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Review of the Studies of Japanese Entoprocts (Entoprocta)

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Species Diversity of Animals in Japan

Part of the book series: Diversity and Commonality in Animals ((DCA))

Abstract

The study of entoprocts in Japanese waters was begun in 1890 by Asajiro Oka, who described 1 colonial species from central Japan. To date, 30 solitary and 11 colonial species have been reported from the northern subarctic (Hokkaido) to the southern subtropics (Okinawa) of Japan. This chapter provides a review of the diversity of entoprocts in Japan and summarizes interesting aspects of this animal group as revealed by the studies of Japanese entoprocts, such as reproductive strategies, variations and benefits of commensalism, and phylogeny. Current problems of their taxonomy are also discussed.

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References

  • Annandale N (1908) The fauna of brackish ponds at Port Canning, Lower Bengal. Part. VII. Further observations on the Polyzoa with the description of a new genus of Entoprocta. Rec Indian Mus 2:11–19

    Google Scholar 

  • Annandale N (1915) Fauna of the Chilka lake. The polyzoa of the lake and of brackish water in the Gangetic delta. Mem Indian Mus 5:119–134

    Google Scholar 

  • Brien P (1959) Classe des Endoproctes ou Kamptozoaires. In: Grasse P (ed) Traité de Zoologie, vol 5. Masson et Cie, Paris, pp 927–1007

    Google Scholar 

  • Busk G (1886) Report on the polyzoa collected by H.M.S. Challenger. Report on the scientific results of the exploring voyage of H.M.S. Challenger. Zoology 17(3):1–47, pls. 49–10

    Google Scholar 

  • Claparède E (1867) Miscellanées zoologiques. V. Sur le Loxosoma kefersteini n. sp., Bryozoaire mou du Golfe de Naples. Ann Sci Nat Zool 8(5):28–30

    Google Scholar 

  • Cori C (1929) Kamptozoa. In: Krumbach T, Kükenthal W (eds) Handbuch der Zoologie, vol 2. Walter de Gruyter, Berlin, pp 1–64

    Google Scholar 

  • du Bois-Reymond-Marcus E (1957) Neue Entoprocten aus der Gegend von Santos. Zool Anz 159:68–75

    Google Scholar 

  • Dunn CW, Hejnol A, Matus DQ, Pang K, Browne WE, Smith SA, Seaver E, Rouse GW, Obst M, Edgecombe GD (2008) Broad phylogenomic sampling improves resolution of the animal tree of life. Nature (Lond) 452(7188):745–749

    Article  CAS  Google Scholar 

  • Emschermann P (1961) Über Brutkörper bei dem Kamptozoon Barentsia gracilis Sars. Zool Jb Physiol 69:333–338

    Google Scholar 

  • Emschermann P (1969) Ein Kreislauforgan bei Kamptozoen. Z Zellforsch 97:576–607

    Article  CAS  PubMed  Google Scholar 

  • Emschermann P (1971) Loxomespilon perezi—ein Entoproctenfund im Mittelatlantik. Überlegungen zur Benthosbesiedlung der Großen Meteorbank. Mar Biol 9:51–62

    Article  Google Scholar 

  • Emschermann P (1972) Loxokalypus socialis gen. et sp. nov. (Kamptozoa, Loxokalypodidae fam. nov.), ein neuer Kamptozoensystematik. Mar Biol 12:237–254

    Article  Google Scholar 

  • Emschermann P (1982) Les Kamptozoaires. État actuel de nos connaissances sur leur anatomie leur développement, leur biologie et leur position phylogénetique. Bull Soc Zool Fr 107:317–344

    Google Scholar 

  • Emschermann P (1987) Creeping propagation stolons—an effective propagation system of the freshwater entoproct Urnatella gracilis Leidy (Barentsiidae). Arch Hydrobiol 108:439–448

    Google Scholar 

  • Emschermann P (1993) On Antarctic Entoprocta: nematocyst-like organs in a loxosomatid, adaptive developmental strategies, host specificity, and bipolar occurrence of species. Biol Bull 184:153–185

