论文部分内容阅读
本文根据 1999年~2003年 7月、8月在东海南部进行的 4次鲐鱼围网调查资料, 对东海南部海域的鲐鱼生物学特性进行研究。鲐鱼最小叉长为 15.4cm, 最大为 28.8cm, 平均叉长 22.1cm; 优势叉长组为 19~25cm, 其出现频率为 80%。2002年、2003年鲐鱼叉长组成个体比 1999年、2001年大; 鲐鱼叉长与体重的关系进行拟合后的关系式为: W = 0.0034L3. 3401 ; 鲐鱼胃饱满度以 0级为主, 占 70%; 年龄组成以当龄鱼为主。
Based on the survey data of four bream fish in the southern part of the East China Sea from July 1999 to August 2003, the biological characteristics of bream fish in the southern part of the East China Sea were studied. The minimum length of the anchovy fork is 15.4cm, the maximum is 28.8cm, the average length of the fork is 22.1cm. The length of the dominant fork is 19 ~ 25cm, and the appearance frequency is 80%. In 2002 and 2003, the length of the harpoon was longer than that in 1999 and 2001. The relationship between the length of the harpoon and body weight was fitted as follows: W = 0.0034L3. 3401; , Accounting for 70% of the age group consisting mainly of fish.