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ARISTIDE leandro

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Título:

Understanding the effect of competition during evolutionary radiations: an integrated model of phenotypic and species diversification

Autor/es:

ARÍSTIDE, L; MORLON, HÉLÈNE

Revista:

ECOLOGY LETTERS

Editorial:

WILEY-BLACKWELL PUBLISHING, INC

Referencias:

Lugar: Londres; Año: 2019

ISSN:

1461-023X

Resumen:

Competitioncan drive macroevolutionary change, for example during adaptive radiations.However, we still lack a clear understanding of how it shapes diversificationprocesses and patterns. To better understand the macroevolutionary consequencesof competition, as well as the signal left on phylogenetic data, we developed amodel linking trait evolution and species diversification in an ecologicalcontext. We find four main results: first, competition spurs trait diversity but not necessarilyspecies richness; second, competition produces slowdowns in species diversificationeven in the absence of explicit ecological limits, but not in phenotypicdiversification even in the presence of such limits; third, early burst patternsdo not provide a reliable way of testing for adaptive radiations; and fourth, lookingfor phylogenetic signal in trait data and support for phenotypic modelsincorporating competition is a better alternative. Our results clarify themacroevolutionary consequences of competition and could help design more powerfultests of adaptive radiations in nature.

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