Range-wide spatial mapping reveals convergent character displacement of bird song.

ABSTRACT: A long-held view in evolutionary biology is that character displacement generates divergent phenotypes in closely related coexisting species to avoid the costs of hybridization or ecological competition, whereas an alternative possibility is that signals of dominance or aggression may instead converge to facilitate coexistence among ecological competitors. Although this counterintuitive process-termed convergent agonistic character displacement-is supported by recent theoretical and empirical studies, the extent to which it drives spatial patterns of trait evolution at continental scales remains unclear. By modelling the variation in song structure of two ecologically similar species of Hypocnemis antbird across western Amazonia, we show that their territorial signals converge such that tr

SUBMITTER: Kirschel ANG 

PROVIDER: S-EPMC6532499 | biostudies-literature | 2019 May

REPOSITORIES: biostudies-literature