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Genetic mixed-stock analysis of short mackerel, Rastrelliger brachysoma, catches in the Gulf of Thailand: Evidence of transboundary migration of the commercially important fish
Fisheries Research ( IF 2.4 ) Pub Date : 2021-03-01 , DOI: 10.1016/j.fishres.2020.105823
Sirithorn Kongseng , Ratanavaree Phoonsawat , Worawit Wanchana , Akarapong Swatdipong

Abstract Short mackerel, Rastrelliger brachysoma, is one of commercially important marine species in the Gulf of Thailand. The mackerel resource has been faced with overfishing and sharply declined. Here, genetic mixed-stock analysis was performed using eleven microsatellite loci on 1675 short mackerel individuals caught, in 2014, from its four major fishing grounds of Thai waters in the Gulf of Thailand. Short mackerel populations from Thai, Cambodian, Vietnamese and Malaysian waters in the Gulf of Thailand were used as baselines. The mixed-stock analysis revealed that these populations significantly contributed to catches of the four fishing grounds in Thai water. The Samut Songkhram population, representing sedentary behavior, was the major contributor (52.71 %) to the total catch from the Inner Gulf of Thailand. The Surat Thani population dominantly contributed 46.23 % to the total catch from lower part of the Central Gulf of Thailand, where the fishing ground surrounds its spawning ground. The populations from Cambodia and Malaysia corporately contributed of 70.95 % and 87.88 % to the total catches from the Eastern Gulf of Thailand and upper part of the Central Gulf of Thailand, respectively. According to these analysis results, the populations from neighboring countries to Thailand displayed transboundary migration and significantly contributed to fishery catches in the Thai water. Therefore, profound sub-regional cooperation from Gulf of Thailand countries is required for effective fishery management of the short mackerel resource to be sustainable.

中文翻译:

泰国湾捕获的短鲭鱼(Rastrelliger brachysoma)的遗传混合种群分析:具有重要商业价值的鱼类跨界迁移的证据

摘要 短鲭(Rastrelliger brachysoma)是泰国湾重要的商业海洋物种之一。鲭鱼资源面临过度捕捞,急剧减少。在这里,使用 2014 年从泰国湾泰国水域的四个主要渔场捕获的 1675 只短鲭鱼个体的 11 个微卫星位点进行遗传混合种群分析。来自泰国湾的泰国、柬埔寨、越南和马来西亚水域的短鲭鱼种群被用作基线。混合种群分析显示,这些种群对泰国水域四个渔场的渔获量做出了重大贡献。代表久坐行为的夜功人口是泰国内湾总捕捞量的主要贡献者 (52.71%)。素叻他尼族群占泰国中央湾下游地区总渔获量的 46.23%,那里的渔场环绕其产卵场。柬埔寨和马来西亚的人口分别占泰国东部湾和泰国中部湾上部总产量的 70.95% 和 87.88%。根据这些分析结果,从邻国到泰国的人口表现出跨界迁移,对泰国水域的渔业捕捞量做出了重大贡献。因此,需要泰国湾国家开展深入的次区域合作,才能使短鲭鱼资源的有效渔业管理可持续。渔场围绕其产卵场。柬埔寨和马来西亚的人口分别占泰国东部湾和泰国中部湾上部总产量的 70.95% 和 87.88%。根据这些分析结果,从邻国到泰国的人口表现出跨界迁移,对泰国水域的渔业捕捞量做出了重大贡献。因此,需要泰国湾国家开展深入的次区域合作,才能使短鲭鱼资源的有效渔业管理可持续。渔场围绕其产卵场。柬埔寨和马来西亚的人口分别占泰国东部湾和泰国中部湾上部总产量的 70.95% 和 87.88%。根据这些分析结果,从邻国到泰国的人口表现出跨界迁移,对泰国水域的渔业捕捞量做出了重大贡献。因此,需要泰国湾国家开展深入的次区域合作,才能使短鲭鱼资源的有效渔业管理可持续。分别占泰国东部湾和泰国中部湾上部总渔获量的 88%。根据这些分析结果,从邻国到泰国的人口表现出跨界迁移,对泰国水域的渔业捕捞量做出了重大贡献。因此,需要泰国湾国家开展深入的次区域合作,才能使短鲭鱼资源的有效渔业管理可持续。分别占泰国东部湾和泰国中部湾上部总渔获量的 88%。根据这些分析结果,从邻国到泰国的人口表现出跨界迁移,对泰国水域的渔业捕捞量做出了重大贡献。因此,需要泰国湾国家开展深入的次区域合作,才能使短鲭鱼资源的有效渔业管理可持续。
更新日期:2021-03-01
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