The fishery and stock structure of Thunnus albacares off Andhra waters along western Bay of Bengal was studied from 2012 to 2015. The average annual landing of the species during the study period was 5,952 t contributing 32.9 % of the total tuna landings. Gill nets contributed 59 % of the catches, followed by hook and lines (34 %). Von Bertalanffy growth equation was L_t = 196.35 [1 – e^{–0.23 (t+0.0546)}] and natural mortality, fishing mortality and total mortality was 0.4, 0.71 and 1.11 with exploitation ratio of 0.64 and exploitation rate of 0.43. Annual average stock, standing stock biomass and maximum sustainable yield were 13,879 t, 8,383 t and 4,653 t, respectively. Yield per recruit and biomass per recruit estimated were 2584.7 g and 3640.4 g. The exploitation rate, yield and yield per recruit indicate the stock of T. albacares to be overexploited. To sustainably and optimally harvest the species, reduction in the present fishing effort by 60 % is necessary, thereby increasing the yield by 35.31 %. With overcapacity in the number of gillnetters and hook and line units operating in the waters off Andhra Pradesh, implementation of the recommended fleet size proposed by Central Marine Fisheries Research Institute by means of buy-back measures and strict adherence to Minimum Legal Size at harvest would ensure sustainable and optimum exploitation of the resource.

中文翻译：

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孟加拉湾西部安得拉水域附近的白鳍金枪鱼（Bonnaterre，1788）的渔业和种群结构

研究了2012年至2015年沿孟加拉西部海湾安得拉水域的白鳍金枪鱼的渔业和种群结构。在研究期间，该物种的年平均着陆量为5,952 t，占金枪鱼总着陆量的32.9％。刺网占渔获量的59％，其次是鱼钩和鱼钩（34％）。冯·贝塔朗菲的增长方程为L _t = 196.35 [1 – e ^{–0.23（t + 0.0546）}和自然死亡率，捕捞死亡率和总死亡率分别为0.4、0.71和1.11，剥削率为0.64，剥削率为0.43。年平均库存量为13879吨，现存生物量为83吨，最大可持续产量为4653吨。每个新兵的产量和每个新兵的生物量估计为2584.7 g和3640.4 g。剥削率，单产和单产表明单生丁香的存量被过度开发。为了可持续和最佳地收获该物种，有必要将目前的捕捞努力减少60％，从而使产量增加35.31％。由于在安得拉邦外海域操作的刺网和钩钓线单位的能力过剩，将通过回购措施和严格遵守捕捞时的最小法定规模来实施中央海洋渔业研究所建议的建议船队规模确保资源的可持续和最佳开发。