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Seamounts as potential stepping stones for the dispersal of meiobenthos. Comparative taxonomic, faunistic, and biogeographic studies of the Kinorhyncha from different seamounts and islands of the north eastern Atlantic and the Mediterranean

海山是小型底栖动物扩散的潜在踏脚石。

基本信息

批准号：
283080919
负责人：
Dr. Kai Horst George
金额：
--
依托单位：
Museum für Naturkunde - Leibniz-Institut für Evolutions- und Biodiversitätsforschung (MfN)
依托单位国家：
德国
项目类别：
Research Grants
财政年份：
2015
资助国家：
德国
起止时间：
2014-12-31 至 2018-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/283080919?language=en
关键词：
Seamounts potential stepping stones dispersal

项目摘要

The here applied project is part of a comprehensive study on the potential role of seamounts for the dispersal of marine meiobenthic taxa. It intends to contribute to solving the problem of the meiofauna paradox. Based on small body size, lack of pelagic stages, and a strictly holobenthic life style, members of the meiobenthos are suggested to possess a limited potential for dispersal. Nevertheless, many representatives of the meiofauna do show a wide to cosmopolitan distribution in the world oceans at genus and even species level. During the past decades, seamounts have been studied more intensely, because they might play a role as stepping stones for the dispersal of such holobenthic taxa.Meiobenthos has been included into such studies just recently. Investigations focussed on a chorologic-faunistic comparison of taxa like Copepoda Harpacticoida, Halacarida, and Loricifera. It is necessary to extend the comparison to other meiobenthic taxa in order to come to more generalized conclusions for meiofauna. Kinorhyncha occur regularly in samples from seamounts but have not been studied in detail. The material of the here applied project originates from seven north east Atlantic and Mediterranean seamounts as well as from the islands Madeira and Porto Santo. For the first time, comprehensive material is therefore available for a meaningful comparative faunistic investigation of seamounts at a regional level. The applicants intend to undertake a quantitative taxonomic and multivariate analysis of the Kinorhyncha from the above mentioned locations. We shall focus on the questions (1) whether the seamounts and islands are characterized by an isolated kinorhynch lebensgemeinschaft with numerous endemic species or (2) whether the lebensgemeinschaften of different locations agree widely in their composition which may favour an exchange of species. Species from the Mediterranean mainland (Spain, Italy) will be included in the study. We expect to provide a major contribution to our understanding of the dispersal of meiobenthic taxa in the oceans in connection with our current examinations of Harpacticoida.

这里申请的项目是关于海山对海洋小型底栖类群扩散的潜在作用的综合研究的一部分。它旨在为解决小型动物悖论问题做出贡献。由于体型较小、缺乏中上层阶段以及严格的全底栖生活方式，小型底栖动物的扩散潜力有限。尽管如此，小型动物的许多代表确实在属甚至物种层面上在世界海洋中表现出广泛的世界性分布。在过去的几十年里，人们对海山进行了更加深入的研究，因为它们可能起到了这种全底栖类群扩散的垫脚石的作用。小型底栖动物最近才被纳入此类研究中。调查重点是对桡足类、Halacarida 和 Loricifera 等类群进行动物学和动物学比较。有必要将比较扩展到其他小型底栖类群，以便得出小型底栖动物更普遍的结论。动喙动物经常出现在海山样本中，但尚未得到详细研究。这里应用的项目的材料来自东北大西洋和地中海的七座海山以及马德拉岛和圣港岛。因此，首次提供了全面的材料，可用于在区域层面对海山进行有意义的动物区系比较调查。申请人打算对上述地点的动喙鸟进行定量分类学和多变量分析。我们将重点关注以下问题：（1）海山和岛屿的特征是否是一个具有众多特有物种的孤立的动因生活共同体（kinorhynch lebensgemeinschaft），或者（2）不同地点的生活共同体的组成是否广泛一致，这可能有利于物种的交换。来自地中海大陆（西班牙、意大利）的物种将被纳入研究中。我们希望通过目前对 Harpacticoida 的研究，为我们对海洋中小型底栖类群的扩散的理解做出重大贡献。