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Biogeographic studies of shallow-water animals from Japanese waters, with special reference to the Pacific and philippine Plates

日本水域浅水动物的生物地理学研究，特别是太平洋和菲律宾板块

基本信息

批准号：
06304008
负责人：
TAKEDA Masatsune
金额：
$ 4.29万
依托单位：
National Science Museum, Tokyo
依托单位国家：
日本
项目类别：
Grant-in-Aid for Co-operative Research (A)
财政年份：
1994
资助国家：
日本
起止时间：
1994 至 1995
项目状态：
已结题

项目摘要

In January and Feburary, 1995, fish and invertebrates inhabiting shallow-waters around Chichi-jima in the Ogasawara Islands were collected with box- and cylinder-type dredge on board fishing boat and with hand-net during SCUBA diving. And also, in December 1995 and January 1996, the intensive collections and observations were made by several researchers, within the financial and climatical restriction, at the sea off Ishigaki-jima and Iriomote-jima, the Yaeyama Group in the southern Ryukyu Islands. Systematic studies on many groups are now in progress, the preliminary reports indicating the presence of many species new to science and also new to Japanese fauna. Comparisons between the faunae of various groups from the Ogasawara and Ryukyu Islands suggest that many shallow-water species not only the shore-fishes indicated by Springer (1982 : Smiths.Contri.Zool., 367) but also the benthic invertebrates are distributed along the Philippine and Pacific Plates. This may be reasonable because the oceanic currents are generally induced along the island chains and ridges formed by the impact of Plates. On the other hand, the complex bottom conditions accompnied with trench and trough along the island chains might lead to the species diversity possibly interpreted with the vicariance theory.

1995年1月和2月，在小川群岛赤岛附近浅水水域，用渔船上的箱式和圆筒式挖泥船和手网在潜水时捕获了鱼类和无脊椎动物。此外，1995年12月和1996年1月，几名研究人员在经济和气候限制下，在琉球群岛南部的矢山群岛石垣-吉马和伊洛莫特-吉马附近海域进行了密集的收集和观测。对许多种群的系统研究目前正在进行中，初步报告表明，许多物种的存在是科学上的新物种，也是日本动物群的新物种。小川和琉球群岛不同类群的动物群比较表明，许多浅水物种不仅有Springer(1982：Smiths.Contri.Zool，367)指出的近岸鱼类，而且还有底栖无脊椎动物，分布在菲律宾和太平洋板块。这可能是合理的，因为洋流通常是沿着板块撞击形成的岛链和海脊形成的。另一方面，复杂的底层条件伴随着岛链上的沟槽，可能导致物种多样性，可能用替代理论来解释。