A. K. Sakai, F. W. Allendorf, J. S. Holt, D. M. Lodge, and J. Molofsky, The population biology of invasive species, Annual Review of Ecology and Systematics, vol.32, pp.305-332, 2001.

J. P. Wares, A. R. Hughes, R. K. Grosberg, . Biogeography, M. A. Sunderland et al., Mechanisms that Drive Evolutionary Change: insights from species introductions and invasions, Species Invasions: Insights into Ecology, Evolution, pp.229-257, 2005.

N. C. Ellstrand and K. A. Schierenbeck, Hybridization as a stimulus for the evolution of invasiveness in plants, Proceedings of the National Academy of Sciences of the United States of America, vol.97, pp.7043-7050, 2000.

B. Facon, J. P. Pointier, P. Jarne, V. Sarda, and P. David, High genetic variance in life-history strategies within invasive populations by way of multiple introductions, Current Biology, vol.18, pp.363-367, 2008.
URL : https://hal.archives-ouvertes.fr/halsde-00286443

J. J. Kolbe, R. E. Glor, L. Schettino, A. C. Lara, and A. Larson, Genetic variation increases during biological invasion by a Cuban lizard, Nature, vol.431, pp.177-181, 2004.

M. Ciosi, N. J. Miller, K. S. Kim, R. Giordano, and A. Estoup, Invasion of Europe by the western corn rootworm, Diabrotica virgifera virgifera: multiple transatlantic introductions with various reductions of genetic diversity, Molecular Ecology, vol.17, pp.3614-3627, 2008.
URL : https://hal.archives-ouvertes.fr/hal-02662996

M. T. Cheres, J. F. Miller, J. R. Crane, and S. J. Knapp, Genetic distance as a predictor of heterosis and hybrid performance within and between heterotic groups in sunflower, Theoretical and Applied Genetics, vol.100, pp.889-894, 2000.

B. Facon, P. Jarne, J. P. Pointier, and P. David, Hybridization and invasiveness in the freshwater snail Melanoides tuberculata: hybrid vigour is more important than increase in genetic variance, Journal of Evolutionary Biology, vol.18, pp.524-535, 2005.
URL : https://hal.archives-ouvertes.fr/hal-00104456

J. C. Reif, A. E. Melchinger, X. C. Xia, M. L. Warburton, and D. A. Hoisington, Genetic distance based on simple sequence repeats and heterosis in tropical maize populations, Crop Science, vol.43, pp.1275-1282, 2003.

B. Facon, R. A. Hufbauer, A. Tayeh, A. Loiseau, and E. Lombaert, Inbreeding Depression Is Purged in the Invasive Insect Harmonia axyridis, Current Biology, vol.21, pp.424-427, 2011.
URL : https://hal.archives-ouvertes.fr/hal-02644352

B. Pujol, S. R. Zhou, J. S. Vilas, and J. R. Pannell, Reduced inbreeding depression after species range expansion, Proceedings of the National Academy of Sciences of the United States of America, vol.106, pp.15379-15383, 2009.
URL : https://hal.archives-ouvertes.fr/hal-02349743

N. Miller, A. Estoup, S. Toepfer, D. Bourguet, and L. Lapchin, Multiple transatlantic introductions of the western corn rootworm, Science, vol.310, p.992, 2005.
URL : https://hal.archives-ouvertes.fr/hal-02682039

T. F. Branson and J. L. Krysan, Feeding and oviposition behavior and life cycle strategies of Diabrotica: an evolutionary view with implications for pest management, Environmental Entomology, vol.10, pp.826-831, 1981.

R. F. Smith, Distributional patterns of selected western North American insects: the distribution of diabroticites in western North America, Bulletin of Entomological Society of America, vol.12, pp.108-110, 1966.

J. L. Krysan and R. F. Smith, Systematics of the virgifera species group of Diabrotica (Coleoptera: Chrysomelidae: Galerucinae). Entomography, vol.5, pp.375-484, 1987.

