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根据 2 0 0 4年 7月 2 8日至 9月 1日在中西太平洋海域的金枪鱼围网生产调查结果 ,以及“金汇 2号”2 0 0 3年全年的生产数据 ,对中西太平洋金枪鱼围网渔获物组成进行了初步分析。结果显示 ,渔获物种类有鲣鱼 (Katsuwonuspelamis)、黄鳍金枪鱼 (Thunnusalbacares)和大眼金枪鱼 (Thunnusobesus)等 19种 ;渔获物重量组成中鲣鱼占 70 .5 1% ,黄鳍金枪鱼占 2 6 .92 % ,其它鱼类占 2 .5 6 % ;鲣鱼的叉长范围为 2 7～ 81cm ,优势叉长组为 4 0～ 5 0cm ,占 4 1% ;黄鳍金枪鱼叉长范围为 32～ 16 5cm ,优势叉长组为 5 0～ 70cm ,占 33% ,另一优势叉长组为 110～ 130cm ,占 2 0 % ;渔获物重量组成存在海域差异 ,在 16 2°E以东海域鲣鱼比例高于以西海域 ,黄鳍金枪鱼则是在 16 2°E以西海域的比例较高。
According to the survey results of tuna purse seine production in the Western and Central Pacific Ocean from July 28 to September 1, 2004, and the annual production data of “Jinhui 2” in 2003, The composition of seine catches was analyzed initially. The results showed that there were 19 species of catches including Katsuwonus pelamis, Thunnusal bacares and Thunnus obesus; the weight of catches accounted for 70.51% of the catfish, the percentage of yellowfin tuna 2 6 .92%, other fish accounted for 2.56%. The length of the forkfish ranged from 27 to 81cm, and the dominant fork length ranged from 40 to 51cm, accounting for 41%. The length of the yellowfin tuna fork range Was 32 ~ 16 5cm. The dominant long-legged fork was 50 ~ 70cm, accounting for 33%. The other dominant long-legged fork was 110 ~ 130cm, accounting for 20% of the total length. The weight composition of the catch varied from sea area to seawater at 16 2 ° E The proportion of anchovy in the east coast was higher than that in the west of the region, but the percentage of yellowfin tuna was higher in the west of 162 ° E.