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Study on Systematic and Phylogeny of Architeuthis in Japanese waters

日本海域Architeuthis的系统学和系统发育研究

基本信息

批准号：
13660197
负责人：
KUBODERA Tsunemi
金额：
$ 2.18万
依托单位：
National Science Museum, Tokyo
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2001
资助国家：
日本
起止时间：
2001 至 2003
项目状态：
已结题

项目摘要

1.Systematic study based on external morphology was conducted with 10 individuals of Architeuthis collected around Japan. In results, three different types of mature male were recognized, i.e. a male having arms shorter than dorsal mantle length (DML) with distal portions of both Arm IV hectocotylized, a male having arms about 120% of DML with distal portions of both Arm IV hectocotylized and a male having arms about 150-170% of DML with no hectocotylized arms2.Molecular systematic study was conducted among above types with a sample from Architeuthis off New Zealand. COI in mtDNA was featured to analyze and 1276bp were compared. In results, a female of the third type has two differences and a male of the first type has one difference. The other four individuals, even in Architeuthis from New Zealand, have the same sequences. This indicates that those types and Architeuthis form NZ are possibly considered to be a single species3.Molecular phylogeny based on COI(658bp) among 60 species of Japanese cephalopods suggested that Architeuthis is allied to Discoteuthis.4.Although no pictures of Architeuthis in nature was taken, under water digital camera survey off Ogasawara Islands in 2002 and 2003 has yielded many interesting photos and knowledge of deep-sea large animals, including neon-fling squid in this region.5.Judging from previous studies on Architeuthis in Japanese waters, the third type is assuredly identical as A. Japonica described by Mitsukuri and Ikeda (1895). For the latter types, including Architeuthis in different regions in the world, further detailed studies on both morphological and molecular systematics based on specimens in good condition are highly required.

1.对采集于日本各地的10个Architeuthis个体进行了基于外部形态的系统研究。结果，识别出三种不同类型的成熟雄性，即臂短于背外套膜长度（DML）且两个臂IV的远端部分均为白子叶的雄性，雄性的臂约为DML的120%，两个臂IV的远端部分均为白子叶，雄性的臂约为DML的150-170%。2.以新西兰海域的Architeuthis为样本，对上述类型进行了分子系统学研究。对线粒体DNA中的COI进行了特征分析，并对1276 bp进行了比较。结果表明，第三种类型的女性有两个差异，第一种类型的男性有一个差异。其他四个个体，即使是来自新西兰的Architeuthis，也有相同的序列。3.基于658 bp的COI序列分析，日本60种头足类的分子遗传学研究表明，日本60种头足类中的Architeuthis与Discoteuthis有亲缘关系。2002年和2003年在小笠原群岛附近的水下数码相机调查获得了许多关于深海大型动物的有趣照片和知识，5.从日本沃茨的研究结果来看，第三种类型与日本海域的A.由Mitsukuri和Ikeda（1895）描述的日本。对于后者，包括世界不同地区的Architeuthis，在形态学和分子系统学的基础上，在良好的条件下标本的进一步详细研究是非常必要的。