知识与财富的链接
根据2008-2011年中国鱿钓船在阿根廷专属经济区内的生产统计和表层水温(SST)的资料,对渔获量组成和渔场分布情况进行了分析,同时利用Marine Explorer软件和K-S统计方法对渔场分布与SST的关系进行了研究,推测出各月中心渔场的最适SST。结果表明:阿根廷专属经济区内鱿鱼产量在2-4月份较高,且波动较大;产量主要集中在44°～52°S、60°～65°W海域,约占总产量的70%以上,各月产量的空间分布有较大差异,作业渔场总体上不断北移。2-8月中心渔场各月适宜SST范围分别为11～14.5℃、9.5～12℃、9～10℃、9～9.5℃、7～9℃、7.5～9℃、7～10℃,并通过了K-S检验。研究建议,今后应收集更为详细的包括生物学在内的生产统计数据,结合不同产卵群体的特点,对资源变动和渔场变化进行系统和科学分析,为合理利用西南大西洋阿根廷滑柔鱼资源提供基础。
Based on the production data from Chinese squid jigging vessels in the waters of Exclusive Economic Zones of Argentina during 2008 to 2011 and sea surface temperature (SST), the catch composition and distribution of fishing ground are analyzed. The relationship between fishing ground and SST is analyzed and the monthly optimum SSTs of fishing ground are deduced by use of the software Marine Explorer and the Kolmogorov–Smirnov test. The result showed that the production is relatively high but with fluctuation during February to April. The catch is mainly concentrated in the waters near 44?-52?S and 60?-65?W, accounting for 70% of the total production. There is a significant difference in the monthly distribution of fishing ground, and the fishing ground moves westwards during February to August. The monthly optimum SSTs of fishing ground are 11-14.5℃, 9.5-12℃, 9-10℃, 9-9.5℃, 7-13℃, 7.5-9℃ and 7-10℃, respectively. The result of Kolmogorov–Smirnov test demonstrated no significant difference between SST and CPUE. It is suggested that the catch data including biological data is collected in details, and the annual changes of resources and fishing ground for I. argentinus is needed to be carried out in combination with different spawning populations, to make a basis on sustainable exploiting fishery resources in Southwest Atlantic Ocean.
