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- W2158441719 endingPage "e13810" @default.
- W2158441719 startingPage "e13810" @default.
- W2158441719 abstract "Background Past and current range or spatial expansions have important consequences on population genetic structure. Habitat-use expansion, i.e. changing habitat associations, may also influence genetic population parameters, but has been less studied. Here we examined the genetic population structure of a Palaeartic woodland butterfly Pararge aegeria (Nymphalidae) which has recently colonized agricultural landscapes in NW-Europe. Butterflies from woodland and agricultural landscapes differ in several phenotypic traits (including morphology, behavior and life history). We investigated whether phenotypic divergence is accompanied by genetic divergence between populations of different landscapes along a 700 km latitudinal gradient. Methodology/Principal Findings Populations (23) along the latitudinal gradient in both landscape types were analyzed using microsatellite and allozyme markers. A general decrease in genetic diversity with latitude was detected, likely due to post-glacial colonization effects. Contrary to expectations, agricultural landscapes were not less diverse and no significant bottlenecks were detected. Nonetheless, a genetic signature of recent colonization is reflected in the absence of clinal genetic differentiation within the agricultural landscape, significantly lower gene flow between agricultural populations (3.494) than between woodland populations (4.183), and significantly higher genetic differentiation between agricultural (0.050) than woodland (0.034) pairwise comparisons, likely due to multiple founder events. Globally, the genetic data suggest multiple long distance dispersal/colonization events and subsequent high intra- and inter-landscape gene flow in this species. Phosphoglucomutase deviated from other enzymes and microsatellite markers, and hence may be under selection along the latitudinal gradient but not between landscape types. Phenotypic divergence was greater than genetic divergence, indicating directional selection on some flight morphology traits. Main Conclusions/Significance Clinal differentiation characterizes the population structure within the original woodland habitat. Genetic signatures of recent habitat expansion remain, notwithstanding high gene flow. After differentiation through drift was excluded, both latitude and landscape were significant factors inducing spatially variable phenotypic variation." @default.
- W2158441719 created "2016-06-24" @default.
- W2158441719 creator A5000955669 @default.
- W2158441719 creator A5028666470 @default.
- W2158441719 date "2010-11-03" @default.
- W2158441719 modified "2023-10-16" @default.
- W2158441719 title "Population Genetic Differences along a Latitudinal Cline between Original and Recently Colonized Habitat in a Butterfly" @default.
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- W2158441719 doi "https://doi.org/10.1371/journal.pone.0013810" @default.
- W2158441719 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/2972211" @default.
- W2158441719 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/21072197" @default.
- W2158441719 hasPublicationYear "2010" @default.
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