刚开始的脑体共同进化与已建立的灵长类物种 - - 评估辛普森的"最重要的区别"
Folmer Bokma1,2, Masahito Tsuboi2,3, Nils Chr Stenseth2
1Department of Environmental and Life Sciences, Karlstad University, Karlstad, Sweden.
Evolution; international journal of organic evolution
|November 19, 2024
概括
变种事件驱动了灵长类大脑和身体大小的显著,加速的变化,占大多数变异. 这些进化突发不同于渐进的微观进化,这表明物种形成期间的约束较轻松.
科学领域:
- 进化生物学是进化的生物学.
- 进行比较的基因组学.
- 灵长类动物的进化
背景情况:
- 了解表型进化的节奏和模式对于进化生物学至关重要.
- 区分逐渐的微观进化变化和在物种化过程中发生的变化是一个关键的挑战.
研究的目的:
- 调查物种化是否涉及与微观进化截然不同的过程.
- 分析物种化对灵长类物种中大脑和身体尺寸的表型变异的贡献.
主要方法:
- 灵长类动物大脑和身体大小的基因组学比较分析.
- 现型共变的分解成物种化和异基因组分.
主要成果:
- 大约50%的物种化事件显示了大脑和身体尺寸的加速表型变化.
- 品种变化约占现存灵长类物种现型变异的58%.
- 大脑和身体尺寸的特异性变化与渐进的微观进化变化相比,相关性较小,表明放松的全度约束.
结论:
- 现型进化在物种化过程中加速.
- 品种化涉及独特的进化事件,这些进化事件通常不会在微观进化时间尺度中观察到.
- 在物种化过程中,大脑和身体尺寸的强烈全度约束在物种化过程中放松.
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