Fine-scale local adaptation in an invasive freshwater fish has evolved in contemporary time.

ABSTRACT: Adaptive evolutionary change in only a few generations can increase the ability of non-native invasive species to spread, and yet adaptive divergence is rarely assessed in recently established populations. In this study, we experimentally test for evidence of fine-scale local adaptation in juvenile survival and growth among three populations of an invasive freshwater fish with reciprocal transplants and common-garden experiments. Despite intrinsic differences in habitat quality, in two of three populations we detected evidence of increased survival in 'home' versus 'away' environments with a Bayesian occupancy model fitted to mark-recapture data. We found support for the 'local' versus 'foreign' criterion of local adaptation as 14 of 15 pairwise comparisons of performance were consistent w

SUBMITTER: Westley PA 

PROVIDER: S-EPMC3574406 | biostudies-literature | 2013 Jan

REPOSITORIES: biostudies-literature