Studies on the development and ecology of the macrourid larvae in Suruga Bay.

本研究澄清了以下几点：实验结果表明，用净取样法采集了大量的大卵，并对边缘斑蝶（coryphaenides marginatus）和凯络蠓（Caelorinchus kishinouyei）的胚胎发育和卵黄囊幼虫进行了孵育。被描述。两种卵都很容易通过黑素细胞的模式来区分。收集到的大蛾幼虫（层至表层深度350米）的个体数量达到189只。根据体型比例和黑素细胞分布特征将其区分为6种，并进一步鉴定为边缘斑蝶（coryphaenides marginatus）、kishinouyecaelorinchus、japonicus？幼虫和成虫之间的DNA碱基对与分生计数或DNA碱基对一致。其余两种类型由于体型小而缺乏特征，甚至没有被赋予属的分类单元。对前4种的幼虫进行了描述，并对其属分类群特征进行了总结，包括以往的报道。本文首次报道了狐尾草属。收集了一种鱼幼鱼，属于Moridae的jonsonharargyreus。对该幼鱼进行了描述，并为鱼类学研究做出了贡献。从去年开始，我们在骏河湾内侧的下乡谷海底近海底拖层取样，收集了2001-2002年的大纹蛾幼虫。目前在200 ~ 600米深度的海底以上10 ~ 50米的海面上进行拖曳是可能的。与分布在骏河湾的成虫相比，其幼虫种类较少。我们连续采集了下碣石谷从350米深处到地表的层和底栖层。

The following was clarified by this study.1.As a result of experiments incubated the many macrourid eggs collected by net samplings, the embryonic development and the yolk-sac larvae of Coryphaenoides marginatus and Caelorinchus kishinouyei? were described. Both eggs were easily distinguished by melanophore patterns.2.Individual numbers of the collected macrourid larvae (depth 350 m layer to surface) attains 189. They were distinguished to six types by body proportions and melanophore patterns, furthermore identified to Coryphaenoides marginatus, Caelorinchus kishinouyei, Caelorinchus japonicus?, and Ventrifossa garmani by agreement with meristic counts or the base pairs of DNA between larvae and adults. The remaining two types were not given taxon of genus even due to lack of characters by the small size. Larvae of the former four species were described and characters as taxon of genus were summarized including the past reports. Genus Ventrifossa were firstly described.3.Juvenile of the rare fishes, Harargyreus johnsonii belonging to Moridae was collected. The juvenile was described and contributed to Ichthyological Research.4.In the last year, we begin examination-sampling methods to tow layer close to bottom of the sea in the submarine valley, Hagoromo valley, located at the inner part of Suruga Bay, to collect macrourids larvae than 2001-2002 years. It is possible to tow the layer 10 to 50 m above bottom of sea in the depth 200 to 600 m now.As problems, there is little species numbers of larvae in comparison with those of macrourid adults distributed in Suruga Bay. We has continuously collected the layer from depth 350 m to surface and ephibenthic layer of Hagoromo valley.