Abstract
This report provides a checklist of the echiuran fauna of the Indo-West Pacific Ocean and analyses their distribution in relation to general biogeographic regions. Currently the echiuran fauna of the Indo-West Pacific comprises three families, 30 genera and 103 species. The family Bonelliidae contains 43 species in 21 genera; the Echiuridae is represented by eight genera and 58 species, and the Urechidae by two species, Urechis novaezealandiae (Dendy) and U. unicinctus (von Drasche). Investigations undertaken on this group of animals after the publication of the monograph by Stephen & Edmonds (1972) on the phyla Sipuncula and Echiura have revealed one new genus, 15 new species and several new records. This study shows that the Indo-Pacific has a high species diversity, comprising about 62% of the known world fauna. The West Indian Ocean is currently represented by 28 species; 55 species have been recorded in the Central Indo-West Pacific and 53 species in the West Pacific. Only four species are thought to be cosmopolitan while approximately 50 species appear to be endemic to the Indo-West Pacific Ocean. Members of the Echiuridae are usually found in shallow-waters of littoral and subtidal zones while bonelliids are inhabitants of deeper bottoms where cold temperatures prevail.
References
Annandale, N. & Kemp, S. (1915) Fauna of the Chilka Lake. Echiuroidea of the lake and the Gangetic Delta. Memoirs of the Indian Museum, 5, 55–63.
Biseswar, R. (1984) A key to the species of Anelassorhynchus (Echiura) with a description of a new species from the east coast of southern Africa. African Journal of Zoology, 19(1), 16–21.
Biseswar, R. (1985) The geographic distribution of Echiura from southern Africa. South African Journal of Marine Science, 3, 11–21.
Biseswar, R. (1998a) Ochetostoma (Echiura) from southern Africa with a description of a new species. Annals of the South African Museum, 98(2), 29–75.
Biseswar, R. (1988b) Thalassema (Echiura) from southern Africa with the description of a new species. South African Journal of Zoology, 23(2), 81–91.
Biseswar, R. (1997a) A new record of a deep-sea echiuran (phylum: Echiura) from the east coast of southern Africa. South African Journal of Zoology, 32(2), 53–55.
Biseswar, R. (1997b) A new record of the echiuran Echiurus echiurus (Pallas, 1767) from the east coast of southern Africa. South African Journal of Marine Science, 18, 305–308.
Biseswar, R. & Moodley, L.G. (1989) The proposed transfer of the echiuran Ochetostoma capense to the genus Listriolobus.South African Journal of Zoology, 24(4), 337–339.
Briggs, J.C. (1974) Marine Zoogeography. McGraw – Hill, New York. 475pp.
DattaGupta, A.K. & Menon, P.K.B. (1961) Miscellaneous notes. Occurrence of the echiuroid Ochetostoma zanzibarense Stephen in the Gulf of Kutch. Journal of Bombay natural History Society, ser, 3, (48), 829–830.
DattaGupta, A.K. & Menon, P.K.B. (1964) Morphology and histology of the males of Acanthobonellia. Proceedings of the Royal Society of Edinburgh, 68, 267–276.
DattaGupta, A.K. & Menon P.K.B. (1965) Additions to the Indian echiuroid fauna. Annals and Magazine of Natural History, ser, 13, (8), 193–201.
DattaGupta, A.K. & Menon, P.K.B. (1971) Anatomical notes on four species of Ochetostoma Leuckart & Rüppell (Echiura) together with a list of the species of the genus. Record of the Zoological Survey of India, 65(1–4), 173–182.
DattaGupta, A.K., Menon, P.K.B. & Johnson, P. (1963) Echiurids from Indian waters with the description of two new species. Annals and Magazine of Natural History, (13) 6(1), 57–63.
Edmonds, S.J. (1960) Some Australian Echiuroids (Echiuroidea). Transactions of the Royal Society of South Australia, 83, 89–96.
Edmonds, S.J. (1963) Two new echiuroids (Echiuroidea) from Australia. Transactions of the Royal Society of Australia, 87, 243–247.
Edmonds, S.J. (1987) Echiurans from Australia (Echiura). Records of the South Australian Museum, 32 (2), 119–138.
