Evolutionary dynamics of populations : nonlocal PDEs and Free boundary approaches

Nom de l'orateur
Jimmy Garnier
Etablissement de l'orateur
LAMA, Université de Savoie
Date et heure de l'exposé
Lieu de l'exposé
salle des séminaires

In this talk I will present some result about evolutionary dynamics of populations using nonlocal PDEs and free boundary model. I will first focus on the evolution of sexual or asexual population facing environmental change. Starting with a Individual based model, we obtain an analytical description of this microscopic model using nonlocal partial differential equations. In a special regime of "small mutation", we are able to approximate analytically the behavior of the microscopic model and we deduce qualitative as well as quantitative effect of the environmental change on the evolutionary dynamics of the population. In a second part, I discuss the problem of speed of adaptation of a population when beneficial mutation always occurs. We use a free boundary problem to describe the adaptation of a population to a new environment and we compare our results with the Wright-Fisher micrsocopic model.