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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Retracing the routes of introduction of invasive species: The case of the Sirex noctilio woodwasp
Molecular Ecology, Volume 21, No. 23, Year 2012
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Description
Understanding the evolutionary histories of invasive species is critical to adopt appropriate management strategies, but this process can be exceedingly complex to unravel. As illustrated in this study of the worldwide invasion of the woodwasp Sirex noctilio, population genetic analyses using coalescent-based scenario testing together with Bayesian clustering and historical records provide opportunities to address this problem. The pest spread from its native Eurasian range to the Southern Hemisphere in the 1900s and recently to Northern America, where it poses economic and potentially ecological threats to planted and native Pinus spp. To investigate the origins and pathways of invasion, samples from five continents were analysed using microsatellite and sequence data. The results of clustering analysis and scenario testing suggest that the invasion history is much more complex than previously believed, with most of the populations being admixtures resulting from independent introductions from Europe and subsequent spread among the invaded areas. Clustering analyses revealed two major source gene pools, one of which the scenario testing suggests is an as yet unsampled source. Results also shed light on the microevolutionary processes occurring during introductions, and showed that only few specimens gave rise to some of the populations. Analyses of microsatellites using clustering and scenario testing considered against historical data drastically altered our understanding of the invasion history of S. noctilio and will have important implications for the strategies employed to fight its spread. This study illustrates the value of combining clustering and ABC methods in a comprehensive framework to dissect the complex patterns of spread of global invaders. © 2012 Blackwell Publishing Ltd.
Authors & Co-Authors
Boissin, Émilie
South Africa, Pretoria
University of Pretoria
Hurley, B. P.
South Africa, Pretoria
University of Pretoria
Wingfield, Michael J.
South Africa, Pretoria
University of Pretoria
Vasaitis, Rimvis
Sweden, Uppsala
Sveriges Lantbruksuniversitet
Stenlid, Jan
Sweden, Uppsala
Sveriges Lantbruksuniversitet
Davis, C.
Canada, Sault Ste Marie
Great Lakes Forestry Centre
De Groot, Peter
Canada, Sault Ste Marie
Great Lakes Forestry Centre
Ahumada, Rodrigo
Chile, Concepcion
Bioforest S.a., Chile
Carnegie, Angus J.
Australia, Orange
Nsw Department of Primary Industries
Goldarazena, Arturo
Spain, Derio
Neiker, Basque Institute for Agricultural Research and Development
Klasmer, Paula
Argentina, Buenos Aires
Instituto Nacional de Tecnología Agropecuaria Buenos Aires
Wermelinger, Beat
Switzerland, Birmensdorf
Eidgenössische Forschungsanstalt Für Wald, Schnee Und Landschaft Wsl
Slippers, Bernard
South Africa, Pretoria
University of Pretoria
Statistics
Citations: 106
Authors: 13
Affiliations: 8
Identifiers
Doi:
10.1111/mec.12065
ISSN:
09621083
e-ISSN:
1365294X
Research Areas
Genetics And Genomics
Study Design
Cross Sectional Study