%0 Journal Article
%T A preliminary study on fishery biology of main commercial fishes surveyed from the bottom trawl fisheries in the East China Sea<br>东海区底拖网渔业主要经济鱼类渔业生物学的初步研究
%A LIN Long-shan
%A ZHENG Yuan-jia
%A CHENG Jia-hua
%A LIU Yong
%A LING Jian-zhong
%A <br>林龙山
%A 郑元甲
%A 程家骅
%A 刘 勇
%A 凌建忠
%J 海洋科学
%D 2006
%I 
%X 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.
%K fisheries biology
%K commercial fishes
%K bottom trawl
%K evaluation of fisheries resources
%K East China Sea<br>渔业生物学
%K 经济鱼类
%K 底拖网
%K 渔业资源评估
%K 东海区
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=2D9C75573FA3E416&jid=DFE7B94EB76B8F26135C9890832CEF6A&aid=E3EA973067CFD407&yid=37904DC365DD7266&vid=340AC2BF8E7AB4FD&iid=0B39A22176CE99FB&sid=659D3B06EBF534A7&eid=C5154311167311FE&journal_id=1000-3096&journal_name=海洋科学&referenced_num=17&reference_num=14