摘要
以印度洋黄鳍金枪鱼渔业为例,应用Grainger和Garcia提出的年渔获量相对增长率(RRCI)的概念,估算其最大可持续产量(MSY)近似值,并与利用其它方法估算的结果进行比较。研究结果表明,当RRCI=0时,印度洋黄鳍金枪鱼渔业MSY近似值为33.75 t,比Pella-Tomlinson模型的预测结果低3%。用本文方法只需计算年渔获量相对增长率,即可获得MSY的近似值,因此本方法可作为对常规评估模型方法的有益补充。
Estimation of the maximum sustainable yield （MSY） is very important in fish stock assessment and management, but the MSY can not often be estimated from the incomplete catch data of commercial fisheries. The MSY was calculated on the data of yellowfin tuna （Thunnus albacares） fishery in the Indian Ocean by the yearly relative rate of catch increment （RRCI） proposed by Grainger and Garcia and compared with the results obtained from the other methods. The MSY for yellowfin tuna fishery was found to be 33.75 × 10^4 t when yearly RRCI equals zero, 3% lower than the MSY estimated through Pella and Tomlinson model. Our results supported the fact that a rough MSY can be obtained by this method as a useful supplementary tool to conventional stock assessment models by calculating RRCI.
出处
《大连水产学院学报》
CAS
CSCD
北大核心
2009年第2期141-145,共5页
Journal of Dalian Fisheries University
基金
国家科技支撑计划项目(2006BAD09A05)
国家"863"计划项目(2007AA092202)
上海市捕捞学重点学科项目(S30702)
关键词
资源评估
渔获量年相对增长率
最大可持续产量
黄鳍金枪鱼
印度洋
stock assessment
relative rate of catch increment
maximum sustainable yield
yellowfin tuna
the Indian Ocean