H. C. Chiang, Bionomics of the northern and western corn rootworms, Annual Review of Entomology, vol.18, pp.47-72, 1973.

M. E. Gray, T. W. Sappington, N. J. Miller, J. Moeser, and M. O. Bohn, Adaptation and Invasiveness of Western Corn Rootworm: Intensifying Research on a Worsening Pest, Annual Review of Entomology, vol.54, pp.303-321, 2009.

J. Kiss, C. R. Edwards, H. K. Berger, P. Cate, and M. Cean, Monitoring of western corn rootworm (Diabrotica virgifera virgifera LeConte) in Europe, Ecology and Management, pp.29-39, 1992.

V. De-luigi, L. Furlan, S. Palmieri, M. Vettorazzo, and G. Zanini, Results of WCR monitoring plans and evaluation of an eradication programme using GIS and Indicator Kriging, Journal of Applied Entomology, vol.135, pp.38-46, 2011.

C. R. Edwards and J. Kiss, New WCR 2007 General Spread Map for Europe, 2008.

C. R. Edwards and J. Kiss, New WCR 2008 General Spread Map for, Europe. IWGO Newsletter, vol.29, 2009.

C. R. Edwards and J. Kiss, New WCR 2009 General Spread Map for Europe. IWGO Newsletter 30, 2010.

P. Sunnucks and D. F. Hales, Numerous transposed sequences of mitochondrial cytochrome oxidase I-II in aphids of the genus Sitobion (Hemiptera: Aphididae), Molecular Biology and Evolution, vol.13, pp.510-524, 1996.

K. S. Kim, U. Stolz, N. J. Miller, E. R. Waits, and T. Guillemaud, A core set of microsatellite markers for Western corn rootworm (Coleoptera: Chrysomelidae) population genetics studies, Environ Entomol, vol.37, pp.293-300, 2008.

N. J. Miller, M. Ciosi, T. W. Sappington, S. T. Ratcliffe, and J. L. Spencer, Genome scan of Diabrotica virgifera virgifera for genetic variation associated with crop rotation tolerance, Journal of Applied Entomology, vol.131, pp.378-385, 2007.
URL : https://hal.archives-ouvertes.fr/hal-02657906

K. S. Kim and T. W. Sappington, Polymorphic microsatellite loci from the western corn rootworm (Insecta: Coleoptera: Chrysomelidae) and crossamplification with other Diabrotica spp, Molecular Ecology Notes, vol.5, pp.115-117, 2005.

M. Nei, Molecular Evolutionary Genetics, 1987.

S. Piry, A. Alapetite, J. M. Cornuet, D. Paetkau, and L. Baudouin, GENECLASS2: A software for genetic assignment and first-generation migrant detection, Journal of Heredity, vol.95, pp.536-539, 2004.

M. Raymond and F. Rousset, Genepop (version. 1.2), a population genetics software for exact tests and ecumenicism, Journal of Heredity, vol.86, pp.248-249, 1995.
URL : https://hal.archives-ouvertes.fr/halsde-00186383

F. Rousset, GENEPOP' 007: a complete re-implementation of the GENEPOP software for Windows and Linux, Molecular Ecology Resources, vol.8, pp.103-106, 2008.
URL : https://hal.archives-ouvertes.fr/halsde-00366752

R. J. Petit, A. El-mousadik, and O. Pons, Identifying populations for conservation on the basis of genetic markers, Conservation Biology, vol.12, pp.844-855, 1998.
URL : https://hal.archives-ouvertes.fr/hal-02699275

J. Goudet, FSTAT, a program to estimate and test gene diversities and fixation indices (version 2.9.3). Updated from Goudet, 1995.

R. R. Sokal and F. J. Rolf, Biometry. The Principles and Practice of Statistics in Biological Research, 1995.

B. S. Weir and C. Cockerham, Estimating F-statistics for the analysis of population structure, Evolution, vol.38, pp.1358-1370, 1984.

