Population genomics of rapid evolution in natural populations: polygenic selection in response to power station thermal effluents.

ABSTRACT:

Background

Examples of rapid evolution are common in nature but difficult to account for with the standard population genetic model of adaptation. Instead, selection from the standing genetic variation permits rapid adaptation via soft sweeps or polygenic adaptation. Empirical evidence of this process in nature is currently limited but accumulating.

Results

We provide genome-wide analyses of rapid evolution in Fundulus heteroclitus populations subjected to recently elevated temperatures due to coastal power station thermal effluents using 5449 SNPs across two effluent-affected and four reference populations. Bayesian and multivariate analyses of population genomic structure reveal a substantial portion of genetic variation that is most parsimoniously explained by selection a

SUBMITTER: Dayan DI 

PROVIDER: S-EPMC6390305 | biostudies-literature | 2019 Feb

REPOSITORIES: biostudies-literature