基于渔获群落多样性指标的深水流刺网渔具作业性能分析  

Catch Community Diversity Index Based Performance Analysis of Deep Water Drift Net

作　　者：徐国强[1,2,3] 李鹏飞 张洪亮[1,2,3] 李德伟 朱文斌[1,2,3] XU Guoqian;LI Pengfei;ZHANG Hongliang;LI Dewei;ZHU Wenbin(Marine Fisheries Research Institute of Zhejiang Province,Zhoushan,Zhejiang 316021,China;Scientific Observing and Experimental Station of Fishery Resources for Key Fishing Grounds,Ministry of Agriculture,Zhoushan,Zhejiang 316021 ,China;Key Laboratory of Sustainable Utilization of Technology Research for Fishery Resource of Zhejiang Province,Zhoushan,Zhejiang 316021, China)

机构地区：[1]浙江省海洋水产研究所,浙江舟山316021 [2]农业部重点渔场渔业资源观测实验站,浙江舟山316021 [3]浙江省海洋渔业资源可持续利用技术研究重点实验室,浙江舟山316021

出　　处：《海洋湖沼通报》2019年第2期70-80,共11页Transactions of Oceanology and Limnology

基　　金：浙江省重点研发计划项目(2018C02026;2019C02056);浙江省海洋与渔业局项目"浙江渔场渔业资源动态监测";浙江省沿岸定置张网网格化管理模式研究与示范(2016F30018)资助

摘　　要：根据在东海区开展的3种型深水流刺网选择性试验数据,对3种型深水流网渔获组成、多样性及渔获性能进行了分析比较研究。结果表明:(1)本次试验共捕获33种渔获物,包括鱼类28种、头足类3种、甲壳类2种,其中3种型刺网均捕获种类8种;(2)3种型刺网优势种存在差异,日本方头鱼和黄鲷为共同优势种;(3)3种型刺网捕获种类多样性指数(D值、H’值、J’值)均不存在显著性差异(P>0.05),但渔获种类差异明显,3种型刺网两两比较种类Sorensen相似度均低于50%;(4)同型刺网相邻网目尺寸Bray-Curtis相似性较高,随着网目间距增加,相似度逐渐减低,以重量和尾数计算的相似性基本趋于一致;(5)3种型刺网随网目尺寸的增加(50～70mm),其W统计值(-0.113～0.040)总体上呈现依次增大的趋势,干扰程度逐渐较低。从生态多样性保护角度,增大网目尺寸是目前保护东海区底层生物多样性最有效的方式之一。Based on the selective test data of three kinds of gillnets in the East China Sea,species com position,community diversity and catching performance were analyzed,The results showed that(1)a total of 33 species were captured,which included fish(28 species),cephalopods(3 species)and crustaceans(2 species),8 species each gillnet in average;(2)the dominant species were different among gillnets,and liranchiostrtfus japonicas and Dentex tuminfrons were common;(3)the diversity indices(D,H'and J')were similar among gillnets(p>0.05>while the species captured were different.and the Sorensen similarity was≤50%;(4)the Sorensen similarity was similar between adjacent mesh sizes of gillnets in terms of number and biomass,and the similarity decreased gradually with the increase of mesh space;(5)W(0.113-0.040)increased with the increase of mesh size(50-70mm),and the degree of impact decreased gradually,In order to protect the ecological diversity,increasing mesh size is one of the most effective ways.

关 键 词：东海区 深水流网 种类组成 多样性 ABC曲线 

分 类 号：S932.4[农业科学—渔业资源]