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The respective roles of hosts and plants in mediating genetic differentiation among bruchid parasitoids
Project responsable Betty Benrey
   
Abstract 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.
   
Keywords parasitoids, genetic differentiation, tritrophic interactions, beans, host plants
   
Type of project Fundamental research project
Research area Ecologie
Method of financing FNS - Encouragement de projets (Div. I-III)
Status Completed
Start of project 1-1-2006
End of project 30-6-2009
Overall budget 216'154.00
Contact Betty Benrey