Abbott R. auteur aut IRD Albach D. auteur aut IRD Ansell S. auteur aut IRD Arntzen J. W. auteur aut IRD Baird S. J. E. auteur aut IRD Bierne N. auteur aut IRD Boughman J. auteur aut IRD Brelsford A. auteur aut IRD Buerkle C. A. auteur aut IRD Buggs R. auteur aut IRD Butlin R. K. auteur aut IRD Dieckmann U. auteur aut IRD Eroukhmanoff F. auteur aut IRD Grill A. auteur aut IRD Cahan S. H. auteur aut IRD Hermansen J. S. auteur aut IRD Hewitt G. auteur aut IRD Hudson A. G. auteur aut IRD Jiggins C. auteur aut IRD Jones J. auteur aut IRD Keller B. auteur aut IRD Marczewski T. auteur aut IRD Mallet Julien auteur aut IRD Martinez-Rodriguez P. auteur aut IRD Most M. auteur aut IRD Mullen S. auteur aut IRD Nichols R. auteur aut IRD Nolte A. W. auteur aut IRD Parisod C. auteur aut IRD Pfennig K. auteur aut IRD Rice A. M. auteur aut IRD Ritchie M. G. auteur aut IRD Seifert B. auteur aut IRD Smadja C. M. auteur aut IRD Stelkens R. auteur aut IRD Szymura J. M. auteur aut IRD Vainola R. auteur aut IRD Wolf J. B. W. auteur aut IRD Zinner D. auteur aut IRD text journalArticle eng text/pdf born digital access Hybridization has many and varied impacts on the process of speciation. Hybridization may slow or reverse differentiation by allowing gene flow and recombination. It may accelerate speciation via adaptive introgression or cause near-instantaneous speciation by allopolyploidization. It may have multiple effects at different stages and in different spatial contexts within a single speciation event. We offer a perspective on the context and evolutionary significance of hybridization during speciation, highlighting issues of current interest and debate. In secondary contact zones, it is uncertain if barriers to gene flow will be strengthened or broken down due to recombination and gene flow. Theory and empirical evidence suggest the latter is more likely, except within and around strongly selected genomic regions. Hybridization may contribute to speciation through the formation of new hybrid taxa, whereas introgression of a few loci may promote adaptive divergence and so facilitate speciation. Gene regulatory networks, epigenetic effects and the evolution of selfish genetic material in the genome suggest that the Dobzhansky-Muller model of hybrid incompatibilities requires a broader interpretation. Finally, although the incidence of reinforcement remains uncertain, this and other interactions in areas of sympatry may have knock-on effects on speciation both within and outside regions of hybridization. specialized hybrid species hybrid zone incompatibility introgression reinforcement reproductive barrier 020 082 26 2 229-246 2013 1010-061X https://www.documentation.ird.fr/hor/fdi:010058953 10.1111/j.1420-9101.2012.02599.x 1010-061X [F B010058953] https://www.documentation.ird.fr/hor/fdi:010058953 https://www.documentation.ird.fr/intranet/publi/2013/02/010058953.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2013-03-06 2017-08-23 fdi:010058953 fre