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dc.contributor.authorThompson, Genevieve
dc.contributor.authorBellstedt, Dirk
dc.contributor.authorByrne, Margaret
dc.contributor.authorMillar, Mellisa
dc.contributor.authorRichardson, Dave
dc.contributor.authorWilson, John
dc.contributor.authorLe Roux, Johannes
dc.date.accessioned2012-12-10T10:54:45Z
dc.date.available2012-12-10T10:54:45Z
dc.date.issued2012
dc.identifier.citationThompson, G.D., Bellstedt, D.U., Byrne, M., Millar, M.A., Richardson, D.M., Wilson, J.R.U. and Le Roux, J.J. (2012) Cultivation shapes genetic novelty in a globally important invader. Molecular Ecology, 21, 3187-3199.en
dc.identifier.issn1365-294Xen
dc.identifier.urihttp://hdl.handle.net/123456789/1162
dc.description.abstractAcacia saligna is a species complex that has become invasive in a number of countries worldwide where it has caused substantial environmental and economic impacts. Understanding genetic and other factors contributing to its success may allow managers to limit future invasions of closely related species. We used three molecular markers to compare the introduced range (South Africa) to the native range (Western Australia). Nuclear markers showed that invasive populations are divergent from native populations and most closely related to a cultivated population in Western Australia. We also found incongruence between nuclear and chloroplast data that, together with the long history of cultivation of the species, suggest that introgressive hybridization (coupled with chloroplast capture) may have occurred within A. saligna. While we could not definitively prove introgression, the genetic distance between cultivated and native A. saligna populations was comparable to known interspecific divergences among other Acacia species. Therefore, cultivation, multiple large-scale introductions and possibly introgressive hybridization have rapidly given rise to the divergent genetic entity present in South Africa. This may explain the known global variation in invasiveness and inaccuracy of native bioclimatic models in predicting potential distributions.en
dc.description.sponsorshipCenter for Invasion Biology, Working for Wateren
dc.format.extent691766 bytes
dc.format.mimetypeapplication/pdf
dc.language.isoenen
dc.subjectacacia salignaen
dc.subjectgeneticsen
dc.subjectintrogressionen
dc.subjectcultivationen
dc.titleCultivation shapes genetic novelty in a globally important invader.en
dc.typeJournalArticlesen
dc.cibjournalMolecular Ecologyen
dc.cibprojectSHORT-TERM RESEARCHen


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