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Phylogenetic study of the cephalopoda based on anatomical, embryological and molecular data

基于解剖学、胚胎学和分子数据的头足类动物系统发育研究

基本信息

批准号：
06452097
负责人：
TANABE Kazushige
金额：
$ 4.86万
依托单位：
The 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：
1994
资助国家：
日本
起止时间：
1994 至 1995
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-06452097/
关键词：
Cephalopoda Anatomy Embryology Molecular biology Phylogeny

项目摘要

1) Comparative embryological studyOn the basis of well-preserved material from various localities throughout the world, Tanabe and Shigeta have investigated the embryonic shell features of the embryonic shells of various ammonoids using a scanning electron microsope, and the results were compared with data on other extant and fossil cephalopods. As a results, it was revealed that the embryonic shell features in ammonoids are quite different from those of nautilids but are quite similar to those of coleoids. Tanabe is now studying with Mr.Kimio Uchiyama of the Toba Aquarium on the embryonic shell development of living Nautilus in aquaria. Details of these studies will be published in a book chapter of "ammonoid Paleobiology" (Plenum Press) in 1996.2) Comparative anatomical studyTanabe and Mapes (1995) described the jaws and radula of a Carboniferous ammonoid Cravenoceras from Oklahoma and discussed its phylogenetic implications.3) Phylogenetic sutdyIn order to realize the phylogenetic position of the Ammonoidea within the Cephalopoda, Tanabe and Landman (American Museum of Natural History, New York) did a cladistic analysis of 14 embryonic and anatomical characters in five operational taxonomic units. As a result, it was realized the Cephalopoda consists of two monophyletic groups, the Nautiloidea and the Neocephalopoda, the latter includes the Sphaerorthocerida, Ammonoidea, and Coleoidea. This result will be published in Novitates in 1996.4) Molecular biological studyEndo is now doing research on the molecular systematic study on Nautilus, a well-known living fossil. He also is analyzing biomolecules preserved in cephalopod hard tissues to obtain data on molecular evolution.

1)比较胚胎学研究田边和重田在世界各地保存完好的材料的基础上，用扫描电子显微镜研究了各种菊石类的胚胎壳特征，并将结果与其他现存和化石头足类的数据进行了比较。结果表明，菊石类的胚胎壳特征与鹦鹉螺类的胚胎壳特征有很大的不同，而与鞘翅目的胚胎壳特征很相似。田边现在正与鸟羽水族馆的内山公雄先生一起研究水族馆中活鹦鹉螺的胚胎壳发育。这些研究的细节将在《菊石古生物学》一书的章节中发表2）比较解剖学研究Tanabe和Mapes（1995）描述了产于俄克拉荷马州的石炭纪菊石Cravenoceras的颌骨和齿舌，并讨论了其系统发育意义。3）系统发育研究为了了解菊石总科在头足类中的系统发育位置，田边和兰德曼（美国自然历史博物馆，纽约）在5个操作分类单位中对14个胚胎和解剖特征进行了分支分析。结果发现，鲸足类由鹦鹉螺总科和新鲸足类两个单系类群组成，新鲸足类包括球正鲸目、海葵总科和鞘总科。4）分子生物学研究远藤正致力于著名的活化石鹦鹉螺的分子系统学研究。他还分析保存在头足类硬组织中的生物分子，以获得分子进化的数据。