    Article  Google Scholar 

  • Emschermann P (2011) New species, taxonomist’s delight and faunist’s plight. On the variation range in Loxosomella vivipara Nielsen, 1966 (Entoprocta: Loxosomatidae). Zool Meded (Leiden) 85(1):69–77

    Google Scholar 

  • Foettinger A (1887) Sur l’anatomie des Pédicellines de la cote d’Ostende. Arch Biol 7:299–329, pl. 210

    Google Scholar 

  • Fuchs J, Iseto T, Hirose M, Sundberg P, Obst M (2010) The first internal molecular phylogeny of the animal phylum Entoprocta (Kamptozoa). Mol Phylogenet Evol 56(1):370–379

    Article  PubMed  Google Scholar 

  • Harmer SF (1915) Polyzoa of the Siboga Expedition. Part I. Entoprocta, Ctenostomata and Cyclostomata. Siboga Expeditie 28a:1–180, pls 181–112

    Google Scholar 

  • Haszprunar G, Wanninger A (2008) On the fine structure of the creeping larva of Loxosomella murmanica: additional evidence for a clade of Kamptozoa (Entoprocta) and Mollusca. Acta Zool 89(2):137–148

    Article  Google Scholar 

  • Hausdorf B, Helmkampf M, Meyer A, Witek A, Herlyn H, Bruchhaus I, Hankeln T, Struck TH, Lieb B (2007) Spiralian phylogenomics supports the resurrection of Bryozoa comprising Ectoprocta and Entoprocta. Mol Biol Evol 24(12):2723–2729

    Article  CAS  PubMed  Google Scholar 

  • Helm S (1892) Cordylophora lacustris and five forms of animal life. J N Y Microsc Soc 8:43–50

    Google Scholar 

  • Hincks T (1880) A history of the British Marine Polyzoa., 2 vols. Van Voorst, London

    Google Scholar 

  • Hincks T (1884) Contributions towards a general history of the marine Polyzoa. Ann Mag Nat Hist 13(5):356–369, pls. 313–314

    Article  Google Scholar 

  • Honma Y, Kitami T (1978) Fauna and Flora in the western adjacent to the Sado marine biological station, Niigata University. Ann Rep Sado Mar Biol Stat, Niigata Univ 8:7–81

    Google Scholar 

  • Hyman LH (1951) The pseudocoelomate Bilateria–Phylum Entoprocta. In: The invertebrates: Acanthocephala, Aschelminthes, and Entoprocta. The Pseudocoelomate Bilateria, vol 3. McGraw-Hill, New York, pp 521–554

    Google Scholar 

  • Ikeda O, Makino S, Aikawa K (1977) Appearance of fresh-water Entoprocta (Kamptozoa) Urnatella gracilis Leidy in Japan. Proc Jap Soc Syst Zool 13:32–38

    Google Scholar 

  • Iseto T (2001) Three new Loxosomella (Entoprocta: Loxosomatidae) from coral reef shore in Okinawa, Ryukyu Archipelago, Japan. Zool Sci 18(6):879–887. doi:10.2108/Zsj.18.879

    Article  Google Scholar 

  • Iseto T (2002) Loxocorone, a new genus of the family Loxosomatidae (Entoprocta : Solitaria), with descriptions of two new Loxomitra (sensu stricto) and a new Loxocorone from Okinawa, the Ryukyu Archipelago, Japan. Zool Sci 19(3):359–367. doi:10.2108/Zsj.19.359

    Article  PubMed  Google Scholar 

  • Iseto T (2003) Four new solitary entoprocts (Entoprocta: Loxosomatidae) from Okinawa Island, the Ryukyu Archipelago, Japan. Proc Biol Soc Wash 116(4):1007–1020

    Google Scholar 

  • Iseto T (2005a) Where loxosomatids live? Understanding the habitat preference of loxosomatid entoprocts. Iden 59(1):15–18 [in Japanese]

