东海区帆式张网渔业资源利用结构的动态分析

Dynamics analysis of available resource structure for stow net fisheries in East China Sea Region

以 1997、1998年“苏海研 1、2号”帆式张网资源监测调查船 4 0 2 0网次的调查结果及 114次渔获随机取样的分析结果为依据 ,对东海区帆式张网渔业资源利用结构的动态进行分析研究。结果表明 ,东海区帆式张网渔业资源结构春季以小黄鱼、银鲳、黄鲫 ,夏季以小黄鱼、带鱼、黄鲫 ,秋季以小黄鱼、带鱼、银鲳 ,冬季以小黄鱼、带鱼为主要利用对象 ;主要经济鱼类小黄鱼、带鱼、银鲳的幼鱼渔获量比例以夏季最高为 76 .0 6 % ,其余依次为秋季、春季和冬季 ,分别为 56 .98%、4 8.88%和 4 2 .33%。

According to the survey data of 4 020 nets and the analysis results of 114 random samples by stow net from“Suhaiyan No.1 and No.2” in 1997 and in 1998, it is concluded that the main utilizable objects are Pseudosciaena polyactis,Pampus argenteus, Setipinna taty in spring, Pseudosciaena polyactis, Trichirus haumela, Setipinna taty in summer, Pseudosciaena polyactis,Trichirus haumela,Pampus argenteus in autumn and Pseudosciaena polyactis, Trichirus haumela in winter. The juvenile catch yield percentage of main commercial fishes of Pseudosciaena polyactis, Trichirus haumela, Pampus argenteus was 76.06% in the summer, the highest in the year, followed by the fall, spring and winter, which were 56.98%, 48.88% and 42.33%, respectively.