M. Raymond and F. Rousset, An exact test for population differentiation, Evolution, vol.49, pp.1280-1283, 1995.
URL : https://hal.archives-ouvertes.fr/halsde-00186384

Y. Benjamini and Y. Hochberg, Controlling the False Discovery Ratea Practical and Powerful Approach to Multiple Testing, Journal of the Royal Statistical Society Series B-Methodological, vol.57, pp.289-300, 1995.

J. K. Pritchard, M. Stephens, and P. Donnelly, Inference of population structure using multilocus genotype data, Genetics, vol.155, pp.945-959, 2000.

D. Falush, M. Stephens, and J. K. Pritchard, Inference of population structure using multilocus genotype data: Linked loci and correlated allele frequencies, Genetics, vol.164, pp.1567-1587, 2003.

M. J. Hubisz, D. Falush, M. Stephens, and J. K. Pritchard, Inferring weak population structure with the assistance of sample group information, Molecular Ecology Resources, vol.9, pp.1322-1332, 2009.

G. Evanno, S. Regnaut, and J. Goudet, Detecting the number of clusters of individuals using the software STRUCTURE: a simulation study, Molecular Ecology, vol.14, pp.2611-2620, 2005.

N. A. Rosenberg, DISTRUCT: a program for the graphical display of population structure, Molecular Ecology Notes, vol.4, pp.137-138, 2004.

, SAS. 9.1.3 ed. Cary, NS, USA. pp. Statistical Analysis, 2008.

M. Crawley, GLIM for Ecologists: Blackwell Science, 1993.

M. Choisy, P. Franck, and J. M. Cornuet, Estimating admixture proportions with microsatellites: comparison of methods based on simulated data, Molecular Ecology, vol.13, pp.955-968, 2004.
URL : https://hal.archives-ouvertes.fr/hal-02671823

M. A. Beaumont, W. Y. Zhang, and D. J. Balding, Approximate Bayesian computation in population genetics, Genetics, vol.162, pp.2025-2035, 2002.

J. M. Cornuet, V. Ravigne, and A. Estoup, Inference on population history and model checking using DNA sequence and microsatellite data with the software DIYABC (v1.0), Bmc Bioinformatics, p.11, 2010.
URL : https://hal.archives-ouvertes.fr/hal-02658867

J. M. Cornuet, F. Santos, M. A. Beaumont, C. P. Robert, and J. M. Marin, Inferring population history with DIY ABC: a user-friendly approach to approximate Bayesian computation, Bioinformatics, vol.24, pp.2713-2719, 2008.

A. Estoup, E. Lombaert, J. M. Marin, T. Guillemaud, and P. Pudlo, Estimation of demo-genetic model probabilities with Approximate Bayesian Computation using linear discriminant analysis on summary statistics, Molecular Ecology Resources, vol.12, pp.846-855, 2012.
URL : https://hal.archives-ouvertes.fr/hal-00796906

K. Csillery, M. Blum, O. E. Gaggiotti, and O. Francois, Approximate Bayesian Computation (ABC) in practice, Trends in Ecology & Evolution, vol.25, pp.410-418, 2010.
URL : https://hal.archives-ouvertes.fr/hal-00553810

T. Guillemaud, M. A. Beaumont, M. Ciosi, J. M. Cornuet, and A. Estoup, Inferring introduction routes of invasive species using approximate Bayesian computation on microsatellite data, Heredity, vol.104, pp.88-99, 2010.
URL : https://hal.archives-ouvertes.fr/hal-02659220

E. Lombaert, T. Guillemaud, J. M. Cornuet, T. Malausa, and B. Facon, Bridgehead Effect in the Worldwide Invasion of the, Biocontrol Harlequin Ladybird. PLoS ONE, vol.5, 2010.
URL : https://hal.archives-ouvertes.fr/hal-02618470

A. Estoup, P. Jarne, and J. M. Cornuet, Homoplasy and mutation model at microsatellite loci and their consequences for population genetics analysis, Molecular Ecology, vol.11, pp.1591-1604, 2002.

