伏季休渔制度下东海区带鱼资源动态分析  

Dymamic Analysis on Trichiurus japonicus Resources in Summer Closed Fishing Syseem in East China Sea

作　　者：王垚[1,2] 徐汉祥[2] 

机构地区：[1]浙江海洋学院,浙江舟山316004 [2]浙江海洋学院海洋与渔业研究所,浙江省海洋水产研究所,浙江舟山316100

出　　处：《浙江海洋学院学报（自然科学版）》2009年第4期384-388,共5页Journal of Zhejiang Ocean University(Natural Science Edition)

基　　金：国家科技支撑计划(2007BAD43B01);浙江省新苗人才计划(2008R40G2110019);国家自然科学青年基金(40801225)

摘　　要：根据历年东海区带鱼资源动态监测结果,结合有关带鱼课题资料,对东海区带鱼资源从实施伏季休渔制度以来的变动状况进行了分析。结果表明,经过13 a的伏季休渔,东海区带鱼产量稳定,幼带鱼密度指数也较稳定,高龄鱼比例有所提高,最小性成熟肛长有所增大,渔获带鱼平均肛长有增大的趋势。但是,由于高强度的捕捞压力,东海区带鱼群体组成小型化、低龄化、单位渔获量下降等生长型过度捕捞现象还比较明显,资源状况未有根本好转。Based on the dynamic monitoring datas of Trichiurus japonicus in the East China Sea region and some datas from other projects of Trichiurus japonicus, the dynamic situation of Trichiurus japonicus resouces are analysed in summer closed fishing in the East China Sea. The result shows that the total catch of Trichiurus japonicus remains at a high-yield level; the density index of juvenile individual is also with a high level; the ratio of the eider individual has improued, the minimal sexual matuity anus has increased and the average anal length of Trichiurus japonicus tends to an increasing situation after 13 years of summer closed fishing in the East China Sea, while the stock of Trichiurus japonicus is still smaller and younger age and the growth overfished phenomenon which unit catches decline is still obvious, due to the high press of catch. Resource situation has not fundamentalcy improued.

关 键 词：带鱼 资源动态 伏季休渔 东海区 

分 类 号：S932.4[农业科学—渔业资源]