女性力量的驱动者在红猩猩中的力量
Martin Surbeck1,2, Leveda Cheng3, Melodie Kreyer4
1Harvard University, Department of Human Evolutionary Biology, Cambridge, USA. msurbeck@fas.harvard.edu.
Communications biology
|April 24, 2025
概括
通过组建联盟,雌性博会在雄性上获得主导地位. 这种社会策略使得女性能够达到更高的社会地位,即使在有男性偏见的尺寸差异的物种中也是如此.
科学领域:
- 灵长类动物的行为
- 社会主导地位 社会主导地位
- 哺乳动物的性二态.
背景情况:
- 在哺乳动物中,女性的优势很少见,即使在具有男性偏向性二态的物种中也是如此.
- 牛 (Pan paniscus) 尽管有男性的尺寸优势,但表现出女性的优势,这是一个独特的研究案例.
- 了解跨性别力量动态对于进化生物学来说至关重要.
研究的目的:
- 为了测试解释女性在红猩猩中占主导地位的假设.
- 调查冲突结果,伴侣竞争和女性联盟在性别间权力的作用.
- 确定博动物中雌性地位的主要驱动因素.
主要方法:
- 分析了30年来来自6个野生博诺博群体的人口和行为数据.
- 对跨性别冲突和联盟行为进行定量评估.
- 统计测试来自三种不同的权力动态假设的预测.
主要成果:
- 女性联盟的形成是数据支持的唯一假设.
- 在85%的观察案例中,类动物形成了针对男性的联盟.
- 增加女性联盟的频率与相对于男性的较高女性社会地位相关.
结论:
- 雌性联盟形成是建立和维持雌性对雄性主导地位的关键行为机制.
- 这一策略使得女性能够克服男性的身体优势,例如尺寸变态.
- 这些发现突显了灵长类权力结构中女性社会联系的适应意义.
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