sea areas. In the frame of providing new
taxonomical information for future research, Scottopsyllus (Intermedopsyllus) antoniae sp. nov. from the plateau of the GMS is described here. The new species can without any doubt be allocated to Scottopsyllus because of the 1-segmented endopods but 3-segmented exopods in P2–P3, the “paramecium”-like shape of P2–P3 endopods, and
the 1-segmented exopods in the antenna and the mandible. The new species differs from its congeners mainly by retention of
setae on the antennule, the reduced size of furcal seta VI, the fact that the proximal maxillar endite bears only 1 seta,
and the loss of the maxillar endopod.
... Recently, K. andeep was described from the Weddell Sea Abyssal Plain (VeitKö hler, 2004), and K. diva and K. schminkei were described from the Angola Basin (Veit-Kö hler, 2005; Veit-Kö hler and). All other species of Paramesochridae have been described from intertidal to shallow subtidal marine sediments (Bodin, 1997) or from the continental slope (Vasconcelos et al., 2009). ...
... The forthcoming investigation of the southwestern Atlantic deep-sea basins during the 2009 DIVA-3 cruise may reveal whether the mid-Atlantic Ridge is a barrier for these animals. There is already evidence that the genus Kliopsyllus is represented in Brazilian deep waters (Vasconcelos et al., 2009), but the species involved differs from those found in our study. Our study indicates that harpacticoid species ranges may span thousands of kilometers across South Atlantic and Southern Ocean abyssal plains. ...
Multicorer samples for meiofaunal study were obtained within the framework of the international project CeDAMar, at 21 stations occupied during the DIVA and ANDEEP campaigns (2000, 2002 and 2005) to the southern Atlantic Ocean (Guinea, Angola and Cape Basins) and the Southern Ocean (Weddell and Scotia Seas), respectively. A total of 311 adult Paramesochridae Lang, 1944 (Copepoda, Harpacticoida) was extracted from 437 cores obtained during 83 deployments of the corer at depths between 1107 and 5655 m. All specimens were determined to species based on morphological characteristics. They belonged to 19 species and four genera (Kliopsyllus Kunz, 1962, Leptopsyllus T. Scott, 1894, Paramesochra T. Scott, 1892 and Scottopsyllus Kunz, 1962). Eleven species were restricted to single regions, whereas the others showed a much wider distribution. For example, Kliopsyllus andeep Veit-Köhler, 2004 and Kliopsyllus diva Veit-Köhler, 2005, were both collected from Guinea, Angola and Weddell Abyssal Plains, and Kliopsyllus schminkei Veit-Köhler & Drewes, 2009 occurred in the three West-African basins. This study provides a first insight into the large-scale biogeography of deep-sea harpacticoids, represented by the Paramesochridae, and indicates that distribution ranges, at least in this family, may extend across South Atlantic and Southern Ocean Abyssal Plains.
Deep-sea harpacticoid copepods are poorly known worldwide. Due to sampling difficulties, these organisms are seldom captured. Recent investigation, however, has allowed for the discovery of many new species and genera in diverse regions of the Americas. The deep-water harpacticoid fauna from the Americas is reviewed, including their distribution and some aspects of their ecology. Information related to the occurrence of each species is provided and discussed in a regional context.KeywordsBenthic copepodsDiversityDistribution
Two new species of the genus Emertonia were found from the west coast of Korea. The first new species, E. koreana sp. n., is closely related to E. acutifurcata. However, the new species is clearly distinguished by the presence of two modified pinnate setae on the P5 baseoendopodal lobe. All body somites of the new species except for the last two urosomites have strongly developed hyaline frills forming quadrilateral lappets. The second new species, E. simplex sp. n., superficially resembles E. mielkei in the structure of antennary exopod (with five setae), and the shape of P5. However, this new species differs from its congener mainly by having a caudal ramus 3.5 times as long as width, and P1 enp-2 with two claw-like setae. In addition, a key to the worldwide species of Emertonia is provided.
The coral reefs of Porto de Galinhas Beach (Pernambuco, Brazil, Northeast region) are among the most important tourist destinations in the country. However, this ecosystem is being increasingly threatened by impacts related to tourism. A first list of the Harpacticoida species found in the phytal of these reefs is provided here. The total of 1501 individuals analyzed included 42 species belonging to 13 families and 32 genera. The dominant species were Parastenhelia spinosa, Amphiascoides sp., Robertsonia knoxi, Ameira parvula, Paralaophonte congenera congenera and Amphiascopsis cinctus. First records for the Brazilian coast include the subspecies Nitocra affinis californica and nine species: Nannomesochra arupinensis, Cletodesaff. pseudodissimilisoris, Esola lobata, Paralaophonte congenera (sensu Yeatman 1962), Sarsamphiascus parvus (sensu Rouch 1962), Rhyncholagena littoralis, Stenheliagibba, Alteutha roeae and Xouthouspurpurocinctus. The high diversity and the isocommunity hypothesis are discussed.
We describe a new species of the genus Paramesochra that was found in sandy sediments off Taean on the west coast of Korea during a study of interstitial harpacticoid copepods. Paramesochra taeana, sp. nov. superficially resembles P. acutata hawaiiensis Kunz, 1981, in the structure of the antenna, shape of the caudal rami, and seta formulae of thoracopods P1–P4. However, the new species was clearly distinguishable from P. acutata hawaiiensis by a combination of characteristics. With the exception of the last two somites, the new species is the only species in the genus that has well-developed hyaline frills on all of the body segments. The female displays eight-segmented antennules, and the median incision between both plates of its baseoendopod reaches about to the proximal line of the exopod in P5. Lastly, in males the baseoendopodal plate has a deeper median incision in P5. An updated key for species of the genus Paramesochra is provided.
