Convergent Evolution During Local Adaptation to Patchy Landscapes.

ABSTRACT: Species often encounter, and adapt to, many patches of similar environmental conditions across their range. Such adaptation can occur through convergent evolution if different alleles arise in different patches, or through the spread of shared alleles by migration acting to synchronize adaptation across the species. The tension between the two reflects the constraint imposed on evolution by the underlying genetic architecture versus how effectively selection and geographic isolation act to inhibit the geographic spread of locally adapted alleles. This paper studies the balance between these two routes to adaptation in a model of continuous environments with patchy selection pressures. We address the following questions: How long does it take for a novel allele to appear in a patch where it

SUBMITTER: Ralph PL 

PROVIDER: S-EPMC4646681 | biostudies-literature | 2015 Nov

REPOSITORIES: biostudies-literature