Toner J P, Attas A I, Adler N T
Physiol Behav. 1987;39(3):371-5. doi: 10.1016/0031-9384(87)90237-x.
In the rat, the transport of sperm from the vagina, where they are deposited at ejaculation, into the uterus is not automatic. Various behavioral and physiological factors influence this transport process: the number of pre-ejaculatory intromissions, the duration of immobility at ejaculation, and the fit of the copulatory plug. The interplay of these three factors in producing adequate sperm transport, and their relations with each other, were examined in 52 female rats that received various numbers of pre-ejaculatory intromissions (from 0 to more than 15). The number of intromissions was strongly related to all other measures. Ejaculatory immobility was associated with better fitting copulatory plugs when females received few intromissions. Sperm transport was most strongly predicted by plug fit. Intromissions were a major predictor of good fitting copulatory plugs and transcervical sperm transport; immobility did not mediate intromission's influence and did not have a major independent role.
在大鼠中，精子从射精时沉积的阴道输送到子宫并非自动发生。多种行为和生理因素会影响这一输送过程：射精前插入的次数、射精时静止不动的持续时间以及交配栓的适配情况。在52只接受了不同射精前插入次数（从0次到超过15次）的雌性大鼠中，研究了这三个因素在产生足够精子输送方面的相互作用及其相互关系。插入次数与所有其他指标密切相关。当雌性接受的插入次数较少时，射精时的静止不动与适配性更好的交配栓相关。精子输送最有力的预测因素是交配栓的适配情况。插入次数是适配性良好的交配栓和经宫颈精子输送的主要预测因素；静止不动并未介导插入次数的影响，也没有主要的独立作用。
