지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
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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.
목차
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참고문헌 (15)
참고문헌 신청
Bentley PJ. / 1982 / Comparative Vertebrate Endocrinology / Cambridge University Press : 338 ~ 365
Delgado MJ / 1989 / Seasonal cycles in testicular activity in the frog / Rana perezi. Gen. Comp. Endocrinol 73 : 1 ~ 11
Iwasawa H / 1959 / Histological observations on the seasonal change of the testis and the thumb pad in the frog, Rana nigromaculata / J. Fac. Sci., Nigata Univ., Ser. II 2 :
Kera Y / 1981 / Functional histology of the testis in the process of sexual maturation in the frog. Rana nigromaculata / Zool. Mag 90 : 6 ~ 14
Kim HS / 1998 / Distribution, food habit and seasonal cycles of Germ cell activity in the introduced Bullfrog, Rana catesbeiana in Korea / FRI J. For. Sci 57 : 165 ~ 177
Delgado MJ / 1989 / Seasonal cycles in testicular activity in the frog / Rana perezi. Gen. Comp. Endocrinol 73 : 1 ~ 11
Iwasawa H / 1959 / Histological observations on the seasonal change of the testis and the thumb pad in the frog, Rana nigromaculata / J. Fac. Sci., Nigata Univ., Ser. II 2 :
Kera Y / 1981 / Functional histology of the testis in the process of sexual maturation in the frog. Rana nigromaculata / Zool. Mag 90 : 6 ~ 14
Kim HS / 1998 / Distribution, food habit and seasonal cycles of Germ cell activity in the introduced Bullfrog, Rana catesbeiana in Korea / FRI J. For. Sci 57 : 165 ~ 177
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