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Stock assessment of Scomberomorus commerson (Kingfish) fishery of Oman: Perspectives of sustainability
Regional Studies in Marine Science ( IF 2.1 ) Pub Date : 2021-08-10 , DOI: 10.1016/j.rsma.2021.101970
Ahmed M. Al-Shehhi 1 , Sachinandan Dutta 1 , Sourav Paul 2, 3
Affiliation  

Scomberomorus commerson (here after ‘Kingfish’) is the choicest table fish of the Gulf Cooperation Council (GCC) region and the most valuable finfish of Oman. Catch-effort data from 2000 to 2019 of Oman’s Kingfish fishery was fit to Schaefer model (log-normal assumption) for estimating maximum sustainable yield (MSY) and biological reference points (BRPs). Carrying capacity (K), catchability coefficient (q), population growth rate (r) and MSY of Kingfish were 36,745 tonnes, 0.0000161, 0.382 and 3,507 tonnes, respectively. At present, fishing effort (ENOW) (i.e. number of boats) is 18,982, which is beyond the sustainable limit i.e. EMSY= 11,846 and if the number of boats reaches to 23,692 then Kingfish stock may collapse. All the BRPs are higher than their sustainable limits, which indicate Kingfish stock is overfished. Stock Reduction Analysis suggests that the stock was in the safe zone between 2005 and 2007, it was in the overfishing zone from 2008 to 2012 and 2013 onwards the stock is in the overfished zone. A complete ban on Kingfish fishing in Oman may allow the stock to rebuild to Biomass at Maximum Sustainable Yield in three years or limiting the annual catch at 1,500 tonnes/year till 2026 may yield the same result. A transboundary management of Kingfish fishery is suggested for the GCC region. Forming a joint scientific council for monitoring and facilitating data availability, similar ban periods, mesh size regulations and a ‘payment for ecosystem services’ scheme may lead Kingfish fishery of the GCC region towards sustainability.



中文翻译:

阿曼 Scomberomorus commerson (Kingfish) 渔业的种群评估:可持续性的观点

Scomberomorus commerson(此处称为“金鱼”)是海湾合作委员会 (GCC) 地区最优质的食用鱼,也是阿曼最有价值的有鳍鱼。阿曼翠鸟渔业 2000 年至 2019 年的捕捞努力数据符合 Schaefer 模型(对数正态假设),用于估计最大可持续产量 (MSY) 和生物参考点 (BRP)。金鱼的承载能力(K)、可捕性系数(q)、种群增长率(r)和 MSY 分别为 36,745 吨、0.0000161、0.382 和 3,507 吨。目前,捕捞努力量(现在)(即船只数量)为 18,982,超出可持续限制即 MSY=11,846 艘,如果船只数量达到 23,692 艘,那么 Kingfish 的库存可能会崩溃。所有 BRP 均高于其可持续极限,这表明 Kingfish 种群被过度捕捞。种群减少分析表明,2005 年至 2007 年种群处于安全区,2008 年至 2012 年处于过度捕捞区,2013 年以后种群处于过度捕捞区。在阿曼全面禁止捕捞金鱼可能会使种群在三年内以最大可持续产量重建为生物量,或将年捕捞量限制在 1,500 吨/年至 2026 年可能会产生相同的结果。建议在海湾合作委员会地区对金鱼渔业进行跨界管理。成立联合科学委员会,以监测和促进数据的可用性、类似的禁令期、

更新日期:2021-08-20
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