大雁生殖系统的解剖学和组织学研究

Anatomic and Histological Study of the Reproductive System of Wild Geese

实验对生殖季节与非生殖季节的大雁生殖系统进行了组织学研究。大雁雌性生殖系统左侧发育,右侧退化。生殖系统由卵巢、输卵管、交际器组成。输卵管包括漏斗部、蛋白分泌部、峡部、子宫与阴道五个部分。卵巢表面无浆膜覆盖,覆以单层生殖上皮,由浅部的皮质和深部髓质组成,皮质内含各级卵泡。雄性生殖系统由精巢、输精管、睾丸旁导管系统和交接器组成。精巢的基本结构单位为曲精细管,外层包被着浆膜,其下是白膜,白膜结缔组织伸入精巢实质部,呈网状分布,繁殖季节的睾丸实质内充满曲细精管。

The reproductive system of wild geese in the reproductive and non-reproductive seasons was studied histologically. Results showed that the left part of the reproductive system developed normally, while the right part was degenerate. The female reproductive system was composed of ovary, oviduct and so on; the tuba uterine differentiated into 5 parts： infundibulum, albumen, isthmus, uteri and vagina. The ovary was composed of cortex and medulla, covered with one layer of epithelial cells, but without serous membrane on the surface. The male reproductive system divided into testis, vas deferens, accessory sex gland and penis; the constructive unit of testis was seminalis tubule surrounded by a layer of chorion, with thin and dense connective tissue underneath, protruding into the center of the testis. In reproductive season, the testis was filled with seminiferous tubule and interstitial tissue.