    Google Scholar 

  • Iseto T (2005b) A review of non-commensal loxosomatids: collection, culture, and taxonomy, with new implications to the benefit of commensalism (Entoprocta: Loxosomatidae). In: Moyano HI, Cancino JM, Wyse Jackson PN (eds) Bryozoan studies 2004. Taylor & Francis, London, pp 133–140

    Chapter  Google Scholar 

  • Iseto T (2006) Two new non-commensal loxosomatids (Entoprocta: Loxosomatidae) from Okinawa and Sesoko Islands, Ryukyu Archipelago, Japan. Species Divers 11(1):33–43

    Google Scholar 

  • Iseto T, Hirose E (2010) Comparative morphology of the foot structure of four genera of loxosomatidae (Entoprocta): implications for foot functions and taxonomy. J Morphol 271(10):1185–1196. doi:10.1002/Jmor.10863

    Article  PubMed  Google Scholar 

  • Iseto T, Yokuta Y, Hirose E (2007) Seasonal change of species composition, abundance, and reproduction of solitary entoprocts in Okinawa Island, the Ryukyu Archipelago, Japan. Mar Biol 151(6):2099–2107

    Article  Google Scholar 

  • Iseto T, Sugiyama N, Hirose E (2008) A new sponge-inhabiting Loxosomella (Entoprocta: Loxosomatidae) from Okinawa Island, Japan, with special focus on foot structure. Zool Sci 25(11):1171–1178. doi:10.2108/Zsj.25.1171

    Article  PubMed  Google Scholar 

  • Ishii T (1997) Sessile organisms in Lake Hachiro: Urnatella gracilis, a freshwater kamptozoan, and two species of freshwater bryozoans, first record occurring in Akita Prefecture. Mem Fac Educ Hum Stud Akita Univ (Nat Sci) 52:65–71

    Google Scholar 

  • Johnston G (1847) A history of the British zoophytes, vol 1. Van Voorst, London

    Google Scholar 

  • Kajihara H, Tomioka S, Kakui K, Iseto T (2015) Phylogenetic position of the queer, backward-bent entoproct Loxosoma axisadversum (Entoprocta: Solitaria: Loxosomatidae). Species Divers 20:83–88

    Article  Google Scholar 

  • Keferstein W (1862) Ueber Loxosoma singulare gen. et sp. n., den Schmarotzer einer Annelide. Z Wiss Zool 12:131–132, pl. 111

    Google Scholar 

  • Kikuchi T (1968) Faunal list of the Zostera marina belt in Tomioka Bay, Amakusa, Kyushu. Pub Amakusa Mar Biol Lab Kyushu Univ 1:163–192

    Google Scholar 

  • Kirkpatrick R (1890) Reports on the zoological collections made in Torres Straits by Professor A.C. Haddon, 1888–1889. Hydroida and Polyzoa. Sci Proc R Dublin Soc New Series 6:603–626

    Google Scholar 

  • Kluge HA (1946) Kamptozoa from the Arctic Ocean. Trav Dreifuyush Arctic Expedition of the Ice-breaker “G Sedov” in the years 1937–1940. 3:149–157

    Google Scholar 

  • Konno K (1971) On some Entoprocts found at Fukaura, Aomori Prefecture. Rep Fukaura Mar Biol 3:2–9

    Google Scholar 

  • Konno K (1972) Studies on Japanese Entoprocta. I. On four new species of loxosomatids found at Fukaura, Aomori Prefecture. Sci Rep Hirosaki Univ 19:22–36

    Google Scholar 

  • Konno K (1973a) Studies on Japanese Entoprocta. II. On a new species of Loxosoma and Loxosomella akkesiensis (YAMADA) from Fukaura. Sci Rep Hirosaki Univ 20:79–87

    Google Scholar 

  • Konno K (1973b) A preliminary list of marine animals found in the vicinity of the Fukaura Marine Biological Laboratory. Rep Fukaura Mar Biol 5:2–7

    Google Scholar 

  • Konno K (1974) Studies on Japanese Entoprocta. III. On Loxosoma cubitus sp. nov. from Fukaura. Sci Rep Hirosaki Univ 21:67–70

