黄颡鱼性腺分化的组织学观察  

Sex Differentiation in Pelteobagrus fulvidraco

作　　者：尹洪滨[1] 贾中贺[1] 姚道霞[1,2,3] 孙中武[2] 于波[2] 孙德志 

机构地区：[1]中国水产科学研究院黑龙江水产研究所,哈尔滨150070 [2]东北林业大学生命科学学院,哈尔滨150040 [3]西北民族大学,兰州730030 [4]黑龙江省肇东市东发渔业有限公司,肇东151121

出　　处：《动物学杂志》2008年第6期103-108,共6页Chinese Journal of Zoology

基　　金：农业部公益性行业科研专项(No.200803055);国家技术基础条件平台建设项目(No.2006DKA30470-005)

摘　　要：运用组织学方法,观察黄颡鱼(Pelteobagrus fulvidraco)性腺分化过程。结果表明,在水温(20±1)℃条件下,卵巢分化时间明显早于精巢。卵巢分化最早发生于孵出后13d左右,其主要标志为原始性腺横切面上出现一个组织突起,进而形成卵巢腔;精巢分化的最早标志为精小叶和输精管的形成,开始于孵出后55d。在发育早期,雌性生殖细胞的活动及分化明显早于雄性生殖细胞。孵出后25d,卵原细胞开始通过有丝分裂快速增殖,孵出后34d左右进入成熟分裂阶段;精原细胞在孵出后55d时才开始大量增殖,成熟分裂最早发生于孵出后64d。Histological methods were used to observe the sex differentiation of Pelteobagrus fulvidraco. It was shown that ovary differentiated before spermary under temperature of （20 ± 1 ）℃. The anatomical indication of ovarian differentiation was the formation of ovarian cavity. Ovary began to form 13 days after hatching. The anatomical indication of spermary differentiation was the formation of spermaduct and seminiferous lobule, and spermary appeared 55 days after hatching. In the early period of development, germ cell division in the female was earlier than that in the male. The mitosis of oogonia appeared 25 days after hatching and the spermatogonia proliferated 55 days after hatching. Besides, the meiosis of oogonia appeared 34 days after hatching while the meiosis of spermatogonia began 64 days after hatching.

关 键 词：黄颡鱼 性腺分化 组织学方法 

分 类 号：S917.4[农业科学—水产科学]