Comparative biology of deep-sea shelly invertebrates

深海有壳无脊椎动物的比较生物学

基本信息

批准号：
01460062
负责人：
HAYAMI Itaru
金额：
$ 4.61万
依托单位：
University of Tokyo
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (B)
财政年份：
1989
资助国家：
日本
起止时间：
1989 至 1991
项目状态：
已结题

项目摘要

Various important knowledge has been obtained about the comparative biology of marine shelly invertebrates (Bivalvia, Gastropoda, Cephalopoda, . Ostracoda and Crinoidea) which well in deep-water and cryptic environments (22 papers and 20 oral presentations).Hayami and Kase found a rich molluscan assemblage in several submarine caves of Ie-jima and Shimoji-jima in Ryukyu, and its uniqueness in morphology, ecology and development was clarified with assistance of skilled divers. This fauna contains "living fossil". genera, Neritopsis and Pycnodonte, and numerous minute molluscs which are surprisingly similar to deep-sea faunas in generic assemblage and developmental strategy. The predominance of paedomorphosis and K-selection in cave molluscs is very interesting for the test of some general theories and models in evolutionary ecology.Hayami clarified the airfoil function of streamlined pectinid shells by hydrodynamic experiments. -Tanabe studied early development and larval ecology of bivalves (Limopsidae), and also obtained various new knowledge about the early ontogeny and functional morphology of ammonites and living Nautilus. Abe examined sexual behavior of an ostracod using video and clarified the function of limbs. Oji described Miocene crinoids in Japan, and cultured living crinoid, obtaining much information about their ecology, functional morphology, autotomy regeneration of arms.

关于海洋有壳无脊椎动物（双壳纲、腹足纲、头足纲、介形纲和海百合纲）的比较生物学，我们已经获得了各种重要知识，这些无脊椎动物在深水和神秘环境中表现良好（22 篇论文和 20 次口头报告）。Hayami 和 Kase 发现了丰富的知识琉球伊江岛和下地岛几个海底洞穴中的软体动物组合及其独特性在熟练潜水员的帮助下，阐明了形态、生态和发育。这个动物群含有“活化石”。 Neritopsis 和 Pycnodonte 属，以及许多微小的软体动物，它们在类群组合和发育策略上与深海动物区系惊人地相似。洞穴软体动物的幼体发育和K选择的优势对于检验进化生态学中的一些一般理论和模型非常有意义。Hayami通过流体动力学实验阐明了流线型果胶壳的翼型功能。 -田边研究了双壳类（Limopsidae）的早期发育和幼虫生态学，还获得了有关菊石和活鹦鹉螺的早期个体发育和功能形态的各种新知识。安倍通过视频检查了介形类的性行为，并阐明了四肢的功能。王子在日本描述了中新世的海百合，并培养了活的海百合，获得了有关其生态、功能形态、手臂自切再生的大量信息。