Reproductive cycle of male Chinese green tree vipers, Trimeresurus s. stejnegeri, in northern Taiwan

T. S. Tsai, M. C. Tu*

*此作品的通信作者

研究成果: 雜誌貢獻期刊論文同行評審

12 引文 斯高帕斯(Scopus)

摘要

We studied the reproductive cycle of male Chinese green tree vipers, Trimeresurus s. stejnegeri, in northern Taiwan by examining seasonal changes in the morphology and histology of their reproductive organs from May 1996 to August 1997. A total of 144 mature males was examined. Based on a histological examination of the seminiferous epithelium, we classified spermatogenesis into five stages: early recrudescence, late recrudescence, spermiogenesis, early regression, and late regression. Testis recrudescence began in the spring. Sperm started to appear in summer and roached a peak in fall. In the winter, testes of most snakes were regressed and sperm disappeared in the lumina of the seminiferous tubules. Throughout the year, sperm were present in the vas deferens. Testis mass peaked in summer, then regressed in winter and early spring. Monthly changes in seminiferous tubule diameter, seminiferous epithelium height, and fat body mass revealed a similar pattern as that of testis. These three parameters were significantly correlated with each other and with temperature and rainfall. Monthly changes in testis and fat body mass were followed by changes in kidney mass. Hypertrophy of the renal sexual segment of T. s. stejnegeri occurred from late summer to winter and might be related to mating activities observed in the sine period. As with other viperids, male Chinese green tree vipers exhibited a postnuptial spermatogenesis cycle, which may be confusing when judging from mating activities alone. We proposed another criterion to distinguish postnuptial from prenuptial spermatogenesis.

原文英語
頁(從 - 到)424-430
頁數7
期刊Journal of Herpetology
34
發行號3
DOIs
出版狀態已發佈 - 2000

ASJC Scopus subject areas

  • 生態學、進化論、行為學與系統學
  • 動物科學與動物學

指紋

深入研究「Reproductive cycle of male Chinese green tree vipers, Trimeresurus s. stejnegeri, in northern Taiwan」主題。共同形成了獨特的指紋。

引用此