瓯江口渔场夏秋季浮性鱼卵和仔鱼的时空分布  

Distribution patterns of ichthyoplankton in the Oujiang estuary

作　　者：徐兆礼[1] 陈华[1] 陈庆辉[2] 

机构地区：[1]中国水产科学研究院东海水产研究所农业部海洋与河口渔业重点开放实验室,上海200090 [2]国家海洋局第三海洋研究所,福建厦门361005

出　　处：《水产学报》2008年第5期733-739,共7页Journal of Fisheries of China

基　　金：上海市908专项(PJ1-1);我国近海海洋综合调查与评价908专项(908-02-01-03);国家自然科学基金重大研究计划(90511005)

摘　　要：利用2007年6月和9月瓯江口海域鱼卵、仔鱼调查资料,分析瓯江口渔场鱼卵、仔鱼种类组成、数量分布、产卵场位置和产卵期特征。结果表明,调查期间瓯江口鱼卵、仔鱼共出现6目11科18种(包括1种未定种),其中鲈形目种类最多,鲱形目次之。6月是瓯江口鱼类的产卵期,产卵场位于洞头大门岛周围水域,主要是规格较小的地区性物种,也是大型经济鱼类的饵料,例如小公鱼和虾虎鱼等;9月产卵场主要位于洞头群岛水域外侧,主要是一些经济鱼类,如白姑鱼等。瓯江口海域所处纬度、海域地形地貌和水文环境特征以及瓯江径流的综合影响,使大门岛附近成为瓯江口海域的主要产卵场。Icthyoplankton composition, distribution and dominance in the Oujiang estuary （Zhejiang Province） were investigated June- September of 2007. Eggs and larvae of 18 species representing of 6 orders and 11 families were identified and counted. Clupeiformes and Mugiliformes orders had the most species. In June, most abundant larvae were Gobiidae sp. and Johnius belengerii which together made up 91.33% of total larvae. These dominant larvae were resident species and the diet for some economical fishes. Yet in September, Pennhia argentatus and Gobiidae sp. were the most abundant larvae which contributed to 69.56% of the total larvae. Pennhia argentatus was important economical species in the studied area. The major spawning ground located in the waters off the Damen Island in June, the main spawning period. However, in September the spawning ground mainly located in the east waters of the Dongtou Islands. The runoff from Oujiang River, the latitude, the background of topography and geomorphy, the hydgological features and its nutrients of waters from numerous islands, narrow water channels, dense reefs and the cross of fresh water and marine water are all responsible for the ideal spawning and nursery ground near the Oujiang estuary.

关 键 词：瓯江口 鱼卵 仔鱼 产卵场 育幼场 数量分布 

分 类 号：S932.52[农业科学—渔业资源]