春季东海南部海域幼鱼分布特征及其与环境关系的初步研究

Preliminary studies on the distribution characteristics of juvenile fish in the southern part of East China Sea in spring and its relationship with environment

依据1998年春季东海南部海域调查的各站椎幼鱼资料,进行了鉴定分类,并结合海洋环境进行了分析研究。在该海域获取的稚幼鱼有43种,隶属于8目、26科、27属,其中,底层鱼类有16科、24属、25种;中上层鱼类有8科、13属、18种。调查发现,稚幼鱼分布区与饵料浮游动物生物量高区基本相吻合。稚幼鱼分布比较集中的有3个区域:Ⅰ区在浙江沿岸水和台湾暖流水的交汇处,表层水温在16～18℃;Ⅱ区在浙闽沿岸水与台湾暖流水交汇处偏暖水一侧,表层水温在22～25℃;Ⅲ区在东海暖水与黑潮表层水交汇处偏暖水一侧,表层水温在22～25℃。从调查分析资料来看,在钓鱼岛附近海域可能是一个多种鱼类的产卵场。

This paper identifies these species of larvae and juveniles based on the data from investigation of the south area of the East China Sea in the spring of 1998 and analyses marine environment. There are 43 species caught from the investigation in the south area of the East China Sea. They belong to 27 generas, 26 Families, and 8 Orders. Of which there are 25 Species, 24 Genus, 16 Families for bottom fishes and 18 Species, 13 Genus and 8 Families for pelagic fishes. The distribution area of larvae and juveniles in the south area of the East China Sea is basically in line with abundant area of zooplankton. Three areas for concentrated distribution of larvae and juveniles in (?)e soum area o(?) Sea are as follows. No. 1 area is located at juncture between waters along the Zhejiang seacoast water and Taiwan warm current with surtace water t(?)perature of 16-18℃; No. 2 area is situated at the side of warm water in juncture between waters along the Zhejiang seacoast water and Taiwan warm current with the surface water temperature of 22 -25℃ ; No. 3 area is located at the side of warm water in the juncture between warm current of the East China Sea and pelagic water of Kuroshio Current with the surface water temperature of 22 - 25℃. It may be a spawning ground of diversified species near the Diaoyu Island.