Reduced genetic diversity, increased isolation and multiple introductions of invasive giant hogweed in the western Swiss Alps.

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State: Public
Version: Final published version
Serval ID
serval:BIB_E4A615D986BE
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Reduced genetic diversity, increased isolation and multiple introductions of invasive giant hogweed in the western Swiss Alps.
Journal
Molecular Ecology
Author(s)
Henry P., Le Lay G., Goudet J., Guisan A., Jahodová S., Besnard G.
ISSN
1365-294X[electronic]
Publication state
Published
Issued date
2009
Peer-reviewed
Oui
Volume
18
Number
13
Pages
2819-2831
Language
english
Abstract
Abstract The giant hogweed (Heracleum mantegazzianum) has successfully invaded 19 European countries as well as parts of North America. It has become a problematic species due to its ability to displace native flora and to cause public health hazards. Applying population genetics to species invasion can help reconstruct invasion history and may promote more efficient management practice. We thus analysed levels of genetic variation and population genetic structure of H. mantegazzianum in an invaded area of the western Swiss Alps as well as in its native range (the Caucasus), using eight nuclear microsatellite loci together with plastid DNA markers and sequences. On both nuclear and plastid genomes, native populations exhibited significantly higher levels of genetic diversity compared to invasive populations, confirming an important founder event during the invasion process. Invasive populations were also significantly more differentiated than native populations. Bayesian clustering analysis identified five clusters in the native range that corresponded to geographically and ecologically separated groups. In the invaded range, 10 clusters occurred. Unlike native populations, invasive clusters were characterized by a mosaic pattern in the landscape, possibly caused by anthropogenic dispersal of the species via roads and direct collection for ornamental purposes. Lastly, our analyses revealed four main divergent groups in the western Swiss Alps, likely as a consequence of multiple independent establishments of H. mantegazzianum.
Keywords
Bayesian Clustering, Heracleum, Invasive Species, Microsatellites, Plastid Dna, Population Genetics - Empirical , Heracleum-Mantegazzianum Apiaceae, Different Spatial Scales, United-States, Population-Structure, Biological Invasion, Plant-Populations, Economic Costs, North-America, Life-History, Evolution
Pubmed
Web of science
Create date
02/06/2009 7:46
Last modification date
20/08/2019 17:08
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