Document Detail

Fine-scale local adaptation in an invasive freshwater fish has evolved in contemporary time.
MedLine Citation:
PMID:  23193126     Owner:  NLM     Status:  MEDLINE    
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 with local adaptation (p < 0.001). Patterns in growth were less clear, though we detected evidence of location- and population-level effects. Although the agents of divergent ecological selection are not known in this system, our results combine to indicate that adaptive divergence--reflected by higher relative survival of local individuals--can occur in a small number of generations and only a few kilometres apart on the landscape.
Peter A H Westley; Eric J Ward; Ian A Fleming
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Proceedings. Biological sciences / The Royal Society     Volume:  280     ISSN:  1471-2954     ISO Abbreviation:  Proc. Biol. Sci.     Publication Date:  2013 Jan 
Date Detail:
Created Date:  2012-11-29     Completed Date:  2013-05-06     Revised Date:  2014-01-23    
Medline Journal Info:
Nlm Unique ID:  101245157     Medline TA:  Proc Biol Sci     Country:  England    
Other Details:
Languages:  eng     Pagination:  20122327     Citation Subset:  IM    
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MeSH Terms
Adaptation, Biological / genetics*
Analysis of Variance
Bayes Theorem
Biological Evolution*
Crosses, Genetic
Fresh Water
Introduced Species*
Newfoundland and Labrador
Odds Ratio
Selection, Genetic*
Survival Analysis
Trout / genetics,  growth & development*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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