Welcome to the CEFE

The CEFE is currently the largest French research center in Ecology and Evolutionary Ecology. Our Mission: perform independent, fundamental scientific research on the dynamics of biodiversity, planetary environmental change, and sustainable development. The links between society and ecology is a theme of increasing importance in oour research.

If you are interested in who does what on a specific theme or topic at CEFE, please go to the WHO DOES WHAT tab and use the proposed tags. You will have direct access to the pages of the persons listed for a given tag.

If you are interested in what the different research Departments at cefe do and the focus of their respective teams, please go to the RESEARCH tab and navigate the Departments and their teams.

Seminars of ecology and evolution of Montpellier

  • Meredith Cenzer

    7 mai 2021, 16h00 (diffusion en visioconférence). Maladaptation in a changing world

  • Sutirth Dey

    16 avril 2021, 11h30 (diffusion en visioconférence). Size matters: Population size and adaptation in bacteria.

Sutirth Dey

16 avril 2021, 11h30 (diffusion en visioconférence).

Size matters: Population size and adaptation in bacteria.

sdSutirth Dey

Link to seminar: https://umontpellier-fr.zoom.us/webinar/register/WN_qM3pZuf8TKOm2GhcctXcew

Indian Institute of Science Education and Research, Pune, India



Population size is known to be a major determinant of evolutionary outcomes in microbes. In general, larger microbial populations adapt faster and better to their environments. However, is there a cost to evolving in larger population sizes? We addressed this question by experimentally evolving E. coli laboratory populations of different sizes under various conditions. We found that adapting in larger sizes typically leads to fitness costs under constant environments, but not under fluctuating ones. We then used numerical simulations and genome sequencing to investigate various aspects of this issue.

Recent publications:         

Chavhan, Y. D., Malusare, S. and Dey, S., 2020. Larger bacterial populations evolve heavier fitness trade-offs and undergo greater ecological specialization. Heredity 124, 726-736.

Chavhan, Y. D.,  Karve, S. M., and Dey, S. 2019. Adapting in larger numbers can increase the vulnerability of Escherichia coli populations to environmental changes. Evolution 73, 836-846.