Abstract Humans exhibit an unusual pattern of sexual behavior compared to other mammalian females. Women's extended sexuality has been hypothesized to be related to a variety of possible benefits, especially non-genetic reproductive benefits, such as securing male investment via reinforced pairbonds or paternity confusion. But sexual behavior also comes at a cost, particularly for pregnant women, in terms of energetic costs, potential disease, and possible harm to the fetus. We hypothesize, therefore, that sexual behavior in pregnant women should reflect adaptive strategies and that pregnant women will be particularly strategic about their sexual behavior in order to maximize potential benefits while minimizing potential costs. One hundred twelve pregnant women completed a survey of their partners' qualities and their sexual desires toward their primary partners and men other than their primary partners. Results showed that women's perceptions of relationship threat positively predicted sexual desire for primary partners, while their perceptions of their partner's investing qualities negatively predicted sexual desire for extra-pair mates. These qualities, as well as cues to partner's genetic quality and gestation age, also interacted in ways that suggest that pregnant women's sexual desires are sensitive to cues of future investment and relationship stability.

中文翻译：

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女性怀孕期间的性策略

摘要 与其他哺乳动物女性相比，人类表现出一种不寻常的性行为模式。女性的性行为被假设与各种可能的好处有关，尤其是非遗传性的生殖好处，例如通过加强配对或父权混淆来确保男性投资。但性行为也需要付出代价，尤其是对孕妇而言，在精力充沛、潜在疾病和对胎儿可能造成的伤害方面。因此，我们假设孕妇的性行为应该反映适应性策略，并且孕妇对其性行为会特别具有战略性，以最大限度地提高潜在利益，同时最大限度地降低潜在成本。112 名孕妇完成了对其伴侣的调查 对主要伴侣和主要伴侣以外的男性的品质和性欲。结果表明，女性对关系威胁的看法积极预测了主要伴侣的性欲，而她们对伴侣投资品质的看法则消极预测了对额外伴侣的性欲。这些品质，以及伴侣遗传品质和孕龄的线索，也以某种方式相互作用，表明孕妇的性欲对未来投资和关系稳定性的线索很敏感。s 投资品质负面预测了对多对伴侣的性欲。这些品质，以及伴侣遗传品质和孕龄的线索，也以某种方式相互作用，表明孕妇的性欲对未来投资和关系稳定性的线索很敏感。s 投资品质负面预测了对多对伴侣的性欲。这些品质，以及伴侣遗传品质和孕龄的线索，也以某种方式相互作用，表明孕妇的性欲对未来投资和关系稳定性的线索很敏感。