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Title of Journal: Biol Invasions

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Abbravation: Biological Invasions

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Springer Netherlands

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ISSN

1573-1464

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Distinct invasion sources of common ragweed Empha

Authors: Pierre Gladieux Tatiana Giraud Levente Kiss Benjamin J Genton Odile Jonot Jacqui A Shykoff
Publish Date: 2010/10/02
Volume: 13, Issue: 4, Pages: 933-944
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Abstract

The common ragweed Ambrosia artemisiifolia L Asteraceae is a North American native that is invading Eurasia Besides its economic impact on crop yield it presents a major health problem because of its highly allergenic pollen The plant was imported inadvertently to Europe in the eighteenth century and has become invasive in several countries By analyzing French and North American populations it was previously shown that French populations were best described as a mixture of native sources and that range expansion in France probably involved sequential bottlenecks Here our aim was to determine whether Eastern European populations of A artemisiifolia originated from the previously established French populations or from independent transAtlantic colonization events We used nuclear microsatellite markers to elucidate the relationships among populations from Eastern and Western Europe in relation to populations from a broad survey across the native North American range We found that A artemisiifolia from Eastern Europe did not originate from the earlier established French populations but rather represents multiple independent introductions from other sources or introductions from a not yet identified highly diverse native population Eastern European populations show comparable amounts of genetic variability as do previously characterized French and North American populations but analyses of population structure clearly distinguish the two European groups This suggests separate introductions in Eastern and Western Europe as well as divergent sources for these two invasions possibly as a result of distinct rules for trade and exchange for Eastern Europe during most of the twentieth centuryWe are grateful to Tünde Jankovics and Vera Hayova for their help in collecting ragweed samples to Bernard Clot from MeteoSwiss and we thank anonymous reviewers for their suggestions TG acknowledges a grant ANR 07BDIV003 and LK an Invited Professorship from University ParisSud A part of this work was supported by grants of the Hungarian Scientific Research Fund OTKA T046841 and IN67377

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  3. Molecular and morphological insights into the origin of the invasive greater white-toothed shrew ( Crocidura russula ) in Ireland
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  7. Tracking the expansion of the American mink ( Neovison vison) range in NW Portugal
  8. Interactions between invasive and native crustaceans: differential functional responses of intraguild predators towards juvenile hetero-specifics
  9. The invasive Australian redback spider, Latrodectus hasseltii Thorell 1870 (Araneae: Theridiidae): current and potential distributions, and likely impacts
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  11. Soil type, microsite, and herbivory influence growth and survival of Schinus molle (Peruvian pepper tree) invading semi-arid African savanna
  12. Geographic range and structure of cryptic genetic diversity among Pacific North American populations of the non-native amphipod Grandidierella japonica
  13. Non-linear effects of invasive lionfish density on native coral-reef fish communities
  14. A predatory land snail invades central-western Argentina
  15. Use of niche models in invasive species risk assessments
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  20. Alien plant invasions in tropical and sub-tropical savannas: patterns, processes and prospects
  21. Last Chance to Know? Using Literature to Explore the Biogeography and Invasion Biology of the Death Cap Mushroom Amanita phalloides (Vaill. ex Fr. :Fr.) Link
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  25. Non-native grass invasion alters native plant composition in experimental communities
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  28. Priority invasive alien plants in the Tuscan Archipelago (Italy): comparing the EPPO prioritization scheme with the Australian WRA
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  39. Herbert H. T. Prins and Iain J. Gordon (eds.): Invasion biology and ecological theory. Insights from a continent in transformation
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