Boissin-Agasse L, Richard P, Boissin J
C R Acad Sci III. 1985;300(18):685-90.
Five male ferrets, aged 2 months, were kept in constant light (4-5 lx) and temperature (15 +/- 1 degree C) from July 1979 to September 1983. Under these experimental conditions, the testicular size displayed spontaneous variations. Four cycles, characterized by a marked testicular enlargement followed by an equivalent decrease, were observed in three ferrets. The two others exhibited only three spontaneous cycles. The mean interval between two successive maximums equalled 340 +/- 28 days.
1979年7月至1983年9月期间，将5只2月龄的雄性雪貂置于持续光照（4 - 5勒克斯）和温度（15±1摄氏度）的环境中。在这些实验条件下，睾丸大小出现自发变化。在3只雪貂中观察到4个周期，其特征是睾丸明显增大，随后等量减小。另外2只仅表现出3个自发周期。两个连续最大值之间的平均间隔为340±28天。
