| 帆张网网囊网目尺寸对小黄鱼的选择性 |
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| 引用本文： | 徐国强,张洪亮,虞宝存,陈峰,朱文斌.帆张网网囊网目尺寸对小黄鱼的选择性[J].水产学报,2019,43(6):1539-1548. |
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| 作者姓名： | 徐国强 张洪亮 虞宝存 陈峰 朱文斌 |
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| 作者单位： | 浙江省海洋水产研究所, 浙江 舟山 316021;农业农村部重点渔场渔业资源观测实验站, 浙江 舟山 316021;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,浙江省海洋水产研究所, 浙江 舟山 316021;农业农村部重点渔场渔业资源观测实验站, 浙江 舟山 316021;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,浙江省海洋水产研究所, 浙江 舟山 316021;农业农村部重点渔场渔业资源观测实验站, 浙江 舟山 316021;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,浙江省海洋水产研究所, 浙江 舟山 316021;农业农村部重点渔场渔业资源观测实验站, 浙江 舟山 316021;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,浙江省海洋水产研究所, 浙江 舟山 316021;农业农村部重点渔场渔业资源观测实验站, 浙江 舟山 316021;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 |
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| 基金项目： | 浙江省远洋渔业资源探测及捕捞技术研发（2018C02026）；浙江省海洋与渔业局项目；浙江省沿岸定置张网网格化管理模式研究与示范专项（2016F30018） |
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| 摘 要： | 为探索帆张网不同网目尺寸网囊对小黄鱼的选择性,2017年4月在舟山渔场中部用传统方法(套网法)对5种不同网目尺寸(35 mm、45 mm、55 mm、60 mm、65 mm)网囊开展了选择性实验。应用Logistic模型对小黄鱼选择性曲线进行拟合,采用极大似然法估算模型参数。结果显示:①实验期间主要捕获对象为小黄鱼,数量和重量分别占比66.94%和84.48%,体长范围71～190 mm,平均体长124 mm;②随着网目尺寸的增加,网囊中小黄鱼优势体长总体上大于套网;③网囊网目尺寸为35 mm、45 mm、55 mm、60 mm和65 mm时,小黄鱼L50分别为80.425 mm、103.496 mm、119.711 mm、122.676 mm和137.026 mm,SR分别为50.202 mm、52.540 mm、61.120 mm、41.730 mm和63.560 mm,L50呈现逐渐增大的趋势;④小黄鱼网囊网目尺寸(m)与50%选择体长(L50)的关系为L50=1.776 m+20.300 (R2=0.980);⑤5种网目尺寸网囊中小黄鱼尾数逃逸率均高于重量逃逸率,网囊网目尺寸≤45 mm时,其尾数及重量逃逸率均低于5%,网囊网目尺寸≥55 mm时,其尾数及重量逃逸率均超过10%,甚至可达50%。综合分析,目前实施的55 mm网目尺寸能有效释放小黄鱼幼鱼,但网目尺寸仍需扩大。
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| 关 键 词： | 小黄鱼 帆张网 网目尺寸 选择性 东海区 |
| 收稿时间： | 2017/10/24 0:00:00 |
| 修稿时间： | 2018/4/24 0:00:00 |
Selectivity of different mesh size codends of canvas stow net for Larimichthys polyactis |
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| XU Guoqiang,ZHANG Hongliang,YU Baocun,CHEN Feng and ZHU Wenbin.Selectivity of different mesh size codends of canvas stow net for Larimichthys polyactis[J].Journal of Fisheries of China,2019,43(6):1539-1548. |
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| Authors: | XU Guoqiang ZHANG Hongliang YU Baocun CHEN Feng and ZHU Wenbin |
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| Institution: | Marine Fisheries Research Institute of Zhejiang Province, Zhoushan 316021, China;Scientific Observing and Experimental Station of Fishery Resources for Key Fishing Grounds, Ministry of Agriculture and Rural Affairs, Zhoushan 316021, China;Key Laboratory of Sustainable Utilization of Technology Research for Fishery Resource of Zhejiang Province, Zhoushan 316021, China,Marine Fisheries Research Institute of Zhejiang Province, Zhoushan 316021, China;Scientific Observing and Experimental Station of Fishery Resources for Key Fishing Grounds, Ministry of Agriculture and Rural Affairs, Zhoushan 316021, China;Key Laboratory of Sustainable Utilization of Technology Research for Fishery Resource of Zhejiang Province, Zhoushan 316021, China,Marine Fisheries Research Institute of Zhejiang Province, Zhoushan 316021, China;Scientific Observing and Experimental Station of Fishery Resources for Key Fishing Grounds, Ministry of Agriculture and Rural Affairs, Zhoushan 316021, China;Key Laboratory of Sustainable Utilization of Technology Research for Fishery Resource of Zhejiang Province, Zhoushan 316021, China,Marine Fisheries Research Institute of Zhejiang Province, Zhoushan 316021, China;Scientific Observing and Experimental Station of Fishery Resources for Key Fishing Grounds, Ministry of Agriculture and Rural Affairs, Zhoushan 316021, China;Key Laboratory of Sustainable Utilization of Technology Research for Fishery Resource of Zhejiang Province, Zhoushan 316021, China and Marine Fisheries Research Institute of Zhejiang Province, Zhoushan 316021, China;Scientific Observing and Experimental Station of Fishery Resources for Key Fishing Grounds, Ministry of Agriculture and Rural Affairs, Zhoushan 316021, China;Key Laboratory of Sustainable Utilization of Technology Research for Fishery Resource of Zhejiang Province, Zhoushan 316021, China |
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| Abstract: | |
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| Keywords: | Larimichthys polyactis canvas stow net mesh size selectivity the East China Sea |
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