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NATURAL HISTORY OF SUBMARINE CAVE ORGANISMS

海底洞穴生物的自然历史

基本信息

批准号：
11691196
负责人：
KASE YOMOKI
金额：
$ 13.98万
依托单位：
NATIONAL SCIENCE MUSEUM, TOKYO (2001)National Museum of Nature and Science,Tokyo (1999-2000)
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (A)
财政年份：
1999
资助国家：
日本
起止时间：
1999 至 2001
项目状态：
已结题

项目摘要

1.Two new genus and 4 new species of the family Pickworthiidae (characteristic in submarine caves) and a new genus and species of the family Scissurellidae were described from the Indo-Pacific submarine caves. One new genus and species whose shell morphology has not been known was also described.2.Analysis of shell characters of the gastropod genus Pisulina resulted to recognize six species, of which two are new, and clarified that they constitute a monophyletic group together with the genus Neritilia and other related new genera. An anatomical study of Pisulina and Neritilia supported the result of our conchological study.3.One fossil species previously identified questionably to a living neritid species is recognized as a new genus and species of the family Neritiliidae, indicating that the family adopted cryptic environments at least by an Oligocene time.4.Two new genera and several new species of the family Neritiliidae were found from anchialine and hyporheic habitatas and river streams. This is the first discovery from mollusks from such environments except for a hydrobiid gastropod.5.Anatomical and molecular phylogenic analyses of the superorder Neritopsisna including the family Neritiliidae show that the superorder invaded land at least three times in their history, and also show that neritiliids in river streams were derived from those once adapted to marine cryptic environments via the anchialine and hyporheic environments.6.One new species of calanoid copepod genus Ridgewayia was described from a submarine cave in Palau This new species is related to a Caribbean species, suggesting westward dispersal from the Caribbean Sea. This study also found 4 new species of the mysid genus Heteromysoides and Heteromysis. One living fossil new genus and species of ostracod, Kasella ryukyuensis, was described from the submarine caves on Okinawa.

1.记述了采自印度洋-太平洋海底洞穴的Pickworthiidae科2新属4新种和Scissurellidae科1新属新种。2.通过对腹足类Pisulina属的贝壳特征分析，鉴定出6个种，其中2个为新种，并阐明它们与Neritilia属及其他相关新属构成一个单系群。对Pisulina和Neritlia的解剖学研究支持了我们的贝壳学研究结果。3.一个化石种被确认为Neritilidae的一个新属新种，4.在近缘和低流生境中发现了螺科的2个新属和几个新种，河流这是除水生腹足动物外，首次从此类环境中的软体动物中发现。5.对包括Neritiliidae科在内的Neritopsina总目的解剖学和分子生物学分析表明，该总目在其历史上至少入侵过三次陆地，并表明河流中的Neritilids是从那些曾经适应海洋隐蔽环境的环境中通过Anchialine和Hyporheic环境获得的。报道了采自帕劳海底洞穴的脊形桡足类1新种。本研究还发现糠虾属Heteromysoides和Heteromysis 4新种。报道了采自冲绳海底洞穴的化石新属新种--琉球小笠螺（Kasellayukyuensis）。