丁香鱼围网副渔获物鱼类组成及分布特征  

Fish Composition and Distribution Characteristics of By-Catch of Double-Vessel Bag Seine

作　　者：朱海晨 朱文斌 张亚洲[1,2] 张洪亮 蒋日进[1,2] 卢占晖 崔国辰[1] 魏裙倚 ZHU Haichen;ZHU Wenbin;ZHANG Yazhou;ZHANG Hongliang;JIANG Rijin;LU Zhanhui;CUI Guochen;WEI Qunyi(Institute of Marine and Fisheries of Zhejiang Ocean University,Zhoushan 316021,China;Key Laboratory of Sustainable Utilization of Technology Research for Fishery Resources of Zhejiang Province,Scientific Observing and Experimental Station of Fishery Resources for Key Fishing Grounds,Ministry of Agriculture and Rural Affairs,Zhejiang Marine Fisheries Research Institute,Zhoushan 316021,China)

机构地区：[1]浙江海洋大学海洋与渔业研究所,浙江舟山316021 [2]浙江省海洋水产研究所,农业农村部重点渔场渔业资源科学观测实验站,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：《水产科学》2022年第4期573-580,共8页Fisheries Science

基　　金：国家重点研发计划项目(2019YFD0901505);浙江省重点研发计划项目(2018C02026);浙江省自然科学基金资助项目(LGN21C190005).

摘　　要：根据2019年4—6月丁香鱼围网渔业生产数据,对其副渔获物鱼类组成及分布特征进行研究。研究结果显示,丁香鱼围网共捕捞副渔获物鱼类25种,隶属于7目19科。相对重要指数结果显示:副渔获物中未出现常见种;一般种为7种,包括日本鲭、褐菖鲉、青鳞小沙丁鱼、中华侧带小公鱼、蓝圆鲹、带鱼、银鲳;其余为少见种。日本鲭平均体质量为1.38g,优势叉长为21~50mm;褐菖鲉平均体质量为0.45g,优势体长为21~30mm;青鳞小沙丁鱼平均体质量为0.52g,优势叉长为21~50mm;中华侧带小公鱼平均体质量为2.12g,优势叉长为61~70mm;蓝圆鲹平均体质量为0.45g,优势叉长为10~40mm;带鱼平均体质量为0.74g,优势肛长为21~50mm;银鲳平均体质量为1.84g,优势叉长为31~70 mm。日本鲭、青鳞小沙丁鱼、带鱼、中华侧带小公鱼、银鲳主要分布在浙江南部和中部近岸海域,其平均相对渔获密度分别为2.46×10^(3)、0.80×10^(3)、1.07×10^(3)、1.48×10^(3)、1.18×10^(3)尾/h;褐菖鲉的平均相对渔获密度为4.54×10^(3)尾/h,主要分布在浙江南部近岸岛礁海域;蓝圆鲹的平均相对渔获密度为1.32×10^(4)尾/h,主要分布在浙江中北部近岸海域。相关研究结果可为丁香鱼围网捕捞作业的科学管理提供参考。According to the production data of double-vessel bag seine fisheries from April to June,2019,we analyzed the fish composition and distribution characteristics of by-catch of double-vessel bag seine.The results showed that the double-vessel bag seine along the coast of Zhejiang mainly caught juvenile Cape anchovy Engraulis japonicus,and caught 25 species of by-catch fish belonging to 7 orders and 19 families.The average body weight of blue mackerel Scomber japonicus was 1.38 g,with dominant fork length of 21—50 mm.The average body weight of the marbled rockfish Sebastiscus marmoratus was 0.45 g,with the dominant fork length of 21—30 mm.The average body weight of scaled sardine Sardinella zunasi was 0.52 g,with the dominant fork length of 21—50 mm.The China anchovy Stolephorus chinensis had average body weight of 2.12 g,with the dominant fork length of 61—70 mm.The average body weight of amberfish Decapterus maruadsi was 0.45 g,with the dominant fork length of 10—40 mm.The average body weight of Atlatic cutlassfish Trichiurus lepturus was 0.74 g,with the dominant anal length of 21—50 mm.The average body weight of butterfish Pampus argenteus was 1.84 g,with the dominant fork length of 31—70 mm.By-catch blue macherel,marbled rockfish,scaled sardine,China anchovy,amberfish,Atlatic cutlassfish,and butterfish were general species.The average relative catch densities of S.japonicus,S.zunasi,T.lepturus,S.chinensis and P.argenteus were 2.46×10^(3)ind./h,0.80×10^(3)ind./h,1.07×10^(3)ind./h,1.48×10^(3)ind./h,and 1.18×10^(3)ind./h,which were mainly distributed in the coastal waters of southern and central Zhejiang.The average relative catch density of S.marmoratus was 4.54×10^(3)ind./h,which was mainly distributed in the coastal islands and reefs in southern Zhejiang.The average relative catch density of amberfish was 1.32×104 ind./h,which was mainly distributed in the central and northern waters of Zhejiang Province.The findings can provide reference for improving the management of double-vessel bag sei

关 键 词：丁香鱼围网 副渔获物 分布特征 浙江沿岸 

分 类 号：S931.9[农业科学—渔业资源]