Ecology and allometry predict the evolution of avian developmental durations
Ecology and allometry predict the evolution of avian developmental durations
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DOI：
10.1038/s41467-020-16257-x
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发表时间：
2020-05-14
影响因子：
16.6
通讯作者：
Wright, Alison E.
中科院分区：
文献类型：
--
作者：
Cooney, Christopher R.;Sheard, Catherine;Wright, Alison E.
发育期的持续时间代表了生活史变化的基本轴，但目前缺乏关于这种多样性的驱动因素的广泛见解。在这里，我们测试的机制和生态学的解释，利用胚胎学数据和信息的孵化和3096种鸟类的发育持续时间的演变。主要与生长相关的发育阶段是最长和最可变的，与异速生长限制在确定发育持续时间中的作用一致。此外，发育持续时间保留了深刻的进化历史和物种之间的身体大小的差异解释比以前认为的变化少的印记。最后，我们揭示了生态相关的发展持续时间，包括变量与相对安全的发展环境和压力的繁殖物候。总的来说，我们的研究结果提供了广泛的洞察力的相对重要性，机械，生态和进化的限制，在塑造这个关键的生活史特征的多样化。发育持续时间是一个关键的生活史特征。库尼等人收集了3096种鸟类的数据，以量化系统发育史、体型和生态变量（如捕食风险或繁殖物候）对发育持续时间变化的影响程度。
The duration of the developmental period represents a fundamental axis of life-history variation, yet broad insights regarding the drivers of this diversity are currently lacking. Here, we test mechanistic and ecological explanations for the evolution of developmental duration using embryological data and information on incubation and fledging for 3096 avian species. Developmental phases associated primarily with growth are the longest and most variable, consistent with a role for allometric constraint in determining the duration of development. In addition, developmental durations retain a strong imprint of deep evolutionary history and body size differences among species explain less variation than previously thought. Finally, we reveal ecological correlates of developmental durations, including variables associated with the relative safety of the developmental environment and pressures of breeding phenology. Overall, our results provide broad-scale insight into the relative importance of mechanistic, ecological and evolutionary constraints in shaping the diversification of this key life-history trait. Developmental duration is a key life-history trait. Cooney et al. compile data on 3096 bird species to quantify the degree to which phylogenetic history, body size and ecological variables like predation risk or breeding phenology influence variation in developmental duration.