黄海不同型刺网的渔获选择性比较  

Fishing Capacity Comparison of Different Types of Gillnet in the Yellow Sea

作　　者：李显森[1] 郭瑞[1,2] 尤宗博 朱建成[1] 孙珊[1] LI Xiansen;GUO Rui;YOU Zongbo;ZHU Jiancheng;SUN Shan(Key Laboratory for Sustainable Utilization of Marine Fishery Resources,Ministry of Agriculture and Rural Affairs,Shandong Provincial Key Laboratory for Fishery Resources and Eco-environment,Yellow Sea Fisheries Research Institute,Chinese Academy of Fishery Sciences,Qingdao 266071,China;College of Marine Science and Environment,Dalian Ocean University,Dalian 116023,China)

机构地区：[1]中国水产科学院黄海水产研究所,农业农村部海洋渔业资源可持续利用重点开放实验室,山东省渔业资源与生态环境重点实验室,山东青岛266071 [2]大连海洋大学海洋与环境学院,辽宁大连116023

出　　处：《水产科学》2019年第4期451-457,共7页Fisheries Science

基　　金：农业部公益性行业科研专项(201203018)

摘　　要：为提高近海渔业资源养护型捕捞与管理技术,促进《全国海洋捕捞渔具目录》的实施,2014年9—10月在黄海进行了网目尺寸为40、50、60 mm的单片型刺网、双重型刺网和三重型刺网以及生产对照网的选择性对比试验。试验结果表明,相同网目尺寸的各型试验网的渔获种类间呈中等相似或极相似;渔获优势种为高眼鲽、细纹狮子鱼、黄、小黄鱼和白姑鱼,不同试验网的渔获优势种不同。40、50、60 mm的三重型刺网的单位捕捞努力量渔获量分别为相同网目尺寸的单片型刺网单位捕捞努力量渔获量的187%、174%和146%,对应的经济效益分别为单片型刺网经济效益的133%、112%和184%,小黄鱼幼鱼比例分别为单片型刺网的162%、342%和122%,高眼鲽幼鱼比例分别为单片型刺网的108%、277%和100%。渔获结构显示,单片型刺网对小黄鱼、鲐鱼和白姑鱼等纺锤型鱼类的选择性优于三重型刺网,而三重型刺网对高眼鲽、黄鮟鱇的选择性具有明显优势。In order to improve the fishing techniques and management level of offshore fishery resources,and to promote the implementation of National Marine Fishing Gear Catalog,selectivity between single gillnet(with the mesh sizes of 40 mm,50 mm,and 60 mm),double gillnet,trammel gillnet and productive fishing gear(control group)was compared in the Yellow Sea from September to October in 2014.The results showed that the catch species of different mesh sizes for each type of experimental fishing gear was medium,similar or very similar. The dominant species of experimental and productive fishing gear were Cleisthenes herzensteini,Liparis tanakae,Lophius litulon,Pseudosciaena polyactis and Argyrosomus argentatus. Compared with the CPUE the 40 mm was 187%,the 50 mm was 174% and the 60 mm was 146%;Corresponding economic benefits were 133%,112% and 184%. Compared the catch of proportion for P. polyactis juvenile of trammel gillnet with the same mesh sizes for single gillnet,the 40 mm was 162%,the 50 mm was 342% and the 60mm was 122%;Corresponding proportion of C. herzensteini juvenile were 108%,277% and 100%.The catch composition showed that the single gillnet had more selective for hammer fish than trammel gillnet,and that buttrammel gillnet selectivity for C. herzensteini and L. litulon had obvious advantages.

关 键 词：黄海 刺网 网目尺寸 选择性 渔获组成 捕捞性能 

分 类 号：S973.2[农业科学—捕捞与储运]