Hart B L
Physiol Behav. 1983 Dec;31(6):823-7. doi: 10.1016/0031-9384(83)90279-2.
A number of experiments have documented that when male rats are exposed to female rats they undergo a marked increase in the secretion of luteinizing hormone and testosterone. This response can be conditioned to other, previously neutral, stimuli associated with mating. Recent work has highlighted the remarkable sensitivity of penile reflexes to fluctuations in blood concentration of testosterone. Other work has pointed to the function of penile reflexes in seminal plug removal and deposition. It is hypothesized that penile reflexes are potentiated by the increase in testosterone that occurs in response to sexually relevant cues and that the potentiated reflexes play a role in sperm competition during multi-male mating encounters. The sperm competition centers around a male rat's ability to dislodge seminal plugs left in the vagina by other males and to deposit his own plug as tightly as possible to resist dislodgement by another.
多项实验证明，当雄性大鼠接触雌性大鼠时，它们促黄体生成素和睾酮的分泌会显著增加。这种反应可以与其他先前中性的、与交配相关的刺激建立条件反射。最近的研究突出了阴茎反射对血液中睾酮浓度波动的显著敏感性。其他研究指出了阴茎反射在去除和沉积精液栓方面的作用。据推测，阴茎反射会因对性相关线索做出反应而增加的睾酮而增强，并且增强后的反射在多雄交配过程中的精子竞争中发挥作用。精子竞争围绕着雄性大鼠将其他雄性留在阴道内的精液栓排出以及尽可能紧密地沉积自己的精液栓以抵抗被其他雄性排出的能力展开。
