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.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2012.12
- 수록면
- 845 - 853 (9page)
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초록· 키워드
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To investigate the role of temperatures and photoperiods as environmental cues regulating reproductive rhythm in Pseudobagrus fulvidraco, rearing experiments were conducted using sveral rearing regimes conbined with photoperiods and water temperatures during gonadal degeneration periods. Gonadosomatic index (GSI) in control was 8.16±1.50%, while in other experiment GSI levels in female were lower than that in the control. In case of experimental precinct of 9 light (L) and 15 L, GSI levels were decreased. But GSI level with 20℃ was no diffrence after 40 and 60 days. GSI level in male of control was 0.35±0.05%. GSI under 9 L and 25℃ was similar to that in control, whereas its level in other experiments was lower than that in control. Testosterone (T) of female was 3.68±0.22 ng/mL at experimental precinct. In case of 9 L and 15 L, concentration of T were lower than experimental precinct in all of water temperature. Estradiol-17β (E₂) and 7α, 20β-dihydroxy-4-pregnen-3-one (17α20βOHP) levels of female were 0.42±0.02 and 0.83±0.01 ng/mL at experimental precinct. E₂ levels of 9 and 15 L were higher than experimental precinct and 17α20βOHP levels of 9 and 15 L were higher than experimental precinct. In case of T and 11-ketotestosterone levels were 0.69±0.11 and 0.62±0.03 ng/mL in male. During the period of gonadal degeneration, gonadal maturation did not occur in any of the experimental regimes. However, comparatively high levels of E₂ observed at low temperature regimes (20℃) regardless of photoperiods.
목차
Abstract
Ⅰ. 서론
Ⅱ. 재료 및 방법
Ⅲ. 결과
Ⅳ. 고찰
Ⅴ. 요약 및 결론
참고문헌
참고문헌 (14)
참고문헌 신청
1. [학술지(정기간행물)] - Aida, K. / 1991 / Environmental regulating of reproductive rhythms in teleostei / Bulletin of the Institute of Zoology, Academia Sinica, Monograph 16 : 173 ~ 187
2. [학술지(정기간행물)] - Aida, K. / 1984 / Effect of castration on the smoltification of precocious male masu salmon, Oncorhychus masou / Bulletin of the Japanese Society for the Science of Fish 50 : 565 ~ 571
3. [학술지(정기간행물)] - An. C. M. / 1995 / Effects of photoperiod and water temperature on the reproductive cycle of the spring-spawning bitterling Rhodeus uyekii / Korean Journal of Ichthyology 7 (1) : 43 ~ 55
4. [학술지(정기간행물)] - Asahina, K. / 1983 / Role of temperature and photoperiod in annual reproductive cycle of the rose bitterling Rhodeus ocellatus cellatus / Nippon Suisan Gakkaishi 49 : 61 ~ 67
5. [학술지(정기간행물)] - Asahina, K. / 1980 / Annual reproductive cycle of a bitterling Rhodeus ocellatus ocellatus / Bulletin of the Japanese Society for the Science of Fish 46 : 299 ~ 305
2. [학술지(정기간행물)] - Aida, K. / 1984 / Effect of castration on the smoltification of precocious male masu salmon, Oncorhychus masou / Bulletin of the Japanese Society for the Science of Fish 50 : 565 ~ 571
3. [학술지(정기간행물)] - An. C. M. / 1995 / Effects of photoperiod and water temperature on the reproductive cycle of the spring-spawning bitterling Rhodeus uyekii / Korean Journal of Ichthyology 7 (1) : 43 ~ 55
4. [학술지(정기간행물)] - Asahina, K. / 1983 / Role of temperature and photoperiod in annual reproductive cycle of the rose bitterling Rhodeus ocellatus cellatus / Nippon Suisan Gakkaishi 49 : 61 ~ 67
5. [학술지(정기간행물)] - Asahina, K. / 1980 / Annual reproductive cycle of a bitterling Rhodeus ocellatus ocellatus / Bulletin of the Japanese Society for the Science of Fish 46 : 299 ~ 305
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UCI(KEPA) : I410-ECN-0101-2014-529-000605633