首页|南海北部兔头鲀属资源利用状况及限额捕捞量研究

南海北部兔头鲀属资源利用状况及限额捕捞量研究

扫码查看
根据2008-2022年渔港渔业生产抽样调查数据,开展了南海北部兔头鲀属(Lagocephalus)资源的评估,统计发现南海北部的兔头鲀属被拖网、刺网、围网、杂渔具等捕捞,捕捞量分别占其总渔获量46.90%、39.69%、5.19%和8.22%.采用剩余产量模型对18个单位捕捞努力量渔获量数据进行了分析.平衡Schaefer模型计算的最大可持续产量为46,228.04吨,平衡Fox模型计算的最大可持续产量为39,109.44吨,非平衡产量模型计算的最大可持续产量为36,788.57吨.刺网151-200千瓦和刺网50千瓦以下这两个作业方式与功率段在2022年被判定为捕捞努力量水平投入过度,并且当前资源存量低于初始资源量的20%的警戒线,故应限产,以利于资源的恢复增长.考虑到既要维护渔业生产稳定,又要恢复种群,建议未来五年每年的总可捕捞量设定为1.5万吨.积极管控约束刺网50千瓦以下在南海北部的幼鱼繁育保护区内的生产活动,促进对补充群体的保护;加强兔头鲀属渔业生物学基础研究,开发人工增殖技术.
A study on the resource utilization status and limited catching capacity of the Lagocephalus in the Northern South China Sea
According to the sampling survey data of fishery production from fishing ports along the Northern South China Sea from 2008 to 2022,the resources of Lagocephalus are evaluated.The production of Lagocephalus mainly consists of trawl net,gill net,purse seine and miscellaneous gears,accounting for 46.90%,39.69%,5.19%and 8.22%of the total catch,respectively.Eighteen CPUE data are analyzed by surplus yield model.The maximum sustainable yield is 46,228.04 tons inferred by equilibrium Schaefer model.The maximum sustainable yield is 39,109.44 tons inferred by equilibrium Fox model.The maximum sustainable yield is 36,788.57 tons inferred by non-equilibrium production model.Overfishing occurred in gill net with main engine power 151-200kW and gillnet with main engine power below 50 kW in 2022.The current resource stock is below the warning line of 20%of the initial resource quantity,therefore,catch should be limited in order to rebuild stock.Considering the need to maintain the stability of fishery production and rebuild stocks,it is recommended that the total allowable catch be set at 150 thousand tons per year in for the next five years.Fishing effort should be controlled that input by gillnet with main engine power below 50kW in juvenile breeding reserves in the Northern South China Sea to promote the protection of recruitment.Basic research on fishery biology of Lagocephalus and artificial releasing techniques are needed to develop.

LagocephalusNorthern South China Sealimited catchingtotal allowable catch

吴京桐、李璐、熊美玲、李政凯、王宇航、冯波

展开 >

广东海洋大学水产学院,广东湛江 524088

广东省南海深远海渔业管理与捕捞工程技术研究中心,广东湛江 524088

兔头鲀属 南海北部 限额捕捞 总可捕捞量

国家重点研发计划

2018YFD0900906

2024

中国渔业经济
中国水产科学研究院,中国农业发展集有限公司,中国海洋大学,上海海洋大学,中国水产学会

中国渔业经济

影响因子:0.616
ISSN:1009-590X
年,卷(期):2024.42(2)
  • 35