PALEONTOLOGICAL, DEVELOPMENTAL, AND MOLECULAR BIOLOGICAL APPROACHES TO THE ORIGIN AND PHYLOGENY OF THE MOLLUSCA

关于软体动物起源和系统发育的古生物学、发育和分子生物学方法

基本信息

批准号：
09304049
负责人：
TANABE Kazushige
金额：
$ 18.43万
依托单位：
THE UNIVERSITY OF TOKYO
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (A)
财政年份：
1997
资助国家：
日本
起止时间：
1997 至 1999
项目状态：
已结题

项目摘要

A) Comparative anatomical and embryological studies.A-1. Studies on Bivalvia Tanabe and Hayakaze have described the presence of a univalved organic shell in the trochophore larval stage of the Bivalvia, prior to the development of a bivalved calcified shell. A similar univalved organic shell has been recognized in early stage of Gastropod and Cephalopod, suggesting its synapomorphic nature among the Conchifera (Hayakaze and Tanabe, 1999).A-2. Studies on Cephalopoda Tanabe, Sasaki and Isaji have studied the early shell development and morphogenesis of the siphuncular tissue in Recent Nautilus by means of SEM and TEM ( Tanabe & Uchiyama,1997 ; Isaji & Tanabe, in prep.). Tanabe has also realized the anatomical features of cephalopod buccal mass (Tanabe & Fukuda, 1999) and ammonoid siphuncle (Tanabe et al., in press).A-3. Studies of Gastropoda Sasaki and Kase have made clear the higher and lower taxonomy and phylogenetic relationships of some primitive gastropods (Sasaki, 1998 ; Kase, 1998a-c).B) Molecular phylogenetic studies.Ewndo and Ueshima have realized the mitochodrial genome structure of the brachiopod laqueus, discussing the phylogenetic relationships of the Lophotrochozoa, Annelida, and Mollusca (Noguchi et al., in press).C) Biomineralogical studies.Endo and his co-worker, Sarashina have made clear the primary structure of the soluble matrix protein of scallop shell, discussing its significance for biomineralization (Sarashina & Endo, 1998).

a）比较解剖学和胚胎学研究。A-1。关于双瓦尔维亚（Bivalvia）的田纳布（Bivalvia）和胡亚卡兹（Hayakaze）的研究描述了在双壳钙化钙化壳之前，在bivalvia的杆子幼虫阶段中存在一个无染色的有机壳。在腹足类动物和头足类动物的早期阶段已经认识到类似的无壳有机壳，这表明其在结膜中的突触性质（Hayakaze和Tanabe，1999）.A-A-2。关于头孢菌，萨萨基和伊萨吉头孢菌的研究已经研究了近期nautilus在SEM和TEM的早期壳体发育和形态发生（Tanabe＆Uchiyama，1997; Isaji＆Tanabe＆Tanabe，prep。）。 Tanabe还意识到了头足类颊质量的解剖学特征（Tanabe＆Fukuda，1999）和氨基siphuncle（Tanabe等人，印刷中）.A-3。 Studies of Gastropoda Sasaki and Kase have made clear the higher and lower taxonomy and phylogenetic relationships of some primitive gastropods (Sasaki, 1998 ; Kase, 1998a-c).B) Molecular phylogenetic studies.Ewndo and Ueshima have realized the mitochodrial genome structure of the brachiopod laqueus, discussing the phylogenetic relationships of the Lophotrochozoa, Annelida和Mollusca（Noguchi等人，在印刷中）.c）生物媒体研究。