Predictable allele frequency changes due to habitat fragmentation in the Glanville fritillary butterfly.

ABSTRACT: Describing the evolutionary dynamics of now extinct populations is challenging, as their genetic composition before extinction is generally unknown. The Glanville fritillary butterfly has a large extant metapopulation in the Åland Islands in Finland, but declined to extinction in the nearby fragmented southwestern (SW) Finnish archipelago in the 20th century. We genotyped museum samples for 222 SNPs across the genome, including SNPs from candidate genes and neutral regions. SW Finnish populations had significantly reduced genetic diversity before extinction, and their allele frequencies gradually diverged from those in contemporary Åland populations over 80 y. We identified 15 outlier loci among candidate SNPs, mostly related to flight, in which allele frequencies have changed more than th

SUBMITTER: Fountain T 

PROVIDER: S-EPMC4791001 | biostudies-literature | 2016 Mar

REPOSITORIES: biostudies-literature