Different selection regimes explain morphological evolution in fossorial lizards

IF 4.6 1区环境科学与生态学 Q1 ECOLOGY Functional Ecology Pub Date : 2024-03-31 DOI:10.1111/1365-2435.14557

Vinicius Anelli, Melissa Bars-Closel, Anthony Herrel, Tiana Kohlsdorf

引用次数: 0

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不同的选择机制解释了化石蜥蜴的形态进化

类似表型的独立起源在进化过程中无处不在，并会引起强烈和反复的环境关联。蛇形蜥蜴进化了多次，通常被描述为肢体减少和身体延长的结果，这些都是与穴居有关的共同选择的结果。然而，包括特定头部特征和地下微生境细微差别在内的精细评估揭示了某种程度的独特性，即使在传统上被解释为表型相似的品系之间也是如此。在这里，我们探讨了穴居蜥蜴的选择机制，考虑了穴居基质的差异，除了身体和四肢外，还强调了头部形状。我们建立了一个由来自所有主要蜥蜴支系的 213 个物种组成的非形态学数据库，然后描述了当代形态多样性的特征，并建立了表型进化模型，以验证化石蜥蜴至少包含两种不同选择机制的假说。我们在化石蜥蜴中发现了两个非形态群：潮湿土壤化石蜥蜴群和干燥土壤化石蜥蜴群。两类蜥蜴在头型和肢体大小方面都朝着不同的最佳适应性方向进化。尽管有一定程度的独特性，但这两个类群在特定性状上也有相似的模式。与潮湿土壤化石蜥蜴相比，干燥土壤化石蜥蜴的形态变异较小，这可能是由于不同的选择压力与共同的祖先相结合造成的。我们的研究提供的证据表明，尽管表型特征总体上趋同，但通常被解释为一般的适应性机制（如化石性）实际上可能包含足够的生态和功能多样性，从而引起几种不同的形态学关联。在期刊博客上免费阅读本文的通俗摘要。

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来源期刊

Functional Ecology 环境科学-生态学

CiteScore

9.00

自引率

1.90%

发文量

243

审稿时长

4 months

期刊介绍： Functional Ecology publishes high-impact papers that enable a mechanistic understanding of ecological pattern and process from the organismic to the ecosystem scale. Because of the multifaceted nature of this challenge, papers can be based on a wide range of approaches. Thus, manuscripts may vary from physiological, genetics, life-history, and behavioural perspectives for organismal studies to community and biogeochemical studies when the goal is to understand ecosystem and larger scale ecological phenomena. We believe that the diverse nature of our journal is a strength, not a weakness, and we are open-minded about the variety of data, research approaches and types of studies that we publish. Certain key areas will continue to be emphasized: studies that integrate genomics with ecology, studies that examine how key aspects of physiology (e.g., stress) impact the ecology of animals and plants, or vice versa, and how evolution shapes interactions among function and ecological traits. Ecology has increasingly moved towards the realization that organismal traits and activities are vital for understanding community dynamics and ecosystem processes, particularly in response to the rapid global changes occurring in earth’s environment, and Functional Ecology aims to publish such integrative papers.