Role of testosterone secretion and penile reflexes in sexual behavior and sperm competition in male rats: A theoretical contribution
Role of testosterone secretion and penile reflexes in sexual behavior and sperm competition in male rats: A theoretical contribution
复制标题
睾酮分泌和阴茎反射在雄性大鼠性行为和精子竞争中的作用：理论贡献
DOI：
10.1016/0031-9384(83)90279-2
复制
发表时间：
1983
影响因子：
2.9
通讯作者：
B. Hart
中科院分区：
文献类型：
--
作者：
B. Hart
许多实验证明，当雄性大鼠与雌性大鼠接触时，它们的黄体生成素和睾酮的分泌显着增加。这种反应可以适应与交配相关的其他先前中性的刺激。最近的研究强调了阴茎反射对血液睾酮浓度波动的显着敏感性。其他工作指出了阴茎反射在精塞去除和沉积中的作用。据推测，阴茎反射因响应性相关线索而发生的睾酮增加而增强，并且增强的反射在多雄性交配过程中的精子竞争中发挥作用。精子竞争的核心是雄性大鼠将其他雄性留在阴道中的精塞移出并尽可能紧密地放置自己的精塞以抵抗另一只雄性大鼠移出的能力。
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.