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

由于卵和仔鱼的形态很少被收集和鉴定，对大型鱼类的早期个体发育知之甚少。在本研究中，作者在水柱中进行了更深层次的采样和DNA分析，以进行物种鉴定。从而澄清了以下几点。文中描述了两种鱼(Coryphaenoidesinalatus和Caelorinchus kishinouyei)的个体发育、中上层卵的发育、卵黄囊幼体、中上层幼体和幼体的形态。本文报道了加尔马尼文氏菌Ventifossa garmani，Caelorinchus sp.和两种类型(Macrourid属sp.)的浮游幼体和幼体。1和sp.2)进行了描述。边缘珊瑚、基氏青鱼和文氏文氏菌的远洋幼体(幼体)的形态特征有显著差异。这些差异对应于基于大型成体鱼类16S rRNA基因核苷酸序列的相邻连接树。珊瑚类…垂直迁移的总距离从浮游幼体和成体来看，较多的S边缘似乎在100-700米。边缘梭子蟹的远洋幼虫似乎并不是特别适合远洋生物。在本物种的早期个体发育过程中，较不专门的形态(对于远洋生活方式)似乎与较窄的个体发育迁徙范围有关。然而，在大型动物中，幼虫的形态特化与个体发育迁移之间的关系尚不清楚，因为其他浅栖物种的一些远洋幼虫的尾部显著延长，第一背部和骨盆FM线也延长。除了对大型水生鱼类的认识外，还描述了尚未发现的扬氏梭鱼(Halargyreus Johnsonii)的远洋幼体和长尾多角鱼的幼体和幼体。作为本研究的一部分，作者建立了苏鲁加湾上大陆斜坡表层(海底以上不到10m)(深度在200-900 m之间)的拖曳方法。此后，深水底栖鱼类的个体发育将被用这种方法弄清楚。较少

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