Rowsemitt C N, Berger P J
Gen Comp Endocrinol. 1983 Jun;50(3):354-8. doi: 10.1016/0016-6480(83)90255-1.
Diel plasma testosterone rhythms were examined in adult male Microtus montanus, a seasonal breeder which displays nocturnal locomotor activity under long photoperiod and diurnal activity under short photoperiod. Under 16 hr light:8 hr dark (16L:8D), plasma testosterone levels peak during the light at 11.8 ng/ml. Under 8L:16D, plasma testosterone peaks during the dark at 5 ng/ml.
对成年雄性蒙塔努斯田鼠的昼夜血浆睾酮节律进行了研究，该物种是季节性繁殖动物，在长光照周期下表现出夜间活动，在短光照周期下表现出白天活动。在16小时光照：8小时黑暗（16L:8D）条件下，血浆睾酮水平在光照期间达到峰值，为11.8纳克/毫升。在8L:16D条件下，血浆睾酮在黑暗期间达到峰值，为5纳克/毫升。
