在雄性黑猩猩中修饰网络的变化在Ngogo的永久社区裂变之前
1Department of Anthropology, Yale University, New Haven, Connecticut, USA.
American journal of primatology
|September 26, 2025
概括
恩戈戈黑猩猩社区由于雌性种群的变化而分裂,而不是雄性种群的变化. 这表明男性生殖竞争,而不是社会网络的约束,推动了永久的社区分裂.
科学领域:
- 灵长类的社会行为
- 行为生态学 行为生态学
- 灵长类动物学 灵长类动物学
背景情况:
- 黑猩猩群体表现出裂变融合动态和敌对的社区间关系.
- 永久的社区分裂是罕见的,戈贝是以前已知的案例.
- 自2010年以来,乌干达的大型恩戈戈黑猩猩群体已经经历了逐渐的永久裂变.
研究的目的:
- 调查Ngogo黑猩猩社区永久裂变的驱动因素.
- 为了确定增加的男性数量或女性人口动态是否影响了裂变.
- 为了测试这个假设,男性生殖竞争,而不是社会网络的约束,导致了分裂.
主要方法:
- 分析了来自哥黑猩猩社区 (自1995年以来) 的长期观测数据.
- 检查男性-男性理网络特征和社区范围的协会数据.
- 修护网络的变化与男性和女性人口规模的变化以及居住决策的比较.
主要成果:
- 培养网络在2011年左右显示出差异化,先前的行为迹象表明分裂.
- 雌性数量的增加及其居住决定对雄性理网络产生了重大影响.
- 男人数量的增加对男性理网络的解散的影响较小.
结论:
- 恩戈戈黑猩猩社区的永久分裂主要是由与雌性人口动态和雄性生殖竞争相关的因素驱动的.
- 这些发现挑战了该模型,该模型认为雄性理网络的群体规模限制是灵长类社会分裂的主要驱动因素.
- 雌性生殖策略及其对雄性社会动态的影响在理解黑猩猩社区稳定性和分裂方面显得至关重要.
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