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Position: Home > Articles > Stock assessment of albacore Thunnus alalungain the Indian Ocean Progress in Fishery Sciences 2014,35 (1) 1-8

印度洋长鳍金枪鱼资源评估

作  者：
朱江峰;戴小杰;官文江
单  位：
大洋渔业资源可持续开发省部共建教育部重点实验室
关键词：
长鳍金枪鱼;资源评估;管理;印度洋
摘  要：
本研究运用年龄结构资源评估模型ASAP,利用最新的渔业数据和生物学研究成果,对印度洋长鳍金枪鱼资源进行了评估。结果显示,主要资源变量捕捞死亡系数(F)、产卵亲体生物量(SSB)和生物学参考点受亲体-补充量关系的陡度参数(h)的影响很大。假设陡度参数h=0.7、0.8、0.9时,最大持续产量(MSY)分别为25 268t、27 414t、51 924t,当前(2010年初)F与FMSY之比分别为2.85、2.32、1.11,当前渔获量与MSY之比分别为1.65、1.52、0.80。1984年以来,F总体处于上升趋势,SSB处于下降趋势。基本模型条件下(h=0.8),当前资源状况为"趋向于过度捕捞"(Overfishing),且已接近于"过度捕捞"(Overfished)。若h=0.7、h=0.9,当前资源状况分别为"捕捞过度"、"趋向于过度捕捞"。
译  名：
Stock assessment of albacore Thunnus alalungain the Indian Ocean
作  者：
ZHU Jiang-feng;DAI Xiao-jie;GUAN Wen-jiang;Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources,Ministry of Education;National Distant-Water Fisheries Engineering Research Center;Scientific Observing and Experimental Station of Oceanic Fishery Resources,Ministry of Agriculture;College of Marine Sciences,Shanghai Ocean University;
关键词：
Thunnus alalunga;;Stock assessment;;Management;;Indian Ocean
摘  要：
Albacore Thunnus alalungais one of the main tuna species in the Indian Ocean(IO).The stock status of IO albacore was uncertain due to the lack of reliable data.We assessed the albacore based on the most recent available fishery data and biological information using an age-structured assessment program(ASAP).The estimated fishing mortality(F), spawning stock biomass(SSB)and biological reference points were sensitive to the assumed steepness(h)in stock-recruitment relationship.At the assumption of h=0.7,0.8(base-case) and 0.9,the maximum sustainable yield(MSY)was 25 268t,27 414tand 51 924t;the ratio of current(year 2010)Fto FMSYwas 2.85,2.32and 1.11;and the ratio of current catch to MSY was 1.65,1.52and 0.80,respectively.The Fvalue has been increasing and SSB value has been decreasing since 1984.At the base-case(h=0.8),the current stock status was"over-fishing"and approaching to"overfished".At the sensitivity analyses of h=0.7and 0.9,the current stock status was"overfished"and"overfishing",respectively.

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