论文部分内容阅读
报道中国水产总公司金枪鱼船队 1997年 5月至 1999年 5月期间在印度洋东部海域进行延绳钓作业的有关情况。结果显示 :船均月产量 ,以尾数计在 4 9～ 175尾之间波动 ,最高出现于1998年 9月 ,最低出现于 1997年 5月 ,平均 116尾 /船·月 ;以重量 (纯重 )计在 1559～ 630 6kg之间波动 ,最高出现于 1999年 2月 ,最低出现于 1997年 5月 ,平均达 4 0 64kg/船·月。月均上钓率在0 .4 7%～ 2 .2 8%之间波动 ,平均 1.0 2 % ,船间及月间差异显著。船月均下钓 52 0 8～ 15558个。
Reported on the situation of longline fishing operations conducted by China Fishery Corporation tuna fleet in the eastern Indian Ocean from May 1997 to May 1999. The results showed that the monthly yield of the ship fluctuated between 49 and 175 in terms of mantissa, the highest appeared in September 1998 and the lowest occurred in May 1997 with an average of 116 fish per month, ) Fluctuated between 1559 ~ 630 6kg, the highest appeared in February 1999, the lowest appeared in May 1997 with an average of 4 0 64kg / boat · month. The monthly mean catch rate fluctuated between 0.4% and 2.2%, with an average of 1.02%. There was significant difference between ship and month. The average monthly fishing boat 52 0 8 ~ 15 558.