鳗鲡繁殖生物学研究 Ⅲ.鳗鲡性腺发育组织学和细胞学研究

鳗鲡精巢发育可划分为6个时期,即精原细胞前增殖期,精原细胞后增殖期,精母细胞生长、成熟期,精子开始出现期,精子完全成熟期和精子退化吸收期。卵细胞的发育可划分为6个时相,即卵原细胞时相,卵母细胞单层滤泡时相,卵母细胞出现脂肪泡时相,卵母细胞卵黄充满时相,卵母细胞核极化时相和卵母细胞退化时相。以卵细胞发育6个时相在卵巢中组成的差异,也可把卵巢划分为相应的6个时期。对鳗鲡性腺发育的分期,卵黄积累方式,产卵类型等问题进行了讨论。  

STUDIES ON THE BREEDING BIOLOGY OF THE EEL (ANGUILLA JAPONICA TEMMINCK SCHLEGEL)3. HISTOLOGICAL AND CYTOLOGICAL STUDIES ON THE GONADAL DEVELOPMENT OF EEL

The gonadal development of eel was studied histologically and cytologically. The development of testis is composed of six stages: 1) early multiplication of spermatogonia; 2) late multiplication of spermatogonia; 3) growth and maturation of spermatocytes; 4) initial appearance of spermatozoa; 5) complete maturation of spermatozoa; 6) degeneration of spermatozoa. The oogenesis is composed of ix phases: 1) oogonia; 2) oocyte with follicular epithelium consisting of a single layer of follicle cells; 3) oocyte with adipose vesicles; 4) oocyte filled with yolk; 5) oocyte with migratory nucleus; 6) degeneration of oocyte. Based on the six phases of oogenesis, the development of ovary is also composed of six stages correspondingly. The staging of gonadal development of eel, the mode of yolk formation, the spawning type and other questions were discussed.