Journal article

Male-biased sexual selection, but not sexual dichromatism, predicts speciation in birds

Justin G Cally, Devi Stuart-Fox, Luke Holman, James Dale, Iliana Medina

EVOLUTION | WILEY | Published : 2021

Abstract

Sexual selection is thought to shape phylogenetic diversity by affecting speciation or extinction rates. However, the net effect of sexual selection on diversification is hard to predict because many of the hypothesized effects on speciation or extinction have opposing signs and uncertain magnitudes. Theoretical work also suggests that the net effect of sexual selection on diversification should depend strongly on ecological factors, though this prediction has seldom been tested. Here, we test whether variation in sexual selection can predict speciation and extinction rates across passerine birds (up to 5812 species, covering most genera) and whether this relationship is mediated by environm..

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University of Melbourne Researchers