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Evidence for adaptive divergence of thermal responses among B emisia tabaci populations from tropical C olombia following a recent invasion
Author(s) -
Díaz F.,
MuñozValencia V.,
JuvinaoQuintero D. L.,
ManzanoMartínez M. R.,
ToroPerea N.,
CárdenasHenao H.,
Hoffmann A. A.
Publication year - 2014
Publication title -
journal of evolutionary biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.289
H-Index - 128
eISSN - 1420-9101
pISSN - 1010-061X
DOI - 10.1111/jeb.12387
Subject(s) - biology , divergence (linguistics) , ecology , tropics , invasive species , adaptive evolution , evolutionary biology , genetics , philosophy , linguistics , gene
There is an increasing evidence that populations of ectotherms can diverge genetically in response to different climatic conditions, both within their native range and (in the case of invasive species) in their new range. Here, we test for such divergence in invasive whitefly B emisia tabaci populations in tropical Colombia, by considering heritable variation within and between populations in survival and fecundity under temperature stress, and by comparing population differences with patterns established from putatively neutral microsatellite markers. We detected significant differences among populations linked to mean temperature (for survival) and temperature variation (for fecundity) in local environments. A Q ST − F ST analysis indicated that phenotypic divergence was often larger than neutral expectations ( Q ST > F ST ). Particularly, for survival after a sublethal heat shock, this divergence remained linked to the local mean temperature after controlling for neutral divergence. These findings point to rapid adaptation in invasive whitefly likely to contribute to its success as a pest species. Ongoing evolutionary divergence also provides challenges in predicting the likely impact of B emisia in invaded regions.