    Google Scholar 

  • Konno K (1975) Studies on Japanese Entoprocta. V. On Loxosomella pistilli sp. nov. found in the tube of Palola sciliensis (GRUBE). Sci Rep Hirosaki Univ 22:79–81

    Google Scholar 

  • Konno K (1976) Studies on Japanese Entoprocta. VI. Three new loxosomatids found at Fukaura. Sci Rep Hirosaki Univ 23:43–49

    Google Scholar 

  • Konno K (1977a) Studies on Japanese Entoprocta. IV. Loxosoma vatilli sp. nov. and its dimorphism. Proc Jap Soc Syst Zool 13:24–31

    Google Scholar 

  • Konno K (1977b) Studies on Japanese Entoprocta. VII. On two new species of Loxosomatidae. Sci Rep Hirosaki Univ 24:81–84

    Google Scholar 

  • Konno K (1978) Studies on Japanese Entoprocta VIII. Survey of Japanese Kamptozoan Fauna (1). J Aomori-Ken Biol Soc 16:21–29

    Google Scholar 

  • Konno K (1985) Studies on Japanese Entoprocta IX. Survey of Japanese Kamptozoan Fauna (2). Rep Fukaura Mar Biol 11:5–7

    Google Scholar 

  • Konno K (1990a) Studies on Japanese Entoprocta X. Preliminary notes on the regeneration and the mode of colonization of the entoproct, Barentsia discreta (Busk). Rep Fukaura Mar Biol 13:16–19

    Google Scholar 

  • Konno K (1990b) Shore fauna of Shiriuchi, Mastumae Peninsula, Hokkaido. Rep Fukaura Mar Biol 13:20–21

    Google Scholar 

  • Laumer CE, Bekkouche N, Kerbl A, Goetz F, Neves RC, Sørensen MV, Kristensen RM, Hejnol A, Dunn CW, Girbet G, Worsaae K (2015) Spiralian phylogeny informs the evolution of microscopic lineages. Curr Biol 25(15):2000–2006

    Article  CAS  PubMed  Google Scholar 

  • Leidy J (1851) On some American freshwater Polyzoa. Proc Acad Nat Sci Phila 5:320–322, pl. 321

    Google Scholar 

  • Mortensen T (1911) A new species of Entoprocta, Loxosomella antedonis, from North-east Greenland. Medd Grønland 45(7):399–406, pl. 326

    Google Scholar 

  • Mukai H, Makioka T (1978) Studies on the regeneration of an entoproct, Barentsia discreta. J Exp Zool 205:261–276

    Article  Google Scholar 

  • Mukai H, Makioka T (1980) Some observations on the sex differentiation of an entoproct, Barentsia discreta (Busk). J Exp Zool 213:45–59

    Article  Google Scholar 

  • Nielsen C (1964) Studies on Danish Entoprocta. Ophelia 1:1–76

    Article  Google Scholar 

  • Nielsen C (1971) Entoproct life-cycles and the entoproct/ectoproct relationship. Ophelia 9:209–341

    Article  Google Scholar 

  • Nielsen C (1989) Entoprocts, vol 41. Synopses of British Fauna (New Series). The Linnean Society of London & The Estuarine and Brackish-Water Sciences Association

    Google Scholar 

  • Nielsen C (1996) Three new species of Loxosoma (Entoprocta) from Phuket, Thailand, with a review of the genus. Zool Scr 25(1):61–75

    Article  Google Scholar 

  • Nielsen C (2010) A review of the taxa of solitary entoprocts (Loxosomatidae). Zootaxa 2395:45–56

    Google Scholar 

  • Nielsen C (2012) Animal evolution, 3rd edn. Oxford University Press, New Yolk

    Google Scholar 

  • Nielsen C, Ryland JS (1961) Three new species of Entoprocta from West Norway. Sarsia 1(1):39–45

    Article  Google Scholar 

  • Nitsche H (1870) Beiträge zur Kenntniss der Bryozoen. Z Wiss Zool 20:1–36, pls. 31–33

