Locally Adaptive Inversions Modulate Genetic Variation at Different Geographic Scales in a Seaweed Fly.

ABSTRACT: Across a species range, multiple sources of environmental heterogeneity, at both small and large scales, create complex landscapes of selection, which may challenge adaptation, particularly when gene flow is high. One key to multidimensional adaptation may reside in the heterogeneity of recombination along the genome. Structural variants, like chromosomal inversions, reduce recombination, increasing linkage disequilibrium among loci at a potentially massive scale. In this study, we examined how chromosomal inversions shape genetic variation across a species range and ask how their contribution to adaptation in the face of gene flow varies across geographic scales. We sampled the seaweed fly Coelopa frigida along a bioclimatic gradient stretching across 10° of latitude, a salinity gradient,

SUBMITTER: Merot C 

PROVIDER: S-EPMC8382925 | biostudies-literature | 2021 Aug

REPOSITORIES: biostudies-literature