摘要
本文侧重研究了站鱼个体生殖力及产卵类型。结果表明：雌性个体1冬龄达性成熟，性腺一次成熟，卵子分批产出，产卵期是6—8月份，性成熟系数在7月份达高峰，8月份是产卵盛期，在产卵前的卵巢切片只发现有第4时相和第5时相卵母细胞，确定产卵类型为一次产卵。
This paper studies the individual fecundity as well as its spawing type. The results are sumarized as follows: Females attain sexual maturty at 1-year-old. Sexual glang attain maturity in the meantime and spaw partly. Breeding season lasts from June to August. The sexual maturation coefficient of ovarian Obtain only one peak in July before spawing, at the same time, stages of 4th and 5th eggs can be found in the ovarians. This paper also disscuss the fishery utilizition on catfish stock resoures.
出处
《内蒙古民族大学学报》
1998年第3期9-15,共7页
Journal of Inner Mongolia University for the Nationalities
基金
内蒙古自然科学基金!9610E45
关键词
鲇鱼
产卵类型
种群资源
Catfish(Silurus asotus)
Spawing type
Stock resoures
