Dewsbury D A, Shapiro L E, Taylor S A
Department of Psychology, University of Florida, Gainesville 32611.
Physiol Behav. 1987;41(1):53-8. doi: 10.1016/0031-9384(87)90130-2.
Six experiments were conducted to analyze possible disruption of sperm transport occurring when one male deer mouse copulates soon after another male ejaculates. When a second male mated soon after the first, females had significantly fewer uterine sperm 1 hr later than when a delay of 7 or 15 min was imposed between males. However, it was impossible to detect any effect of such disruption on pregnancy initiation. Similarly, artificial stimulation soon after an ejaculation was ineffective in disrupting pregnancy initiation. No effect of a rapid resumption of copulation could be detected on litter composition in a sperm competition situation. Although it is clear, from these and other data, that the phenomenon of ejaculate disruption occurs in deer mice, technical difficulties may interfere with experimental analysis.
进行了六项实验，以分析当一只雄性鹿鼠在另一只雄性射精后不久交配时，精子运输可能受到的干扰。当第二只雄性在第一只之后很快交配时，与雄性之间间隔7或15分钟相比，1小时后雌性子宫内的精子明显减少。然而，无法检测到这种干扰对怀孕起始的任何影响。同样，射精后不久进行人工刺激对怀孕起始也没有效果。在精子竞争情况下，未检测到快速恢复交配对窝仔组成有任何影响。尽管从这些和其他数据中可以清楚地看出，射精干扰现象在鹿鼠中存在，但技术困难可能会干扰实验分析。
