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东海区底拖网渔业主要经济鱼类渔业生物学的初步研究
引用本文:林龙山,郑元甲,程家骅,刘 勇,凌建忠.东海区底拖网渔业主要经济鱼类渔业生物学的初步研究[J].海洋科学,2006,30(2):21-25.
作者姓名:林龙山  郑元甲  程家骅  刘 勇  凌建忠
作者单位:农业部海洋与河口渔业重点开放实验室,中国水产科学研究院,东海水产研究所,上海,200090
基金项目:国家重点基础研究发展规划项目(G19990437)
摘    要:根据1997~2000年东海区底拖网渔业资源调查资料,分析了18种主要经济鱼类的渔业生物学特征,运用体长频率法估算了von Bertalanffy生长参数、总死亡系数、自然死亡系数、捕捞死亡系数和开发率。结果表明,大部分鱼类已出现个体小型化,15种鱼类的开发率过高,处于超额开发状态,其中,4种为重度超额开发,开发率大于0.8,7种为中度超额开发,开发率介于0.7~0.8之间,4种为轻度超额开发,开发率为0.5~0.7。建议加强保护和管理,以利于鱼类资源的可持续利用。

关 键 词:渔业生物学  经济鱼类  底拖网  渔业资源评估  东海区
文章编号:1000-3096(2006)02-0021-05
收稿时间:2004-03-02
修稿时间:2004-03-022004-05-28

A preliminary study on fishery biology of main commercial fishes surveyed from the bottom trawl fisheries in the East China Sea
LIN Long-shan,ZHENG Yuan-jia,CHENG Jia-hua,LIU Yong,LING Jian-zhong.A preliminary study on fishery biology of main commercial fishes surveyed from the bottom trawl fisheries in the East China Sea[J].Marine Sciences,2006,30(2):21-25.
Authors:LIN Long-shan  ZHENG Yuan-jia  CHENG Jia-hua  LIU Yong  LING Jian-zhong
Institution:Key and Open Laboratory of Marine and Estuarine Fisheries, Ministry of Agriculture, East China Sea Fisher ies Institute, Chinese Academy of Fishery Sciences,Shanghai 200090, China
Abstract:On the basis of the bottom trawl fishery resources investigation in the East China Sea in 1997~2000,this paper analyzed the fishery biological characteristics of 18 species of main commercial fishes.Parameters,such as von-Bertalanffy growth parameters,total mortality,natural mortality,fishing mortality and exploitation rates,were estimated by length-based methods.The results showed that,miniaturization occurred in most of the fishes,and the exploitation rates of 15 species were excessively high.Among those fishes,4 species,whose exploitation rates were more than 0.8,were in high over exploitation;7 species,whose rates ranged from 0.7 to 0.8,were in middle over exploitation;and the other 4 species ranged from 0.5 to 0.7 were in lower over exploitation.In order to sustainable utilization of fishery resources,effective protection and management measures should be taken.
Keywords:fisheries biology  commercial fishes  bottom trawl  evaluation of fisheries resources  East China Sea
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