Show simple item record Ewart, Kyle M. Griffin, Andrea S. Johnson, Rebecca N. Kark, Salit Magory Cohen, Tali Lo, Nathan Major, Richard E.
dc.coverage.spatial Australia 2018-11-26T21:50:52Z 2018-11-26T21:50:52Z 2018-11-24
dc.identifier doi:10.5061/dryad.670716m
dc.identifier.citation Ewart KM, Griffin AS, Johnson RN, Kark S, Magory Cohen T, Lo N, Major RE (2019) Two speed invasion: assisted and intrinsic dispersal of common mynas over 150 years of colonization. Journal of Biogeography 46(1): 45-57.
dc.description Aim: Despite the common myna’s widespread distribution, and the significant impact it has caused in parts of its non-native range, there have been no comprehensive genomic studies of its invasion of any region. We aimed to characterize the common myna invasion of the Australian continent to understand its population genetic landscape, introduction history, dispersal characteristics, and the interconnectedness between different source populations and invasive fronts. Location: Common mynas from 26 geographical locations spanning the Australian continent were utilized in this study. Taxon: Common myna (Acridotheres tristis). Methods: We used a reduced genome representation method (DArTseq) to generate thousands of single nucleotide polymorphism markers in 462 common mynas. We then applied population genomic techniques to identify the common myna’s population attributes such as gene flow, genetic diversity and effective dispersal, all of which are critical for understanding geographical range expansion of pest species. Results: We found significant genetic structuring across the common myna’s Australian distribution, indicating limited levels of effective dispersal amongst the populations founded from historic introductions in the 19th century. The historic introduction points were found to be genetically distinct, such that in the region on the invasion front where admixture did occur, myna populations exhibited higher genetic diversity than in the source populations. Significant isolation by distance was evident amongst populations derived from the same founding population, with genetic diversity decreasing moving away from the point of colonization, and in general, higher levels of gene flow from source to front than vice versa. Main conclusions: This study indicates that despite a 150-year colonization history of mynas in Australia, contemporary genetic structure still largely reflects human-mediated dispersal. However, expanding populations are now connecting and the consequent increased genetic diversity may improve evolutionary potential. These results suggest that more management focus should be directed towards the invasion fronts, rather than the large, historic source populations.
dc.relation.haspart doi:10.5061/dryad.670716m/1
dc.relation.isreferencedby doi:10.1111/jbi.13473
dc.subject alien
dc.subject effective dispersal
dc.subject gene flow
dc.subject invasion biology
dc.subject population genomics
dc.subject range expansion
dc.title Data from: Two speed invasion: assisted and intrinsic dispersal of common mynas over 150-years of colonization
dc.type Article
dwc.ScientificName Acridotheres tristis
dc.contributor.correspondingAuthor Ewart, Kyle M.
prism.publicationName Journal of Biogeography
dryad.dansTransferDate 2019-02-19T03:46:56.632+0000
dryad.dansArchiveDate 2019-02-19T05:01:37.026+0000
dryad.dashTransferDate 2019-06-20T20:13:31.559+0000
dryad.dashStoredDate 2019-07-19T19:53:54.616+0000

Files in this package

Content in the Dryad Digital Repository is offered "as is." By downloading files, you agree to the Dryad Terms of Service. To the extent possible under law, the authors have waived all copyright and related or neighboring rights to this data. CC0 (opens a new window) Open Data (opens a new window)

Title SNP data for all common myna samples used in this paper
Downloaded 11 times
Description The SNPs provided by DArT and the associated metadata for all common myna samples used in this paper. Explanations for the metadata can be found in the first tab of the spreadsheet. Note: data in the 'ScoringData_SilicoDArT' tab was not used in this study.
Download OrderAppendix_1_DImy16-2231.xlsx (157.1 Mb)
Details View File Details

Search for data

Be part of Dryad

We encourage organizations to: