Nyby J, Dizinno G, Whitney G
J Comp Physiol Psychol. 1977 Dec;91(6):1424-31. doi: 10.1037/h0077411.
Male mice (Mus musculus), during courtship and sexual behavior, vocalize substantially more 70-kHz ultrasounds than do females. Four experiments demonstrated that testosterone propionate (TP) substantially increased ultrasonic emissions and mounting by ovariectomized females and the long-term gonadectomized males and females increased their amount of ultrasound production in response to TP to approximately the same levels. From these results it is suggested that the sexual dimorphism normally seen in ultrasonic vocalizations can be accounted for by the activational effects of androgen in adulthood.
雄性小鼠（小家鼠）在求偶和性行为期间发出的70千赫兹超声波比雌性小鼠多得多。四项实验表明，丙酸睾酮（TP）显著增加了去卵巢雌性小鼠以及长期去势的雄性和雌性小鼠的超声波发射和爬跨行为，并且长期去势的雄性和雌性小鼠对TP的反应使它们的超声波产生量增加到大致相同的水平。从这些结果可以推测，成年期雄激素的激活作用可以解释超声波发声中通常所见的性别差异。
