Racey P A
J Reprod Fertil. 1978 Mar;52(2):195-200. doi: 10.1530/jrf.0.0520195.
Seasonal changes in testicular and plasma testosterone levels and in androgen-dependent organs were determined in moles breeding at 53 degrees N. Although the testes contain up to 30 times more testosterone during spermatogenesis than during sexual quiescence, appreciable quantities of this hormone are present during late summer and early autumn. Annual spermatogenesis lasts for only 2 months, but in some moles spermatozoa remain in the epididymis for up to 3 months after the testes have begun to involute, and may therefore be available to inseminate females coming into a second oestrus.
在北纬53度繁殖的鼹鼠中，测定了睾丸和血浆睾酮水平以及雄激素依赖器官的季节性变化。尽管睾丸在精子发生过程中所含的睾酮比性静止期多30倍，但在夏末和初秋期间仍存在相当数量的这种激素。每年的精子发生仅持续2个月，但在一些鼹鼠中，精子在睾丸开始退化后可在附睾中保留长达3个月，因此可能用于使进入第二个发情期的雌性受孕。
