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

骏河湾大尿科幼虫的发育及生态学研究。

基本信息

批准号：
16580159
负责人：
FUKUI Atsushi
金额：
$ 2.32万
依托单位：
Tokai University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2004
资助国家：
日本
起止时间：
2004 至 2007
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-16580159/
关键词：
Macrourid fishes fish eggs fish larvae Suruga Bay early life history deen fishes 卵・稚仔生態卵稚仔

项目摘要

The early ontogeny of macrourid fishes was poorly known, since eggs and larval forms have been rarely collected and identified. In this study, the author carried out deeper sampling in the water column and DNA analyses for species identification. Thereby the following was clarified.1. The ontogeny of two species, Coryphaenoides marginatus and Caelorinchus kishinouyei, development of pelagic eggs, morphology of yolk-sac larvae, pelagic larvae and juveniles, were described.2. The pelagic larvae and/or juveniles of Ventrifossa garmani, Caelorinchus sp., and two types (Macrourid genus sp. 1 and sp. 2) were described.3. The morphological characters are remarkably different among the pelagic larvae (juveniles) of Coryphaenoides marginatus, Caelorinchus kishinouyei, and Ventrifossa garmani. These differences are corresponded to neighbor joining tree based on the nucleotide sequences of the 16S rRNA gene from macrourid adult fishes.4. The overall distance of vertical migration of Coryphaenoide … More s marginatus seems to be 100-700 m, judging from the pelagic larval and adult collections. The pelagic larvae of C. marginatus do not seem to be particularly specialized for pelagic life. The less specialized morphologies (for a pelagic life style) apparent during early ontogeny of the present species seem to be related to the narrower ontogenetic migration range. However, the relationship between larval morphological specialization and ontogenetic migration is not clear in macrourids as some pelagic larvae of other shallower-dwelling species have a remarkably elongate caudal region and elongate first dorsal and pelvic fm rays.5. In addition to the knowledge of macrourid fishes, the pelagic juvenile of Halargyreus johnsonii (Gadiformes : Moridae)and the larvae and juvenile of Polymetme elongata (Stomiiformes : Phosichthyidae) were described, being not known to date.As part of this study, the author established the towing method in the epibenthic layer (less than 10m above seafloor) of the upper continental slope of Suruga Bay (depth between 200 m and 900 m). Thereafter, the ontogeny of the deep benthic fishes will be made clear by this method. Less

早期个体发育的macrouridae鱼类知之甚少，因为鸡蛋和幼虫的形式已经很少收集和鉴定。在这项研究中，作者进行了更深的采样，在水柱和DNA分析的物种鉴定。因此，澄清了以下内容。描述了两种鱼类Coryphaenoides marginatus和Caelorinchus kishinouyei的个体发育、浮游卵的发育、卵黄囊幼体、浮游幼体和幼体的形态.本文报道了加氏凹腹鱼（Ventrifossa garmani）、Caelorinchus sp.并描述了两个类型（大尾虫属sp.1和sp.2）.缘条鳕、溪氏凯吻鳕和加氏凹腹鳕的浮游仔（幼）稚贝形态特征存在显著差异。这些差异与基于16 S rRNA基因核苷酸序列的邻接树相对应. Coryphaenoide垂直迁移的总距离 ...更多信息的marginatus似乎是100-700米，从远洋幼虫和成人的集合判断。C. marginatus似乎并不特别适合远洋生活。在本物种的早期个体发育过程中明显的专业化程度较低的形态（远洋生活方式）似乎与较窄的个体发育迁移范围有关。然而，在macrourids中，幼虫形态特化和个体发育迁移之间的关系尚不清楚，因为其他浅居物种的一些浮游幼虫具有显着伸长的尾部区域和伸长的第一背鳍和骨盆鳍。除了对长尾鱼类的了解外，约翰逊钟鲷的中上层幼鱼（鳕形目：桑科）和长突多眼鱼仔、稚鱼（口形目：Phosichthyidae）的描述，是不知道的日期。作为这项研究的一部分，建立了浅海层拖航法在骏河湾大陆坡上部（深度在200米至900米之间）（离海底不到10米）的一个区域。利用这种方法，可以更清楚地了解深海底栖鱼类的个体发育。少