Shackelford Todd K, Goetz Aaron T, McKibbin William F, Starratt Valerie G
Department of Psychology, Florida Atlantic University, Davie, FL 33314, USA.
J Comp Psychol. 2007 May;121(2):214-20. doi: 10.1037/0735-7036.121.2.214.
Sperm competition occurs when the sperm of multiple males concurrently occupy the reproductive tract of a female and compete to fertilize an egg. We used a questionnaire to investigate psychological responses to the risk of sperm competition for 237 men in committed, sexual relationships. As predicted, a man who spends a greater (relative to a man who spends a lesser) proportion of time apart from his partner since the couple's last copulation reported (a) greater sexual interest in his partner, (b) greater distress in response to his partner's sexual rejection, and (c) greater sexual persistence in response to his partner's sexual rejection. All effects were independent of total time since the couple's last copulation and the man's relationship satisfaction. Discussion addresses limitations of the current research and situates the current results within the broader comparative literature on adaptation to sperm competition.
当多个雄性的精子同时占据雌性的生殖道并竞争使卵子受精时，就会发生精子竞争。我们通过问卷调查，对237名处于稳定恋爱关系且有性行为的男性对精子竞争风险的心理反应进行了调查。正如所预测的那样，自夫妻上次交配以来，与伴侣分开时间比例更大（相对于分开时间比例较小的男性）的男性报告称：（a）对伴侣有更大的性兴趣；（b）对伴侣的性拒绝反应更痛苦；（c）对伴侣的性拒绝反应有更强的性坚持。所有影响均独立于夫妻上次交配后的总时间以及男性的关系满意度。讨论部分阐述了当前研究的局限性，并将当前结果置于关于适应精子竞争的更广泛比较文献之中。
