周期长度灵活性:性接受度的持续时间是否与社会压力的变化有关?
Fragkiskos Darmis1, Élise Huchard2, Guy Cowlishaw3
1Department of Anthropology, University College London, London, UK.
Royal Society open science
|November 30, 2023
概括
雌性查克马不会根据社会压力调整性感受时间. 然而,较长的性膨胀期与较小的群体规模有关,这表明在竞争环境中发出信号的潜在成本.
科学领域:
- 灵长类的行为生态学
- 社会哺乳动物的繁殖策略
- 性冲突与竞争性冲突与竞争性竞争
背景情况:
- 雌性社会哺乳动物采用复杂的策略来导航生殖竞争和性冲突.
- 性感受性,通常通过像灵长类动物的胀这样的身体变化来信号,是这些相互作用的关键时期.
- 对于女性是否能够根据社会动态调节受感持续时间仍未经过测试.
研究的目的:
- 调查社会压力是否影响野生雌性查克马 (Papio ursinus) 性感受力的持续时间.
- 探索社会环境和女性生殖信号策略之间的关系.
主要方法:
- 在纳米比亚,对46只野生雌性查克马15年的157个排卵周期进行了分析.
- 量化性感受度的持续时间和最大的胀.
- 检查受体性特征与社会因素之间的相关性,使用集团规模作为集团内部竞争的代理.
主要成果:
- 没有证据支持这样的假设,即女性调整受感持续时间,以减轻竞争或胁迫.
- 在最大性胀持续时间和组大小之间观察到显著的负相关性.
- 这表明,较大的群体规模,表明竞争更强,与较短的膨胀期有关.
结论:
- 雌性查克马似乎不会为了应对社会压力而操纵性感受时间.
- 性膨胀可能在能源上昂贵,导致在更具竞争力,更大的群体中信号更短.
- 这项研究为未来关于女性对生殖信号的控制及其适应意义的研究奠定了基础.
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