印度洋东部黄鳍金枪鱼的渔业生物学

The fishery biology of Thunnus albacares in the East of Indian Ocean

根据在印度洋东部海域的延绳钓生产实践 ,对所渔获的黄鳍金枪鱼 (Thunnus albacares)群体的构成、繁殖等基本生物学特征进行了初步探讨。结果显示 ,渔获黄鳍金枪鱼纯重范围为 10～75 kg,叉长范围为 80～ 15 0 cm,纯重、叉长关系为 W=1.5 2 7× 10 -5L3,渔获构成月间变化明显 。

Based on the production practice in the East of Indian Ocean,the basic biological characteristics of yield composition and breading etc.of Thunnus albacares captured were investigated.The results indicated that the body weight and fork length of Thunnus albacares varied between 10~75 kg in weight?80~150 cm in length respectively, and had the relationship curve W=1 527×10 -5 L 3 between them, the monthly yield composition varied remarkably. The maturity and reproduction rhythm of individuals at different ages varied also markedly .