한국산개구리(Rana coreana) 정소주기에 관한 연구
A Study on the Testicular Cycle of Korean Brown Frog (Rana coreana)
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초록
In order to determine the testicular cycle of the Korean brown frog, Rana coreana, thegonadosomatic index (GSI) and the changes of germ cells in testis for adult males were investigatedthroughout the year. The study indicated that the spermatogenesis in the seminiferous tubule oftestis began in August and became most active in the month of September, and the GSI was recordedthe highest and the cross area of seminiferous tubule was the widest on this period. Furthermorethe seminiferous tubules at the post spawning stage appeared in testis during February, andthe spermatogenesis was quiescence period of time from March to July and the GSI and the crossarea of seminiferous tubule were found to be the lowest. Based on these observations, we suggestthat, GSI of male Korean brown frog changes significantly between July to August, indicating thetesticular cycle with discontinuous spermatogenic process, and the breeding season was confirmedto be February.
Abstract
In order to determine the testicular cycle of the Korean brown frog, Rana coreana, thegonadosomatic index (GSI) and the changes of germ cells in testis for adult males were investigatedthroughout the year. The study indicated that the spermatogenesis in the seminiferous tubule oftestis began in August and became most active in the month of September, and the GSI was recordedthe highest and the cross area of seminiferous tubule was the widest on this period. Furthermorethe seminiferous tubules at the post spawning stage appeared in testis during February, andthe spermatogenesis was quiescence period of time from March to July and the GSI and the crossarea of seminiferous tubule were found to be the lowest. Based on these observations, we suggestthat, GSI of male Korean brown frog changes significantly between July to August, indicating thetesticular cycle with discontinuous spermatogenic process, and the breeding season was confirmedto be February.
참고문헌 (15)
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