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黄海南部、东海北部夏秋季小黄鱼数量分布及与浮游动物的关系
引用本文:李建生,严利平,李惠玉,刘洋.黄海南部、东海北部夏秋季小黄鱼数量分布及与浮游动物的关系[J].海洋渔业,2007,29(1):31-37.
作者姓名:李建生  严利平  李惠玉  刘洋
作者单位: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. 江苏省邳州市水产技术指导站,江苏,邳州,221300
基金项目:农业部东海区渔业资源动态监测网项目
摘    要:对夏秋季黄海南部、东海北部海域的小黄鱼和浮游动物的数量分布及其它们之间的关系进行了研究,结果表明:夏秋季节,黄海南部、东海北部小黄鱼主要出现在大沙、江外、吕四和沙外渔场,夏季最高生物量分布区出现在长江口和江外渔场交界处的31°30′N、125°00′E海域,秋季最高生物量分布区出现在大沙和沙外渔场交界处的32°30′N、125°00′E海域。2个季节浮游动物优势种的组成主要以浮游甲壳动物、浮游幼体以及毛颚类动物为主。浮游动物有2个密集分布区:一个在近岸一侧123°00′E经度线附近,夏季呈南北方向分布,秋季呈西北-东南走向;另一个在32°00′N、125°00′E附近海域。从夏季到秋季,浮游动物优势种的组成有了较大的更替,优势种的范围更加扩大;夏季占绝对优势的中华哲水蚤到秋季已经不在优势种之列。夏秋季小黄鱼主要分布区与浮游动物的高密度分布区存在着良好的对应关系。夏季小黄鱼和其他浮游食性鱼类的强烈的摄食影响可能造成了秋季浮游动物丰度的急剧下降。小黄鱼主要分布区内饵料浮游动物优势种的季节变化可能对其食物选择的变化有重要的影响。

关 键 词:黄海南部、东海北部  小黄鱼  浮游动物  数量分布
文章编号:1004-2490(2007)01-0031-07
修稿时间:2006-12-30

On the relationship between quantity distribution of small yellow croaker (Larimichthys polyactis Bleeker) and zooplankton in Southern Yellow Sea and the Northern East China Sea in summer and autumn
LI Jian-sheng,YAN Li-ping,LI Hui-yu,LIU Yang.On the relationship between quantity distribution of small yellow croaker (Larimichthys polyactis Bleeker) and zooplankton in Southern Yellow Sea and the Northern East China Sea in summer and autumn[J].Marine Fisheries,2007,29(1):31-37.
Authors:LI Jian-sheng  YAN Li-ping  LI Hui-yu  LIU Yang
Institution:1. Key and Open Laboratory of Marine and Estuarine Fisheries, Ministry of Agriculture, East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200090, China; 2. Pizhou Instructor Station of Fisheries Technology, Pizhou , Jiangsu 221300, China
Abstract:The present paper dealed with the study on relationship between quantity distribution charactristics of small yellow croaker and zooplankton of SYS and NECS in summer and autumn.We came to the conclusions that Small yellow croaker mostly appeared in fishing grounds of Dasha,Jiangwai,Lusi and Shawai in SYS and NECS in summer and autumn.The highest biomass section was located at 31.2°N 125°E,the juncture of two fishing grounds of Yangtze estuary and Jiangwai in summer.In autumn,the highest biomass section was located at 32.5°N 125°E,the juncture of fishing grounds of Dasha and Shawai.The main dominant species of zooplankton were zoocarapace,zooplankton larvae and chaetognatha in summer and autumn.There were two higher abundance distributing section,the one was nearby the line of 123°E alongshore,the direction was south-northward in summer and northwest-southeastward in autumn,the other was located in the sea area nearby 32°N 125°E.The dominant species composition of zooplankton had the bigger change and range of dominant species has much more extended from summer to autumn.Further more,Calanus sinicus had absolute dominance in summer,but was not belong to dominant species in autumn.There was the nicer corresponding relation between the main distributing section of small yellow croaker and high abundance section of zooplankton in SYS and NECS in summer and autumn.The zooplankton abundance maybe sharply descended from summer to autumn caused by the strong feeding of small yellow croaker and other feeding-plankton fishes in summer. The seasonal variation of bait dominant species may be heavily effected to the change of food selection of small yellow croaker in summer and autumn.
Keywords:SYS and NECS  Larimichthys polyactis Bleeker  zooplankton  quantity distribution
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