Rules of teeth development align microevolution with macroevolution in extant and extinct primates
Rules of teeth development align microevolution with macroevolution in extant and extinct primates
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DOI：
10.1038/s41559-023-02167-w
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发表时间：
2023-08-31
影响因子：
16.8
通讯作者：
Uyeda，Josef C.
中科院分区：
文献类型：
--
作者：
Machado，Fabio A.;Mongle，Carrie S.;Uyeda，Josef C.
宏观进化生物学家经典地拒绝了更高水平的分化模式是通过种群内的微观进化过程产生的这一概念。就形态而言，这一共识部分源于数量遗传学模型无法正确预测数百万年尺度上进化过程的行为。发展研究(EVO-DEVO)被提出协调微观和宏观进化。然而，在建立一个正式的框架来应用表型多样化的EVO-DEVO模型方面进展甚微。在这里，我们通过询问使用Evo-DEVO模型来量化生物变异是否可以提高比较模型的解释能力，从而帮助我们弥合微观和宏观进化之间的差距来重新审视这个问题。我们通过评估灵长类动物下臼齿的进化来验证这一预测，该数据集中在现存和灭绝的类群中进行了密集采样。我们的结果表明，生物信息的形态空间与定量遗传学模型一起，允许在微观和宏观尺度之间无缝转换，而生物不信息的空间则不能。我们发现灵长类牙齿的适应景观是走廊状的，走廊内的形态变化几乎是中性的。总体而言，我们的框架为将EVO-DEVO整合到现代合成中提供了基础，允许以一种可操作的方式来评估宏观进化的最终原因。
Macroevolutionary biologists have classically rejected the notion that higher-level patterns of divergence arise through microevolutionary processes acting within populations. For morphology, this consensus partly derives from the inability of quantitative genetics models to correctly predict the behaviour of evolutionary processes at the scale of millions of years. Developmental studies (evo-devo) have been proposed to reconcile micro- and macroevolution. However, there has been little progress in establishing a formal framework to apply evo-devo models of phenotypic diversification. Here we reframe this issue by asking whether using evo-devo models to quantify biological variation can improve the explanatory power of comparative models, thus helping us bridge the gap between micro- and macroevolution. We test this prediction by evaluating the evolution of primate lower molars in a comprehensive dataset densely sampled across living and extinct taxa. Our results suggest that biologically informed morphospaces alongside quantitative genetics models allow a seamless transition between the micro- and macroscales, whereas biologically uninformed spaces do not. We show that the adaptive landscape for primate teeth is corridor like, with changes in morphology within the corridor being nearly neutral. Overall, our framework provides a basis for integrating evo-devo into the modern synthesis, allowing an operational way to evaluate the ultimate causes of macroevolution.