海洋科学2012，Vol.36Issue(3)：61-66,6.
池养乌苏里拟鳞雌雄鱼生长及周年性激素与性腺发育研究
Growth and seasonal changes of sex steroids level and gonad development in female and male Pseudobagrus ussuriensis
摘要
Abstract
The protection of germplasm resources and aquaculture of Pseudobagrus ussuriensis are receiving more and more attention in China. The growth and seasonal changes of sex steroids level and gonad development in fe- male and male P ussuriensis were analyzed. The results showed that the differences in weight and length of female and male P, ussuriensis were increased with growth of age. The relationship formula of weight and length for fe- male and male fishes were W=0.182 5L1.9646（R2=0.944 5） and W=0.188 1L2.0059（R2=0.961 8）, respectively. Our result showed that the relative fatness was kept going down from December （2-year old fish） to the next October （3-year old fish）. The gonad maturity, 17β-estradiol （E2） level and testosterone （T） were all firstly increased and then de- creased, and the E2 and T values in female P.ussuriensis were both reached the peak values in May, which were （1624.23±331.4） pg/mL and （1320.85±279.12） pg/mL respectively. The male＇s E2 level also reached the highest level （323.17±147.36） pg/mL in May, and the T value was increased to the highest level （758.33±100.47） pg/mL in April. The gonadal development was synchronized with gonad maturity in both male and female fishes. The gonad was developed at the third phase in December and at the fifth phase in June.关键词
乌苏里拟鳞（Pseudobagrus/ussuriensis）/生长/成熟度/性激素/性腺Key words
Pseudobagrus ussuriensis/growth/gonad maturity/sex steroids/gonad分类
生物科学引用本文复制引用
贾一何,黄鹤忠,李倩倩,张群英..池养乌苏里拟鳞雌雄鱼生长及周年性激素与性腺发育研究[J].海洋科学,2012,36(3):61-66,6.基金项目
江苏省科技厅科技支撑项目 （）
苏州市科技局科技支撑项目 （）
