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The respective roles of hosts and plants in mediating genetic differentiation among bruchid parasitoids
Responsable du projet Betty Benrey
   
Résumé This project explores the respective roles of host (bruchid) species and plant species on the genetic segregation of Horismenus parasitoids and how such segregation may lead to race formation and even speciation. The proposed research is divided into two projects. The first project investigates the role of the bean species and variation within bean species, wild and cultivated, in affecting the population structure of the three Horismenus parasitoids. The second project is aimed to determine the phylogeographies of all trophic levels involved and will look for correlates that reveal the driving forces in determining population structure of the parasitoids. The two projects are expected to provide the key evidence for a primary role of the bean species in mediating host race formation in H. butcheri and determine the relative importance of the bruchid hosts in the population structure of all three parasitoid species.
   
Mots-clés parasitoids, genetic differentiation, tritrophic interactions, beans, host plants
   
Type de projet Recherche fondamentale
Domaine de recherche Ecologie
Source de financement FNS - Encouragement de projets (Div. I-III)
Etat Terminé
Début de projet 1-1-2006
Fin du projet 30-6-2009
Budget alloué 216'154.00
Contact Betty Benrey