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2008年4~5月对洛河洛阳桥段野生鲹鲦进行随机取样,共145尾(其中雌鱼44尾、雄鱼101尾),测定其体长、全长、体重等指标,采集鳞片测定其年龄,对该水体中鲹鲦的生长进行初步研究,结果如下:(1)体长与体重关系式:W=0.0195L2.8806(R2=0.8875,n=145),(2)雌鱼体长与体重关系式:W=0.0197L2.8918(R2=0.9351,n=44),雄鱼体长与体重关系式:W=0.0285L2.7133(R2=0.8414,n=101)。通过分析其生长情况,并综合考虑,建议鲹鲦最小起捕年龄为1+龄。
From April to May in 2008, 145 specimens (including 44 females and 101 males) were sampled randomly from Luoyangqiao section of Luohe. The body length, full length and body weight were measured, and the scales were collected The results showed as follows: (1) Body length and body weight: W = 0.0195L2.8806 (R2 = 0.8875, n = 145), (2) The relationship between body length and body length was as follows: W = 0.0197L2.8918 (R2 = 0.9351, n = 44). By analyzing its growth and considering it, it is suggested that the minimum catching age of catfish is 1+ years old.