Skip to Main content Skip to Navigation
Journal articles

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

Abstract : 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.
Document type :
Journal articles
Complete list of metadata

https://hal.inrae.fr/hal-03310344
Contributor : Marion Desailly <>
Submitted on : Friday, July 30, 2021 - 1:42:17 PM
Last modification on : Saturday, July 31, 2021 - 3:56:20 AM

File

2021-Vallejo-Marín-CB.pdf
Publisher files allowed on an open archive

Licence


Distributed under a Creative Commons Attribution 4.0 International License

Identifiers

Collections

Citation

Mario Vallejo-Marín, Jannice Friedman, Alex Twyford, Olivier Lepais, Stefanie Ickert-Bond, et al.. Population genomic and historical analysis suggests a global invasion by bridgehead processes in Mimulus guttatus. Communications Biology, Nature Publishing Group, 2021, 4 (1), pp.1-12. ⟨10.1038/s42003-021-01795-x⟩. ⟨hal-03310344⟩

Share

Metrics

Record views

29

Files downloads

23