Please use this identifier to cite or link to this item: http://hdl.handle.net/1893/22339
Appears in Collections:Biological and Environmental Sciences Journal Articles
Title: Genomics of invasion: Diversity and selection in introduced populations of monkeyflowers (Mimulus guttatus)
Authors: Puzey, Joshua R
Vallejo-Marin, Mario
Contact Email: mario.vallejo@stir.ac.uk
Keywords: anthropogenic dispersal
genome scan
introduced species
long-distance colonization
next-generation sequencing
selective sweeps
Issue Date: Sep-2014
Publisher: Wiley-Blackwell
Citation: Puzey JR & Vallejo-Marin M (2014) Genomics of invasion: Diversity and selection in introduced populations of monkeyflowers (Mimulus guttatus), Molecular Ecology, 23 (18), pp. 4472-4485.
Abstract: Global trade and travel is irreversibly changing the distribution of species around the world. Because introduced species experience drastic demographic events during colonization and often face novel environmental challenges from their native range, introduced populations may undergo rapid evolutionary change. Genomic studies provide the opportunity to investigate the extent to which demographic, historical and selective processes shape the genomic structure of introduced populations by analysing the signature that these processes leave on genomic variation. Here, we use next-generation sequencing to compare genome-wide relationships and patterns of diversity in native and introduced populations of the yellow monkeyflower (Mimulus guttatus). Genome resequencing data from 10 introduced populations from the United Kingdom (UK) and 12 native M.guttatus populations in North America (NA) demonstrated reduced neutral genetic diversity in the introduced range and showed that UK populations are derived from a geographic region around the North Pacific. A selective-sweep analysis revealed site frequency changes consistent with selection on five of 14 chromosomes, with genes in these regions showing reduced silent site diversity. While the target of selection is unknown, genes associated with flowering time and biotic and abiotic stresses were located within the swept regions. The future identification of the specific source of origin of introduced UK populations will help determining whether the observed selective sweeps can be traced to unsampled native populations or occurred since dispersal across the Atlantic. Our study demonstrates the general potential of genome-wide analyses to uncover a range of evolutionary processes affecting invasive populations.
Type: Journal Article
URI: http://hdl.handle.net/1893/22339
DOI Link: http://dx.doi.org/10.1111/mec.12875
Rights: This is the peer reviewed version of the following article: Puzey, J. and Vallejo-Marín, M. (2014), Genomics of invasion: diversity and selection in introduced populations of monkeyflowers (Mimulus guttatus). Molecular Ecology, 23: 4472–4485. doi: 10.1111/mec.12875, which has been published in final form at http://onlinelibrary.wiley.com/doi/10.1111/mec.12875/abstract. This article may be used for non-commercial purposes in accordance With Wiley Terms and Conditions for selfarchiving
Affiliation: College of William and Mary
Biological and Environmental Sciences

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