Gene expression clines reveal local adaptation and associated trade-offs at a continental scale.

ABSTRACT: Local adaptation, where fitness in one environment comes at a cost in another, should lead to spatial variation in trade-offs between life history traits and may be critical for population persistence. Recent studies have sought genomic signals of local adaptation, but often have been limited to laboratory populations representing two environmentally different locations of a species' distribution. We measured gene expression, as a proxy for fitness, in males of Drosophila subobscura, occupying a 20° latitudinal and 11 °C thermal range. Uniquely, we sampled six populations and studied both common garden and semi-natural responses to identify signals of local adaptation. We found contrasting patterns of investment: transcripts with expression positively correlated to latitude were enriched f

SUBMITTER: Porcelli D 

PROVIDER: S-EPMC5013434 | biostudies-literature | 2016 Sep

REPOSITORIES: biostudies-literature