A coalescent-based estimator of genetic drift, and acoustic divergence in the Pteronotus parnellii species complex.

ABSTRACT: Determining the processes responsible for phenotypic variation is one of the central tasks of evolutionary biology. While the importance of acoustic traits for foraging and communication in echolocating mammals suggests adaptation, the seldom-tested null hypothesis to explain trait divergence is genetic drift. Here we derive F_ST values from multi-locus coalescent isolation-with-migration models, and couple them with estimates of quantitative trait divergence, or P_ST, to test drift as the evolutionary process responsible for phenotypic divergence in island populations of the Pteronotus parnellii species complex. Compared to traditional comparisons of P_ST to F_ST, the migration-based estimates of F_ST are unidirectional instead of bidirect

SUBMITTER: Davalos LM 

PROVIDER: S-EPMC6460761 | biostudies-literature | 2019 Apr

REPOSITORIES: biostudies-literature