综合的家族遗传特征估计支持在生态多样化的蝙蝠家族Phyllostomidae中祖先的杂食
Xueling Yi1,2,3, Dimitrios-Georgios Kontopoulos1,2,3, Michael Hiller1,2,3
1LOEWE Centre for Translational Biodiversity Genomics, Frankfurt, Germany.
Evolution; international journal of organic evolution
|September 22, 2025
概括
叶鼻蝙蝠 (Phyllostomidae) 祖先的万食性可能为它们的适应性辐射提供了燃料. 虽然普遍性是关键,但利基分割对于多样化至关重要,如蝙蝠所见.
科学领域:
- 进化生物学 进化生物学
- 人类遗传学 是一个学科.
- 饮食生态学 饮食生态学
背景情况:
- 适应性辐射需要不同的利基和通用主义祖先,但测试祖先的饮食是具有挑战性的.
- 新世界叶鼻蝙蝠 (Phyllostomidae) 具有多样化的饮食,但它们的祖先饮食仍在争论中,之前的研究表明它们是昆虫食.
- 之前的饮食估计受限于单一特征模型,受限制的过渡和未解决的家族遗传不确定性.
研究的目的:
- 为了研究类蝙蝠家族的祖先饮食及其在它们适应性辐射中的作用.
- 通过采用多特征和多变量模型来克服先前研究的局限性,这些模型可以解释家族遗传不确定性.
主要方法:
- 利用了离散饮食 (141种) 的多响应类遗传值模型和连续饮食 (109种) 的多变量布朗运动模型.
- 纳入已发表的哺乳动物谱系,以明确解决饮食估计中的遗传学不确定性.
- 分析了Phyllostomidae的已发布数据集中的饮食数据,并将分析扩展到所有蝙蝠家族 (621种).
主要成果:
- 在共同的祖先和Phyllostomidae的早期辐射中推断出补充的水果消费,支持祖先的杂食.
- 在四个蝙蝠家族中确定了祖先的果实食的独立进化,但只有Phyllostomidae和Pteropodidae实现了占主导地位的果实食和高多样性.
- 证明祖先的泛性 (万象性) 是适应性辐射的必要条件,但不够条件.
结论:
- 祖先的杂食在促进新世界叶鼻蝙蝠的适应辐射方面发挥了关键作用.
- 适应性辐射是一个复杂的过程,需要祖先的泛化和随后的生态利基分割.
- 这些发现突出了祖先特征与推动进化多样化的生态因素之间的相互作用.
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