您好，欢迎访问中国水产科学研究院 机构知识库！
中国水产科学研究院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Selectivity of crab pots with escape vents and the optimal vent height for reducing the catch of sublegal swimming crab in the East China Sea pot fishery

文献类型： 外文期刊

作者： Zhang, Jian 1 ; Zhang, Honglin 1 ; He, Pingguo 5 ; Fei, Jiaojiao 1 ; Chu, Wenhua 1 ; Shi, Jiangao 6 ;

作者机构： 1.Shanghai Ocean Univ, Coll Marine Sci, Shanghai, Peoples R China

2.Natl Engn Res Ctr Ocean Fisheries, Shanghai, Peoples R China

3.Minist Educ, Key Lab Sustainable Exploitat Ocean Fisheries Reso, Shanghai, Peoples R China

4.Minist Agr & Rural Affairs, Key Lab Ocean Fisheries Explorat, Shanghai, Peoples R China

5.Univ Massachusetts Dartmouth, Sch Marine Sci & Technol, New Bedford, MA USA

6.Chinese Acad Fishery Sci, East China Sea Fisheries Res Inst, Shanghai, Peoples R China

关键词： Size selectivity; Crab pots; Escape vent; Portunus trituberculatus; Optimal vent height; Exploitation pattern; SELECT model

期刊名称：FISHERIES RESEARCH （ 影响因子：2.4； 五年影响因子：2.6 ）

ISSN： 0165-7836

年卷期： 2024 年 274 卷

页码：

收录情况： SCI

摘要： Catching and subsequent discarding of sublegal-sized swimming crab Portunus trituberculatus in the pot fishery may result in increased unaccounted fishing mortality and contribute to overexploitation of the crab stocks in the East China Sea. Developing technical measures and implementing related regulations to improve the size selection of pots to reduce the catch of sublegal crab has become urgent. In this study, we evaluated the size selectivity of pots with rectangular escape vents of different opening heights (25 mm, 28 mm, 30 mm and 33 mm) through comparative fishing experiments and by employing the SELECT model. The results show that the installation of escape vents significantly reduced the catch per pot (in numbers) of total and sublegal swimming crabs, and significantly increased the proportion of legal-sized crabs for most vented pots except the 25 mm vent height. A significant positive linear relationship was found between escape vent height and the 50% retention carapace width, selection range and fishing power. Increasing the height of the escape vent had substantial effect on the exploitation pattern for swimming crab and the pot with a 28 mm height escape vent seemed to be the optimal design, releasing 67.4% of sublegal-sized crab and maintaining 94.8% of legal-sized crabs. Results showing that a pot with an escape vent that significantly reduces sublegal crab catch, while maintaining catch efficiency for legal-sized crabs, is positive for the fishery and supports the implementation of escape vents in the East China crab pot fishery.

  • 相关文献
作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：中国水产科学研究院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台