Few genetic and environmental correlations between life history and stress resistance traits affect adaptation to fluctuating thermal regimes.

ABSTRACT: Laboratory selection in thermal regimes that differed in the amplitude and the predictability of daily fluctuations had a marked effect on stress resistance and life history traits in Drosophila simulans. The observed evolutionary changes are expected to be the result of both direct and correlated responses to selection. Thus, a given trait might not evolve independently from other traits because of genetic correlations among these traits. Moreover, different test environments can induce novel genetic correlations because of the activation of environmentally dependent genes. To test whether and how genetic correlations among stress resistance and life history traits constrain evolutionary adaptation, we used three populations of D. simulans selected for 20 generations in constant, predicta

SUBMITTER: Manenti T 

PROVIDER: S-EPMC4981681 | biostudies-literature | 2016 Sep

REPOSITORIES: biostudies-literature