    Google Scholar 

  • Oda S (1982) Urnatella gracilis, a freshwater kamptozoan, occurring in Japan. Annot Zool Jpn 55(3):151–166

    Google Scholar 

  • O’Donoghue CH (1924) The Bryozoa (Polyzoa) collected by the S. S. “Pickle”. Rep Fish Mar Biol Surv South Afr 3(10):1–63, pls. 61–64

    Google Scholar 

  • Oka A (1890) Entoproct polyzoa from Misaki, Japan. Doubutsugaku Zasshi 2(20):233–237

    Google Scholar 

  • Oka A (1895) Sur la Barentsia misakiensis. Zool Mag 7(78):76–86, pl. 12

    Google Scholar 

  • Okada Y, Mawatari S (1938) On the collection of Bryozoa along the coast of Wakayamaken, the middle part of Honsyu, Japan. Annot Zool Jpn 17:445–462, pl. 424

    Google Scholar 

  • Pallas PS (1774) Spicilegia zoologica quibus novae imprimis et obscurae animalium species iconibus, descriptionibus atque commentariis illustrantur, vol 1(10)

    Google Scholar 

  • Paps J, Baguñà J, Riutort M (2009) Lophotrochozoa internal phylogeny: new insights from an up-to-date analysis of nuclear ribosomal genes. Proc R Soc Lond B Biol Sci 276:1245–1254. doi:10.1098/rspb.2008.1574

    Article  CAS  Google Scholar 

  • Passamaneck Y, Halanych KM (2006) Lophotrochozoan phylogeny assessed with LSU and SSU data: evidence of lophophorate polyphyly. Mol Phylogenet Evol 40(1):20–28

    Article  CAS  PubMed  Google Scholar 

  • Robertson A (1900) Studies in Pacific Coast Entoprocta. Proc Calif Acad Sci 2(3):323–348, pl. 316

    Google Scholar 

  • Ryland JS (1961) The occurrence of Pseudopedicellina mutabilis Toriumi (Entoprocta) in British waters, with a note on Pedicellina nutans Dalyell. Ann Mag Nat Hist 13(3):377–383

    Google Scholar 

  • Ryland JS (1965) Some New Zealand Pedicellinidae (Entoprocta), and a species new to Europe. Trans R Soc N Z Zool 6(19):189–205

    Google Scholar 

  • Ryland JS, Austin AP (1960) Three species of Kamptozoa new to Britain. Proc Zool Soc Lond 133:423–433

    Article  Google Scholar 

  • Salensky M (1877) Etudes sur les Bryozoaires Entoproctes. Ann Sci Nat Zool Ser 6 5(3):1–60, pls.12–15

    Google Scholar 

  • Salvini-Plawen LV (1968) Neue Formen im marinen Mesopsammon: Kamptozoa und Aculifera. Ann Naturhist Mus Wien 72:231–272, pls. 231–239

    Google Scholar 

  • Sars M (1835) Beskrivelser og iagttagelser over nogle mærkelige eller nye i havet ved den bergenske kyst levende dyr af polypernes, acalephernes, radiaternes, annelidernes, og molluskernes classer. Thorstein Hallager, Bergen

    Book  Google Scholar 

  • Schmidt O (1875) Die Gattung Loxosoma. Arch Mikr Anat 12:1–14, 13 plates

    Article  Google Scholar 

  • Seshaiya RV (1947) On Urnatella indica Seshaiya, a freshwater entoproctan from South India. Rec Indian Mus 45(4):283–289

    Google Scholar 

  • Struck TH, Wey-Fabrizius AR, Golombek A, Hering L, Weigert A, Bleidorn C, Klebow S, Iakovenko N, Hausdorf B, Petersen M, Kuck P, Herlyn H, Hankeln T (2014) Platyzoan paraphyly based on phylogenomic data supports a noncoelomate ancestry of spiralia. Mol Biol Evol 31(7):1833–1849