M. Ciosi, N. J. Miller, S. Toepfer, A. Estoup, and T. Guillemaud, Stratified dispersal and increasing genetic variation during the invasion of Central Europe by the western corn rootworm, Diabrotica virgifera virgifera, Evolutionary Applications, vol.4, pp.54-70, 2011.
URL : https://hal.archives-ouvertes.fr/hal-01218992

P. Baufeld and S. Enzian, Simulations model for spreading scenarios of western corn rootworm (Diabrotica virgifera virgifera) in case of Germany, IWGO Newsletter, vol.22, pp.14-15, 2001.

J. A. Endler, Geographic Variation, Speciation, and Clines. Monographs in population biology, pp.30-96, 1977.

N. H. Barton and K. S. Gale, Hybrid zones and the evolutionary process, pp.13-45, 1993.

L. Gay, P. A. Crochet, D. A. Bell, and T. Lenormand, Comparing Clines on Molecular and Phenotypic Traits in Hybrid Zones: a Window on Tension Zone Models, Evolution, vol.62, pp.2789-2806, 2008.

I. J. Saccheri, F. Rousset, P. C. Watts, P. M. Brakefield, and L. M. Cook, Selection and gene flow on a diminishing cline of melanic peppered moths, Proceedings of the National Academy of Sciences of the United States of America, vol.105, pp.16212-16217, 2008.
URL : https://hal.archives-ouvertes.fr/halsde-00342784

O. Bossdorf, H. Auge, L. Lafuma, W. E. Rogers, and E. Siemann, Phenotypic and genetic differentiation between native and introduced plant populations, Oecologia, vol.144, pp.1-11, 2005.

J. Roman and J. A. Darling, Paradox lost: genetic diversity and the success of aquatic invasions, Trends in Ecology & Evolution, vol.22, pp.454-464, 2007.

J. Roman, Diluting the founder effect: cryptic invasions expand a marine invader's range, Proceedings of the Royal Society B-Biological Sciences, vol.273, pp.2453-2459, 2006.

A. Rieux, F. Halkett, L. D. De-bellaire, M. F. Zapater, and F. Rousset, Inferences on pathogenic fungus population structures from microsatellite data: new insights from spatial genetics approaches, Molecular Ecology, vol.20, pp.1661-1674, 2011.
URL : https://hal.archives-ouvertes.fr/hal-02651924

E. Lombaert, T. Guillemaud, C. E. Thomas, L. Handley, and J. Li, Inferring the origin of populations introduced from a genetically structured native range by approximate Bayesian computation: case study of the invasive ladybird Harmonia axyridis, Molecular Ecology, vol.20, pp.4654-4670, 2011.
URL : https://hal.archives-ouvertes.fr/hal-02643512

N. H. Barton and G. M. Hewitt, Analysis of Hybrid Zones, Annual Review of Ecology and Systematics, vol.16, pp.113-148, 1985.

J. Mallet and N. Barton, Inference From Clines Stabilized by Frequency-Dependent Selection, Genetics, vol.122, pp.967-976, 1989.

M. Slatkin, Gene flow and selection in a cline, Genetics, vol.75, pp.733-756, 1973.

J. Turgeon, A. Tayeh, B. Facon, E. Lombaert, D. Clercq et al., Experimental evidence for the phenotypic impact of admixture between wild and biocontrol Asian ladybird (Harmonia axyridis) involved in the European invasion, Journal of Evolutionary Biology, vol.24, pp.1044-1052, 2011.
URL : https://hal.archives-ouvertes.fr/hal-02647701

S. R. Keller and D. R. Taylor, Genomic admixture increases fitness during a biological invasion, Journal of Evolutionary Biology, vol.23, pp.1720-1731, 2010.