Abstract
A new species of freshwater kamptozoan (Entoprocta) is described from the Mae Klong and Prachin Buri Rivers in central Thailand. This brings to two the number of known entoproct species occurring in fresh water. The new species, Loxosomatoides sirindhornae, grows as stolonate colonies; each diminutive zooid has a muscular, unsegmented stalk, and an obliquely oriented calyx. A well-formed hibernaculum originates from a short, lateral stolon at the base of certain zooids. The calyx bears a rigid shield with a conspicuous aboral carina extending along the entire length. Colonies have been found only in fully freshwater habitats and appear not to tolerate salinities higher than 1.0 ppt.
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References
N. Annandale (1915) ArticleTitleFauna of the Chilka Lake. The Polyzoa of the Lake and of brackish water in the Gangetic Delta Memoires of the India Museum 5 119–133
A. Bonetto E. Coridiola (1963) ArticleTitleNotas sobre Briozoos (Endoprocta y Ectoprocta) del Rio Paraná, I., Urnatella gracilis Leidy e Hislopia lacustris Carter en el Paraná medio Physis 24 81–85
H. Damas (1939) ArticleTitleSur la présence dans la Meuse belge de Branchiura sowerbyi (Beddart), Craspedacusta sowerbyi (Lankester) et Urnatella gracilis (Leidy) Annales de la Société Royale Zoologique de Belgique 69 293–310
P. Emscherman (1972) ArticleTitleLoxokalypus socialis gen. et sp. nov. (Kamptozoa, Loxokalypodidae fam. nov.), ein neuer Kamptozoentyp aus dem nördlichen Pazifischen Ozean. Ein Vorschlag zur Neufassung der Kamptozoensystematik Marine Biology 12 IssueID3 237–254
J. Leidy (1851) ArticleTitleOn some American fresh-water Polyzoa Proceedings of the National Academy of Science of Philadelphia 5 320–322
F. Mañé-Garzon (1964) ArticleTitleUrnatella gracilis Leidy 1851 (Bryozoa Endoprocta) en el Uruguay. Anais do Segundo Congresso Latino-Americano de zoologie, July, 1962 São Paulo 1 275–281
Nielsen, C., 1989. Entoprocts: Keys and notes for the identification of the species. Synopses of the British Fauna (New Series), Vol. 41. Leiden, E., J. Brill. 131 pp.
S. Oda (1982) ArticleTitleUrnatella gracilis, a freshwater kamptozoan occurring in Japan Annotationes Zoologicae Japonenses 55 IssueID3 151–166
R. V. Seshaiya (1947) ArticleTitleOn Urnatella indica Seshaiya, a freshwater entoproctan from South India Records of the Indian Museum 45 283–289
K. Wasson B. Holle ParticleVon J. Toft G. Ruiz (2000) ArticleTitleDetecting invasions of marine organisms: kamptozoan case histories Biological Invasions 2 59–74
F. Wiebach (1965) ArticleTitleUrnatella gracilis Leidy (Bryozoa Entoprocta) in Zentralafrika Revue de Zoologie et Botanie Africaine 72 234–242
T. Wood (1996) ArticleTitleAquarium culture of freshwater invertebrates American Biology Teacher 58 46–50
F. S. Zambriborshch (1958) ArticleTitleRepresentative of an invertebrate class – Kamptozoa – New for the fresh waters of the USSR (Urnatella dnjestriensis, sp. n.) Zoologicheskii Zhurnal 36 1741–1744
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Wood, T.S. Loxosomatoides sirindhornae, new species, a freshwater kamptozoan from Thailand (Entoprocta). Hydrobiologia 544, 27–31 (2005). https://doi.org/10.1007/s10750-004-7909-x
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DOI: https://doi.org/10.1007/s10750-004-7909-x