Ongoing Ecological Speciation in Cotesia Sesamiae, a Biological Control Agent of Cereal Stem Borers
Evolutionary Applications Evolutionary Applications ISSN 1752-4571 ORIGINAL ARTICLE Ongoing ecological speciation in Cotesia sesamiae,a biological control agent of cereal stem borers Laure Kaiser,1,2 Bruno Pierre Le Ru,1,3 Ferial Kaoula,1 Corentin Paillusson,4 Claire Capdevielle-Dulac,1 Julius Ochieng Obonyo,3 Elisabeth A. Herniou,4 Severine Jancek,4 Antoine Branca,1,5 Paul-Andre Calatayud,1,3 Jean-Francßois Silvain1 and Stephane Dupas1 1 Laboratoire Evolution, Genomes, Comportement et Ecologie, UMR CNRS-Univ. Paris-Sud-IRD, Univ. Paris-Saclay, Gif-sur-Yvette Cedex, France 2 INRA, UMR 1392, Institut d’Ecologie et des Sciences de l’Environnement de Paris, Paris, France 3 icipe: African Insect Science for Food and Health, Nairobi, Kenya 4 Institut de Recherche sur la Biologie de l’Insecte, CNRS UMR 7261, Universite Francßois-Rabelais, UFR Sciences et Techniques, Tours, France 5 Ecologie, Systematique et Evolution, UMR – 8079 UPS-CNRS-AgroParisTech, Univ. Paris-Sud, Orsay Cedex, France Keywords Abstract adaptation, Africa, cryptic species, ecological niche, evolution, geographic distribution, host To develop efficient and safe biological control, we need to reliably identify natu- range, Hymenoptera, parasitic wasp, ral enemy species, determine their host range, and understand the mechanisms phylogeny, reproductive isolation, virulence. that drive host range evolution. We investigated these points in Cotesia sesamiae, an African parasitic wasp of cereal stem borers. Phylogenetic analyses of 74 indi- Correspondence vidual wasps, based on six mitochondrial and nuclear genes, revealed three lin- Laure Kaiser, Laboratoire Evolution, Genomes, eages. We then investigated the ecological status (host plant and host insect Comportement et Ecologie (UMR CNRS-Univ.
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