长江赣皖段中华绒螯蟹成体资源变动及资源保护对策

发布时间：2018-03-05 00:28

本文选题：中华绒螯蟹　切入点：蟹汛　出处：《浙江农业学报》2016年04期 　论文类型：期刊论文

【摘要】：采用沿江实地调查、跟船监测、渔民访谈和渔政部门核实相结合的方式,调查了2008—2014年长江中下游江西、安徽段中华绒螯蟹成体资源变动情况。研究表明:长江中下游江西、安徽段汛期时间和捕捞期均有变化,中游捕捞期增加了20~30 d,下游捕捞期减少了7~12 d;成蟹渔获物平均体质量达到了大蟹标准,肥满度均值达到了一级蟹标准。研究还发现,2008—2014年中华绒螯蟹捕捞量呈现一个先升后降的"∧"形曲线,与同期长江水质污染物总量存在显著的负相关关系。在此基础上,针对长江水系中华绒螯蟹资源保护,提出了强化长江污染物排放总量控制,设立长江口中华绒螯蟹产卵场保护区;加强长江渔政管理力度,畅通中华绒螯蟹洄游通道;继续加大长江中华绒螯蟹增殖放流力度,采取生态调度等管理对策。
[Abstract]:By means of field investigation along the Yangtze River, monitoring with ships, interview with fishermen and verification by fishery administration departments, the changes of adult resources of Eriocheir sinensis in Jiangxi and Anhui sections of the middle and lower reaches of the Yangtze River from 2008 to 2014 were investigated. The results show that: Jiangxi Province in the middle and lower reaches of the Yangtze River, The flood season and fishing season in Anhui have changed, the fishing period in the middle reaches has increased by 20 ~ 30 days, the fishing period in the lower reaches has been reduced by 7 ~ 12 days, and the average body mass of adult crab has reached the standard of large crab. It was also found that the catch of Eriocheir sinensis (Eriocheir sinensis) from 2008 to 2014 showed a curve of "A" which rose first and then decreased, which had a significant negative correlation with the total amount of pollutants in water quality of the Yangtze River in the same period. In view of the resource protection of Eriocheir sinensis in the Yangtze River system, it is proposed to strengthen the total discharge control of pollutants in the Yangtze River, to establish a protected area of spawning grounds for Eriocheir sinensis in the Yangtze River Estuary, to strengthen the management of fishery administration on the Yangtze River, and to open the migration channels of Chinese mitten crab. Continue to increase the Yangtze River mitten mitten crab proliferation and release, ecological regulation and other management measures.
【作者单位】：中国水产科学研究院东海水产研究所农业部东海与远洋渔业资源开发利用重点实验室;上海海洋大学水产与生命学院;江西省水产科学研究所中心实验室;
【基金】：公益性行业(农业)科研专项(201203065) 农业部东海与远洋渔业资源开发利用重点实验室2014年度开放课题(2014K02)
【分类号】：S937

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