Fischer, W. (1892) Übersicht der von Herrn Dr. F. Stuhlmann auf Sanzibar und an der gegenüberliegenden Festlands–Küste gesammelten Gephyreen. Jahrbuch der Hamburgischen Wissenschaftlichen Anstalten, 9 (2), 79–89.
Fisher, W.K. (1946) Echiuroid worms of the North Pacific Ocean. Proceedings of the United States National Museum, 96 (3198), 215–292.
Haldar, B.P. & DattaGupta, A.K. (1991) Fauna of Lahshadweep. Record of the Zoological Survey of India, ser. 2, 185–197.
Ikeda, I. (1904) The gephyrea of Japan. Journal of the College of Sciences, Imperial University, Tokyo. 20 (4), 1–87.
Ikeda, I. (1905a) Gephyreans collected by Prof. Dean at Manjuyodi, Southern Negros (Philippine Islands). Annotationes zoologicae japonenses, 5, 169–174.
Ikeda, I. (1905b) Key to the genera of Sipunculoidea and Echiuroidea found in Japan. The Zoological Magazine, Tokyo, 17, 269–275.
Ikeda, I. (1907) On three new and remarkable species of echiuroids ( B. miyajimai, T. taenioides, T. elegans). Journal of the College of Science, Imperial University, Tokyo, 21, 1–64.
Ikeda, I. (1908a) Note on a new deep – sea echiuroid Protobonellia mitsukurii nov. gen. et sp. Annotationes zoologicae japonenses, 6, 250–265.
Ikeda, I. (1908b) On a new echiuroid ( Hamingia ijimai ) from Sagami Bay. Annotationes zoologicae japonenses, 7, 61–68.
Ikeda, I. (1911) Notes on a deep-sea echiuroid. Acanthohamingia shiplei (nov. gen. and sp.) with remarks on the species Hamingia ijimai Ikeda. Quarterly Journal of Microscopical Science, 56, 135–147.
Ikeda, I. (1924) Further notes on the gephyrea of Japan with descriptions of some new species from the Marshall, Caroline and Palau Islands. Japanese Journal of Zoology, 1 (2), 23–44.
Johnston, T.H. & Tiegs, O.W. (1919) Pseudobonellia,a new echiuroid from the Great Barrier Reef. Proceedings of the Linnean Society of New South Wales, 44, 213–239.
Johnston, T.H. & Tiegs, O.W. (1920) A new species of Bonellia from Port Jackson, Sydney. Records of the Australian Museum, 13, 75–76.
Jones, E.M. & Stephen, A.C. (1955) A new species of echiuroid worm (Ochetostoma capensis) from Cape Province, South Africa. Transactions of the Royal Society of South Africa, 34 (2), 273–278.
Murina, G.V.V. (1976) New abyssal species of echiurans from the Pacific and Atlantic Oceans. Zoologicheskii Zhurnal, 55, 837–844.
Murina, G.V.V. (1978) New and rare echiuroids of the family Bonelliidae. Trüdy Instituta Okeanologii Akademii Nauk S S S R 113, 107–119.
Nishikawa, T. (1998) Nomenclatural remarks on the family-group names of the Phylum Echiura. Proceedings of the Biological Society of Washington, 111(2), 249–256.
Nishikawa, T. (2002) Comments on the taxonomic status of Ikeda taenioides (Ikeda, 1904) with some amendments in the classification of the phylum Echiura. Zoological Science, 19, 1175–1180.
Nishikawa, T. (2004) Synonymy of the West-Pacific echiuran Listriolobus sorbillans (Echiura: Echiuridae), with taxonomic notes towards a generic revision. Species Diversity, 9, 109–123.
Prashad, B. (1919) Echiuroids from brackish water, with description of a new species from the Andamans. Memoirs of the Asiatic Society of Bengal, 323–338.
Prashad, B. (1921) On a new species of Thalassema from the Gulf of Mannar, with notes on Thurston’s species, T. formosulum. Record of the Indian Museum, 19 (2), 35–37.
Prashad, B. (1935) On a collection of echiuroids of the genus Thalassema Lamarck in the Indian Museum, Calcutta. Record of the Indian Museum, 37 (1), 39–44.
Prashad, B. & Awati, P.R. (1929) On a new species of the genus Thalassema from Bombay. Record of the Indian Museum, 31, 259–262.
