摘要
性成熟的江豚精巢明显增大，其重量约为成熟前的14倍，结合有关江豚捕捞和野外生态学资料，初步认为长江江豚属多雌性群体，而成熟的雄性个体具有较大的精巢，可能对保证群体的成功繁殖非常重要。根据精巢的组织学特征，可将江豚精巢发育分为胚胎早期、胚胎晚期、成熟前期和成熟期（包括活动期和不活动期），通过对精巢生精小管管径大小和白膜厚度进行分析，认为成熟江豚精巢活动呈季节性变化。
The volume of matUre teshs of black flnless porpoise in the Yangtze Riverwas large. Its weight was almost 14 hmes that of prematUre individual. Consideringsome records of captUre and ecological inveshgahon of black finless porpoise, itSreproduction population reproduchon was Perhaps polygyny in the Yangtze River. Soit is estimated that large testis of mature male was favorable to succesive reproductionof populahon. The histological development process of teshs was divided into earlystage of embryo, late stage of embryo, prematUre stage and matUre stage (achve andinachve testis) in the paPer. Seasonal changes of matUre teshs of black finlessPorpoise was proved by the study of seminiferous tubule and tunica albuginea.
出处
《水生生物学报》
CAS
CSCD
北大核心
1998年第4期341-345,共5页
Acta Hydrobiologica Sinica
基金
国家自然科学基金
关键词
精巢
发育
组织学
江豚
Testis, Development Histology, Neophocaena phocaenoides