    Article  CAS  PubMed  Google Scholar 

  • Sugiyama N, Iseto T, Hirose M, Hirose E (2010) Reproduction and population dynamics of the solitary entoproct Loxosomella plakorticola inhabiting a demosponge, Plakortis sp. Mar Ecol Prog Ser 415:73–82. doi:10.3354/meps08747

    Article  Google Scholar 

  • Toriumi M (1944) Brackish-water Bryozoa (in Japanese). Zool Mag 56:20–25

    Google Scholar 

  • Toriumi M (1949) On some Entoprocta from Japan. Sci Rep Tohoku Univ 4th Ser (Biol) 18:223–227

    Google Scholar 

  • Toriumi M (1951) Some entoprocts found in Matsushima Bay. Sci Rep Tohoku Univ 4th Ser (Biol) 19:17–22

    Google Scholar 

  • Toriumi M (1977) Invertebrates in the regulating reservoir of Lake Hachiro. Rep. Res. Group of the fauna in the regulating reservoir of Lake Hachiro, Sendai

    Google Scholar 

  • Wanninger A, Fuchs J, Haszprunar G (2007) Anatomy of the serotonergic nervous system of an entoproct creeping-type larva and its phylogenetic implications. Invertebr Biol 126(3):268–278

    Article  Google Scholar 

  • Wasson K (1997a) Systematic revision of colonial kamptozoans (entoprocts) of the Pacific Coast of North America. Zool J Linn Soc 121(1):1–63

    Article  Google Scholar 

  • Wasson K (1997b) Sexual modes in the colonial kamptozoan genus Barentsia. Biol Bull 193:163–170

    Article  Google Scholar 

  • Wasson K (1998) Sexual reproduction in the colonial kamptozoan Barentsia hildegardae. Invertebr Biol 117(2):123–128

    Article  Google Scholar 

  • Wasson K (2002) A review of the invertebrate phylum Kamptozoa (Entoprocta) and synopsis of kamptozoan diversity in Australia and New Zealand. Trans R Soc S Aust 126(1):1–20

    Google Scholar 

  • Wasson K, Holle BV, Toft J, Ruiz G (2000) Detecting invasions of marine organisms: kamptozoan case histories. Biol Invasions 2:59–74

    Article  Google Scholar 

  • Wood TS (2005) Loxosomatoides sirindhornae, new species, a freshwater kamptozoan from Thailand (Entoprocta). Hydrobiologia 544(1):27–31

    Article  Google Scholar 

  • Yamada M (1956) The fauna of Akkeshi Bay XXIV. Entoprocta. J Fac Sci Hokkaido Univ Ser VI Zool 2(3):237–243

    Google Scholar 

  • Yokobori S, Iseto T, Asakawa S, Sasaki T, Shimizu N, Yamagishi A, Oshima T, Hirose E (2008) Complete nucleotide sequences of mitochondrial genomes of two solitary entoprocts, Loxocorone allax and Loxosomella aloxiata: implications for lophotrochozoan phylogeny. Mol Phylogenet Evol 47(2):612–628

    Article  CAS  PubMed  Google Scholar 

  • Zambriborshch FS (1958) Representative of an invertebrate class–Kamptozoa–new for the fresh waters of the USSR (Urnatella dnjestriensis, sp. n.). Zool Zh 37(11):1741–1743

    Google Scholar 

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  1. Center for Earth Information Science and Technology (CEIST), Japan Agency for Marine-Earth Science and Technology (JAMSTEC), 3173-25, Showa-machi, Kanazawa-ku, Yokohama, 236-0001, Japan

    Tohru Iseto

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  1. The Kyoto University Museum, Kyoto University, Sakyo-ku, Kyoto, Japan

    Masaharu Motokawa

  2. Faculty of Science, Hokkaido University, Sapporo, Hokkaido, Japan

    Hiroshi Kajihara

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Iseto, T. (2017). Review of the Studies of Japanese Entoprocts (Entoprocta). In: Motokawa, M., Kajihara, H. (eds) Species Diversity of Animals in Japan. Diversity and Commonality in Animals. Springer, Tokyo. https://doi.org/10.1007/978-4-431-56432-4_17

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