Melniczek J R, Ward I L
Department of Psychology, Villanova University, PA 19085.
Physiol Behav. 1994 Sep;56(3):457-61. doi: 10.1016/0031-9384(94)90287-9.
The duration of ano-genital (AG) licking received by control and prenatally stressed male and female rat pups was compared under several testing conditions and ages. When tested with their own litters on day 2 postpartum. Sprague-Dawley dams stressed by exposure to intense light and restraint from days 14-21 of pregnancy spent as much time licking their pups as control dams. When tested with unfamiliar 8-9 day old pups both groups of mothers licked males more than females, but exhibited the same amount of licking toward males from control and prenatally stressed litters. When given simultaneous access to unfamiliar 11-12 day old control and prenatally stressed males, neither stressed nor control mothers displayed distinguishable patterns of licking. In adulthood a larger proportion of prenatally stressed than control males exhibited the female lordotic pattern, but a smaller percentage ejaculated. The data do not support previous suggestions that the abnormal sexual behavior patterns shown by prenatally stressed male rats are related to insufficient levels of AG stimulation received during neonatal ontogeny.
在几种测试条件和不同年龄段下，对对照组以及产前应激的雄性和雌性大鼠幼崽接受肛门生殖器（AG）舔舐的持续时间进行了比较。产后第2天与自己的同窝幼崽一起接受测试时，在孕期第14 - 21天暴露于强光并受到束缚应激的斯普拉格 - 道利母鼠舔舐幼崽的时间与对照组母鼠相同。当与不熟悉的8 - 9日龄幼崽一起测试时，两组母鼠舔雄性幼崽的次数都多于雌性，但对对照组和产前应激同窝幼崽的雄性幼崽舔舐次数相同。当同时接触不熟悉的11 - 12日龄对照组和产前应激的雄性幼崽时，应激组和对照组母鼠均未表现出明显的舔舐模式差异。成年后，产前应激的雄性大鼠比对照组雄性大鼠有更大比例表现出雌性的脊柱前凸姿势，但射精的比例较小。这些数据不支持先前的观点，即产前应激的雄性大鼠所表现出的异常性行为模式与新生儿发育过程中接受的AG刺激水平不足有关。
