中国水蛇Enhydris Chinensis(Gray)生殖周期肾性节形态结构和组织化学的研究

雄性中国水蛇的肾性节是由单层柱状上皮组成,充满分泌颗粒。它的出现相应于睾丸性激素的次高峰期和高峰期。它的组织化学反应是:糖原的PAS反应呈强阳性,并含有酸性粘多糖、脂类、磷脂、胆固醇、碱性磷酸酶等,而酸性磷酸酶和葡萄糖-6-磷酸酶则呈阴性反应。酸性磷酸酶与过去所报导的陆生及沼泽地区的蛇类的含量不同或相反。

Histology and Histochemistry of the Renal Sexual Segement in Snake,Enhydris chinensis (Gray) During the Reproductive Cycle

This segment is hupertrophies region of the kidney tubules in late sprins, autumn, and early winter, coinciding with the peak and secondary peak in testicular sex hormonal level. That consists of a single layer of column epithelium and gills with secretions when hypertrophic. Histochemical reactions of glycogne are strong positive and contain acid mucosubstances, lipids, phospholipids, cholersterol and alkaline phosphatase, That the basal surface of the epithelial cells exhibits a high activity of alkaline phosphatase, They are negative or very weak in acid phospgatase and glucose-6-phosphatase. The contents of acid phosphatase are contrast or different to the past studies that had been investigated in terrestrial and marshy snakes.It is suggested that possiblely the secretions of renal sexual segments and testes are mixed with sperm and are utilized by the spermatozoa to substain their longer life in the oviduct.