星康吉鳗单位补充量渔获量模型的不确定性评估
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作者简介:

杨仕诚(1999–),男,硕士研究生,研究方向为种群动力学.E-mail:yangsc0729@163.com

基金项目:

国家重点研发计划项目(2018YFD0900906, 2018YFD0900904).


Assessment of the uncertainty in yield per recruitment model of whitespotted conger, Conger myriaster
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    摘要:

    为研究资源评估模型的不确定性及其对管理参考点的影响, 以东、黄海星康吉鳗(Conger myriaster)为研究对象, 对单位补充量渔获量(YPR)模型各参数进行敏感性分析, 探究影响单位补充量渔获量和生物学参考点估算的关键参数, 并利用蒙特卡洛方法模拟 YPR 模型中的参数不确定性, 评估不确定性存在下星康吉鳗种群的资源现状及可能产生的风险。研究结果表明, 当前东、黄海星康吉鳗的捕捞死亡系数 Fcur 远高于 F0.1 的估计值, 接近 Fmax。 自然死亡系数 M、生长系数 K 和开捕年龄 tc 是估算生物学参考点 Fmax F0.1 的敏感性参数, 而幂指数系数 b、渐近体长 L、生长系数 K 和自然死亡系数 M 则是计算渔获量的敏感性参数。在参数不确定性的影响下, 对东、黄海星康吉鳗渔业状况产生误判的概率, 即 P (Fcurf0.1)和 p="" (fcur="">Fmax), 将随不确定水平的升高而升高。F0.1相比于 Fmax 在不同不确定水平下较为稳定, 更适合作为星康吉鳗管理的目标参考点。总体而言, 目前东、黄海星康吉鳗接近生长型过度捕捞状态, 资源开发水平不合理, 需要对其资源进行养护以维持可持续发展。本研究考虑了不确定性因素对东、黄海星康吉鳗资源评估的影响, 以期为渔业管理者制定并实施相应的管理策略提供参考。</f0.1)和>

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杨仕诚,张崇良.星康吉鳗单位补充量渔获量模型的不确定性评估[J].中国水产科学,2023,30(2):226-235
YANG Shicheng, ZHANG Chongliang. Assessment of the uncertainty in yield per recruitment model of whitespotted conger, Conger myriaster[J]. Journal of Fishery Sciences of China,2023,30(2):226-235

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  • 在线发布日期: 2023-04-20
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