摘要
用鳞片并对照耳石,鉴定广东大亚湾中华青鳞鱼年龄。提出体重、体长和鳞长关系。用重量法计算220尾雌鱼的怀卵量,分析性成熟系数月变化和卵径分布。
Altogether 1257 specimens collected from April to December in 1987 were studied in this paper by examining the scales for age determination The following two formulas were.used to compute the length-weight relationship of this fish:where L and W represent standard body length and weight respectively.The formula L=51.5096+0.7275R was used to calculate the relationship between body length and scales length.The growth equation is:where Lt is the standard length in mm at the age of t,and Wt is the body weight ( excluding gut gonads) in grams at the age of t215 specimens of gonads of female Harengula nymphaea were studied.
关键词
中华青鳞鱼
年龄
生长
生殖习性
Harengula nymphaea
age
growth
reproductive behavior
