Temporal genomic contrasts reveal rapid evolutionary responses in an alpine mammal during recent climate change.

ABSTRACT: Many species have experienced dramatic changes in their abundance and distribution during recent climate change, but it is often unclear whether such ecological responses are accompanied by evolutionary change. We used targeted exon sequencing of 294 museum specimens (160 historic, 134 modern) to generate independent temporal genomic contrasts spanning a century of climate change (1911-2012) for two co-distributed chipmunk species: an endemic alpine specialist (Tamias alpinus) undergoing severe range contraction and a stable mid-elevation species (T. speciosus). Using a novel analytical approach, we reconstructed the demographic histories of these populations and tested for evidence of recent positive directional selection. Only the retracting species showed substantial population genetic

SUBMITTER: Bi K 

PROVIDER: S-EPMC6519841 | biostudies-literature | 2019 May

REPOSITORIES: biostudies-literature