Saiz-Salinas, J.I., Dean, H.K. & Cutler, E.B. (2000) Echiura from Antarctic and adjacent waters. Polar Biology, 23, 661–670.
Satô, H. (1931) Report of the biological Survey of Mutsu Bay. 20. Echiuroidea. Scientific Reports of Töhoku Imperial University, ser. 4, 6, 171–184.
Satô, H. (1934) Report on the Sipunculoidea, Echiuroidea and Priapuloidea collected by the Soyo – Maru Expedition. 1922 – 1930. Scientific Reports of Töhoku Imperial University, ser. 4, 9, 1–32.
Satô, H. (1935) Sipunculoidea and Echiuroidea of the West Caroline Islands. Scientific Reports of Töhoku Imperial University, 10(4), 229–329.
Satô,H. (1939) Studies on the Echiuroidea, Sipunculoidea and Priapuloidea of Japan. Scientific Reports of Töhoku Imperial University, 14(4), 339–460.
Scheltema, R.S. & Rice, M.E. (1990) Occurrence of telephanic pelagosphaera larvae of sipunculans in tropical regions of the Pacific and Indian Oceans. Bulletin of Marine Science, 47(1), 159–181.
Shipley, A.E. (1899a) Notes on a collection of gephyrean worms found at Christmas Island, Indian Ocean, by Mr C. W. Andrews. Proceedings of the Zoological Society of London, 1899(1), 54–57.
Shipley, A.E. (1899b) Notes on a collection of echiurids from the Loyalty Islands, New Britain and China Straits, with an attempt to revise the group and to determine its geographical range. In: Willey, A. Zoological results based on material from New Britain, New Guinea, Loyalty Islands and elsewhere, collected during the years 1895, 1896 and 1897, 3, 335–356. Cambridge : Cambridge University Press.
Shipley, A.E. (1902) Echiuroidea. (In) Gardiner, J. S., Fauna and geography of the Maldive and Laccadive Archipelagoes, 1, 127–130.
Stephen, A.C. & Cutler, E.B. (1969) On a collection of Sipuncula, Echiura and Priapulida from South African waters. Transactions of the royal Society of South Africa, 38(2), 111–121.
Stephen, A.C. & Edmonds, S.J. (1972) The Phyla Sipuncula and Echiura Trustees of the British Museum (Natural History), London, 528 pp.
Stephen, A.C. & Robertson, J. (1952) A preliminary report on the Echiuridae and Sipunculidae of Zanzibar. Proceedings of the Royal Society of Edinburgh, (B) 64(4), 426–444.
Thandar, A.S. (1989) Zoogeography of the southern African echinoderm fauna. South African Journal of Zoology, 24(4), 311–318.
Wesenberg-Lund, E. (1959) Sipunculoidea and Echiuroidea from Mauritius. Viddenskabelige Meddelelser fra Dansk naturhistorisk Forening I København, 121, 53–73.
Wesenberg-Lund, E. (1963) South African sipunculids and echiuroids from coastal waters. Videnskabelige Meddelelser fra Dansk naturhistorisk Forening I København, 125, 101–146.
Zenkevitch, L.A. (1957) A new genus and two new species of deep water Echiuroidea of the far eastern seas and of the north-west Pacific. Trüdy Instituta Okeanologii Akademii Nauk S S S R, 23, 291–295.
Zenkevitch, L.A. (1958) The Deep-sea echiurids of the north-western part of the Pacific Ocean. Trüdy Instituta Okeanologii Akademii Nauk S S S R, 27, 192–203.
Zenkevitch, L.A. (1964) New representatives of deep-sea echiurids Alomasoma belyaevi Zenkevitch sp. n. and Choanostoma filatovae n. sp. in the Pacific. Zoologicheskii Zhurnal, 43, 1863–1864.
Zenkevitch, L.A. (1966) The systematic and distribution of abyssal and hadal (ultraabyssal) Echiuroidea. Galathea Report, 8, 175–184.
Zenkevitch, L.A. & Murina, G.V.V. (1976) Deep-sea Echiurida of the Pacific Ocean. Trüdy Instituta Okeanologii Akademii S S S R, 99, 102–114.