雌性黑猩猩避免近亲繁殖,即使存在大量的双性恋爱情
Lauren C White1,2, Veronika Städele3, Sebastian Ramirez Amaya3
1Department of Primatology, Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany.
Royal Society open science
|January 18, 2024
概括
黑猩猩可能会通过双性恋爱情来避免近亲繁殖,这意味着两性都会留在他们的出生组中. 这项研究在一个相对安静的社区中发现了这种行为的证据,尽管存在风险,但雌性避开杂交后代.
科学领域:
- 灵长类动物的行为
- 进化生物学是进化的生物学.
- 保护遗传学 保护遗传学
背景情况:
- 亲生生殖抑郁症经常推动亲生生殖避免策略的演变.
- 黑猩猩 (Pan troglodytes) 由于其生命历史特征,预计将避免近亲繁殖.
- 双性恋恋,即两性都留在他们的出生群体中,是假设的,但在不受干扰的黑猩猩群体中没有得到充分的证据.
研究的目的:
- 研究一个相对不受干扰的东部黑猩猩 (P. t. schweinfurthii) 社区的分散和内生动态.
- 为了确定双性恋性爱是否在黑猩猩中自然发生.
- 评估这种社会结构内的雌性内生避免策略的有效性.
主要方法:
- 利用了14年的观测数据.
- 分析了来自459个个体的256,481个位点的大型基因组数据集.
- 记录的分散模式和内生繁殖率.
主要成果:
- 记录了在一个相对不受干扰的黑猩猩社区中第一次出现大量的双性恋爱情.
- 观察到,在生殖年龄之前没有分散的雌性仍然设法避免产生杂交后代.
- 表明避开近亲繁殖的机制是有效的,即使增加了亲戚亲近.
结论:
- 显著的双性恋爱情可以在黑猩猩种群中自然发生,人类干扰最小.
- 雌性黑猩猩拥有有效的策略来避免近亲繁殖,即使面临由于出生组居住而增加的风险.
- 这些发现对理解黑猩猩的社会进化和保护策略有影响.
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