Understanding the effect of competition during evolutionary radiations: an integrated model of phenotypic and species diversification
Understanding the effect of competition during evolutionary radiations: an integrated model of phenotypic and species diversification
复制标题
DOI：
10.1111/ele.13385
复制
发表时间：
2019-12-01
期刊：
影响因子：
8.8
通讯作者：
Morlon, Helene
中科院分区：
文献类型：
--
作者：
Aristide, Leandro;Morlon, Helene
竞争可以驱动宏观进化变化，例如在适应性辐射期间。然而，我们仍然缺乏对它如何塑造多样化进程和模式的明确理解。为了更好地理解竞争的宏观进化后果，以及在系统发育数据上留下的信号，我们开发了一个模型，将生态环境中的性状进化和物种多样性联系起来。我们发现四个主要结果：第一，竞争刺激性状多样性，但不一定是物种丰富度;第二，即使在没有明确的生态限制的情况下，竞争也会减缓物种多样化，但即使在存在这种限制的情况下，竞争也不会减缓表型多样化;第三，早期爆发模式不能提供测试适应性辐射的可靠方法;第四，在性状数据中寻找系统发育信号，支持包含竞争的表型模型是一个更好的选择。我们的研究结果澄清了竞争的宏观进化后果，并可以帮助设计更强大的测试自然界中的适应性辐射。
Competition can drive macroevolutionary change, for example during adaptive radiations. However, we still lack a clear understanding of how it shapes diversification processes and patterns. To better understand the macroevolutionary consequences of competition, as well as the signal left on phylogenetic data, we developed a model linking trait evolution and species diversification in an ecological context. We find four main results: first, competition spurs trait diversity but not necessarily species richness; second, competition produces slowdowns in species diversification even in the absence of explicit ecological limits, but not in phenotypic diversification even in the presence of such limits; third, early burst patterns do not provide a reliable way of testing for adaptive radiations; and fourth, looking for phylogenetic signal in trait data and support for phenotypic models incorporating competition is a better alternative. Our results clarify the macroevolutionary consequences of competition and could help design more powerful tests of adaptive radiations in nature.