de Bruijn M, Broekman M, van der Schoot P
Department of Endocrinology, Growth and Reproduction Faculty of Medicine, Erasmus University, Rotterdam, The Netherlands.
Physiol Behav. 1988;43(1):35-9. doi: 10.1016/0031-9384(88)90095-9.
Estrous female rats display 'precopulatory behaviors' such as ear wiggling and hopping/darting when castrated males treated with testosterone propionate (TP) are placed in their vicinity and before copulatory interactions have taken place. Castrated males treated with estradiol benzoate (EB) do not elicit these precopulatory behaviors in advance of copulatory interactions. It therefore seemed of interest to study females' sexual behavior with castrated males treated with TP or EB when males or females had primary control over the temporal patterning of the behavior. Unrestrained sexual behavior (= male control) with EB-treated males was characterized by large numbers of intromissions and long periods of time preceding ejaculation, as compared with interactions with TP-treated males. The temporal pattern of sexual behavior did not change importantly when the males were tethered (= sexual behavior controlled by females). When given a choice between two sexually active castrated and tethered males, one treated with TP and the other with EB, estrous females 'preferred' EB-treated animals in various respects. Fewer interactions occurred with, and less time was spent in the vicinity of, TP-treated males over prolonged observation periods (115-135 min). The preference for EB-treated males disappeared, and TP- and EB-treated animals became equally attractive, when the vaginal opening of the female animals was covered with adhesive tape to prevent the occurrence of penile intromissions during mounting. It is concluded that female control over copulatory behavior does not necessarily change the females' sexual behavior.(ABSTRACT TRUNCATED AT 250 WORDS)
当用丙酸睾酮（TP）处理的去势雄鼠被放置在发情期雌鼠附近且在交配互动发生之前，发情期雌鼠会表现出“交配前行为”，如耳朵摆动和跳跃/飞奔。用苯甲酸雌二醇（EB）处理的去势雄鼠在交配互动之前不会引发这些交配前行为。因此，研究当雄性或雌性对行为的时间模式具有主要控制权时，用TP或EB处理的去势雄鼠与雌鼠的性行为似乎很有意义。与与TP处理的雄鼠的互动相比，与EB处理的雄鼠的无限制性行为（=雄性控制）的特征是大量插入和射精前的长时间。当雄鼠被拴住时（=性行为由雌性控制），性行为的时间模式没有重要变化。当在两只性活跃的去势且被拴住的雄鼠之间进行选择时，一只用TP处理，另一只用EB处理，发情期雌鼠在各个方面 “更喜欢” 用EB处理的动物。在延长的观察期（115 - 135分钟）内，与TP处理的雄鼠的互动较少，在其附近停留的时间也较少。当用胶带覆盖雌性动物的阴道口以防止在交配时发生阴茎插入时，对EB处理的雄鼠的偏好消失，TP处理和EB处理的动物变得同样有吸引力。结论是，雌性对交配行为的控制不一定会改变雌性的性行为。（摘要截短至250字）
