海底洞窟と近底層における甲殻類の多様性と進化(2009年度日本動物分類学会シンポジウム)

概要

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Marine caves and hyperbenthic layers harbor highly unique and diversified crustacean communities and accommodate both ancestral and advanced forms, suggesting repeated colonization to these habitats through the geological time. Some of the primitive groups show a Tethyan track. Remipedes and other crustaceans such as mictaceans are exclusively endemic to marine caves, taking advantage of caves as refuges. Truly cavernicolous crustaceans could have originated directly from shallow hyperbenthic, interstitial or crevicular ancestors or indirectly from the shallow- throughout the deep-water forms. Copepods can be regarded as one of the best model animals to understand the colonizing processes and patterns in these habitats, due to ample data on the distribution and phylogenetic analyses. These habitats have been intensively surveyed in the Mediterranean Sea, the Canary Islands, Burmuda, the Yucatan Peninsula, the Caribbean Sea, the Galapagos Islands and western Australia, but not so in East Asian waters. Hence taxonomic and phylogenetic investigations of these crustaceans should be addressed in Japanese waters to clarify their origins, colonization routes and evolutionary patterns and processes.
日本動物分類学会の論文
2010-02-20