江苏沿岸单根方定置作业主要经济鱼类幼鱼的监测  

Monitoring and studying on main young economic fish in fixed fishing gear of one-peg stow net along coastal of Jiangsu

作　　者：汤建华[1] 李长松[2] 仲霞铭[1] 刘培廷[1] 吴磊[1] 

机构地区：[1]江苏省海洋水产研究所,江苏南通226007 [2]中国水产科学研究院东海水产研究所,上海200090

出　　处：《水产学报》2006年第3期353-358,共6页Journal of Fisheries of China

基　　金：江苏省财政厅;江苏省海洋与渔业局2004年度海洋与渔业专项;苏海计[2004]76号

摘　　要：单根方是吕泗渔场一种主要的定置作业渔具,其产量占江苏海洋捕捞产量一定的比重。根据监测,自4月份开始,主要经济鱼类幼鱼开始在渔获物中出现,随着时间推移,幼鱼比例逐渐增加。6月份单根方渔获样品中经济鱼类幼鱼尾数比例1990-2004年期间年平均为48.63%,重量比例为35.86%,其中小黄鱼(Larimichthys polyactis)、银鲳(Pampas argenteus)、带鱼(Trichiurus japonicus)尾数合计比例年平均为45.21%,重量合计比例年平均为33.29%。7、8月份样品中主要是小黄鱼、银鲳幼鱼,9月份鱼类幼鱼比例降至20%左右。本文着重对6月份单根方作业经济幼鱼进行了分析,建议对定置作业休渔时间进行调整,以利于保护经济鱼类幼鱼资源。One-peg stow nets is a kind of main fixed fishing gear in lusi fishing ground, its output occupies Jiangsu ocean total catch proportionably. According to monitoring, begin in April, main young economic fish appear in catches. As time passes, young fish＇ s proportion increases gradually. Young economic fish quantifies＇ proportion annual average equals to 48.6% in the sample, in the period of 1990- 2004 in one-peg stow nets in June, and weights＇ proportiott equals to 35.86%, among them, Larimichthys polyactis, Pampas argenteus, Trichiurus japonicus total quantities＇ proportion is 45.21%, total weights＇proportion is 33.29%. In the sample there is mainly young Larimichthys polyactis and Pampas argenteus in July and August, young fish＇s proportion drops to about 20% in September. This paper emphatically analyses economic young fish in one-peg stow nets in June so as to propose to adjust the fishing off season thus protecting resources of Young economic fish in the area.

关 键 词：单根方 定置渔业 监测 经济幼鱼 资源保护 江苏 

分 类 号：S932.4[农业科学—渔业资源]