The thesis defense of Ph.D. candidate Simon Payette Daoust, supervised by Jacques Brodeur, will take place on December 12, 2011 at 2 p.m. in the conference room (B-104) of the Université de Montréal Biodiversity Centre. The title of his thesis is “Impacts de l’intensification agricole et de la structure du paysage sur les relations tri-trophiques entre un oiseau hôte, des mouches ectoparasites et leurs parasitoides”.