Seasonal Changes in Plasma Testosterone and 5α-Dihydrotestosterone Levels in the Adult Male Newt, <I>Cynops Pyrrhogaster Pyrrhogaster</I>
スポンサーリンク
概要
- 論文の詳細を見る
Seasonal changes in plasma levels of testosterone (T) and 5α-dihydrotestosterone (DTH) were examined in the adult male Japanese red-bellied newt. The concentration of plasma T increased significantly (p<0.05) from January to February and decreased drastically from April to July when it reached its minimum. After the summer decline, plasma T increase rapidly from July to October (p<0.05) and reached its maximum in October. Concerning the seasonal fluctuation of plasma DHT levels, three peaks were observed; one, the highest peak, appeared in the middle of May, and two lower peaks in early spring (Feb.-March) and autumn (Sept.-Oct.). In this report, the role of plasma T and DHT in the reproductive cycle is discussed.
- 社団法人 日本内分泌学会の論文
著者
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Tanaka Shigeyasu
Department Of Biology Faculty Of Science Shizuoka University
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Takikawa Hiroo
Department Of Pharmaceutical Chemistry Insitute Of Endocrinology Gunma University
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