AFLPs and mitochondrial haplotypes reveal local adaptation to extreme thermal environments in a freshwater gastropod.

ABSTRACT: The way environmental variation shapes neutral and adaptive genetic variation in natural populations is a key issue in evolutionary biology. Genome scans allow the identification of the genetic basis of local adaptation without previous knowledge of genetic variation or traits under selection. Candidate loci for divergent adaptation are expected to show higher FST than neutral loci influenced solely by random genetic drift, migration and mutation. The comparison of spatial patterns of neutral markers and loci under selection may help disentangle the effects of gene flow, genetic drift and selection among populations living in contrasting environments. Using the gastropod Radix balthica as a system, we analyzed 376 AFLP markers and 25 mtDNA COI haplotypes for candidate loci and associations

SUBMITTER: Quintela M 

PROVIDER: S-EPMC4090234 | biostudies-literature | 2014

REPOSITORIES: biostudies-literature