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Maximum Sustainable Yield Estimates of Marine Captured Shrimp Fishery of the Bay of Bengal, Bangladesh by Using Surplus Production Model
Thalassas: An International Journal of Marine Sciences ( IF 0.7 ) Pub Date : 2020-03-14 , DOI: 10.1007/s41208-020-00198-9
Ehsanul Karim , Liu Qun , Shanur Jahedul Hasan , M. Zulfikar Ali , M. Enamul Hoq , M. Yahia Mahmud

Surplus-production models (SPMs) are the foremost conventional methodical tool for assessing fish stock when the data comprised of a time series of catches for an exploited population. Annual catch and effort data of 24 years from 1991 to 2014 were analyzed to estimate the Maximum Sustainable Yield (MSY) of marine captured shrimps of Bangladesh by using packages of CEDA and ASPIC. The maximum catch was found 4188 Mt in 1992 and the minimum was 2175 Mt in 2006. In CEDA, the MSY was estimated by using the initial proportion (IP) value of 0.7 because the starting catch was approximately 70% of the maximum catch. The estimated MSY values of Fox and Schaefer from CEDA with two error assumptions were 2527 Mt and 2584 Mt; 2794 Mt and 2655 Mt, respectively. Besides, the estimated MSY results of Fox and Logistic (Schaefer) models from the ASPIC packages were 2472 Mt and 2347 Mt respectively. In conclusion, the estimated MSY values were smaller than the last catch (2733Mt) reveals the overfished stock of marine captured shrimp fishery which needed instant management strategies for sustainability.



中文翻译:

利用剩余生产模型的孟加拉国孟加拉湾海洋捕捞虾类渔业最大可持续产量估算

当数据包括被剥削种群的捕捞时间序列时,剩余生产模型(SPM)是评估鱼类种群的最传统的方法性工具。通过使用CEDA和ASPIC软件包,分析了1991年至2014年这24年的年度捕捞量和努力量数据,以估计孟加拉国海洋捕捞虾的最大可持续产量(MSY)。在1992年发现最大渔获量4188吨,在2006年发现最小渔获量2175吨。在CEDA中,MSY是使用初始比例(IP)值0.7估算的,因为起始渔获量约为最大渔获量的70%。来自CEDA的Fox和Schaefer的MSY估计值有两个误差假设,分别为2527 Mt和2584Mt。2794吨和2655吨。除了,通过ASPIC软件包估算的Fox和Logistic(Schaefer)模型的MSY结果分别为2472 Mt和2347Mt。总之,估计的MSY值小于最后一个捕获量(2733Mt),这表明海洋捕获虾类渔业的过度捕捞种群需要即时的管理策略来实现可持续性。

更新日期:2020-03-14
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