VALLEJO-MARÍN, Mario; FRIEDMAN, Jannice; TWYFORD, Alex; LEPAIS, Olivier; ICKERT-BOND, Stefanie; STREISFELD, Matthew; YANT, Levi; VAN KLEUNEN, Mark; ROTTER, Michael; PUZEY, Joshua

doi:10.1038/s42003-021-01795-x

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VALLEJO-MARÍN, Mario
University of Stirling

FRIEDMAN, Jannice
Queen's University [Kingston, Canada]

TWYFORD, Alex
University of Edinburgh [Edin.]
Royal Botanic Garden [Edinburgh]

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Communications Biology. 2021-03-12, vol. 4, n° 1, p. 1-12

Nature Publishing Group

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Imperfect historical records and complex demographic histories present challenges for reconstructing the history of biological invasions. Here, we combine historical records, extensive worldwide and genome-wide sampling, and demographic analyses to investigate the global invasion of Mimulus guttatus from North America to Europe and the Southwest Pacific. By sampling 521 plants from 158 native and introduced populations genotyped at >44,000 loci, we determined that invasive M. guttatus was first likely introduced to the British Isles from the Aleutian Islands (Alaska), followed by admixture from multiple parts of the native range. We hypothesise that populations in the British Isles then served as a bridgehead for vanguard invasions worldwide. Our results emphasise the highly admixed nature of introduced M. guttatus and demonstrate the potential of introduced populations to serve as sources of secondary admixture, producing novel hybrids. Unravelling the history of biological invasions provides a starting point to understand how invasive populations adapt to novel environments.< Leer menos

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Population genomic and historical analysis suggests a global invasion by bridgehead processes in Mimulus guttatus

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