【摘要】 对黄鳝精巢显微和超微结构的观察结果表明 ,其精原细胞可分两种类型 :初级精原细胞和次级精原细胞 ;精子鞭毛轴丝由外周 9组微管和两根中央微管构成 ;间质细胞分布有广泛的滑面内质网和具小管的线粒体。据对10 6尾 (体重为 17～ 32 0 g)黄鳝精巢切片观察 ,黄鳝由雌性完全转变为雄性后 ,精巢已接近发育成熟 ;经 χ2 检验表明 ,其性腺成熟度与体重关系不大 (P >0 0 5 )。性成熟后 ,精巢所处发育阶段 (Ⅰ -Ⅵ期 )主要随不同季节而变化更多还原

【Abstract】 In this paper, microstructure and ultrastructure of testis in Monopterus has been investigated by using light microscope, scanning electron microscope transmissional electron microscope. It is found that the spermatogonia of the Monopterus are divided into two kinds of type: primary spermatonium and secondary spermatonium. In the shaft of the spermatozoal flagellum, nine microtubular doublets are forming a ring around a central pair of microtubules. Electron micrograph shows extensive agranular endoplasmic reticulum and numerous dense mitochondria with tubular cristae in the interstitial cells of Monopterus. These observations indicate that the intestitial cells pass some strctrual characteristics of mammalian Leydig cells. According to the microscopic examination of the testis section from 106 fish (their body weight were 17～320 grams), it is found that after sex reversal from female to male in Monopterus, their testis has already reached or approached sexual maturity. It is proved by Chi square test that there is no direct relationship between the maturity degree of testicular development and body weight of Monopterus. After sexual mature, testis of Monopterus varies obviously with seasonal cycle.更多还原