Last update: : Wednesday 3 May 2017, by
Par : Benjamin Rey, Univ Lyon 1
Date : jeudi 4 mai 2017 de 16h à 17h30
Lieu : CNRS, Amphithéâtre Marguerite Perey, Bat. 1
Understanding the mechanisms at the origin of the diversity of life history strategies is one of the greatest challenges of contemporary evolutionary ecology and ecophysiology. In social species, theoretical and empirical evidences suggest that the social environment has preeminent impact on life history traits and ultimately shapes individual performance. The proximal mechanisms underlying the relationship between sociality and fitness remains uncertain, however.
In this talk, I will share some of our recent findings on the Alpine marmot, a cooperative breeder showing a complex social organization. These findings result from a long‐term monitoring of marmots initiated in La Grande Sassière Nature Reserve in 1990 and provide a fine description of how the social environment affects life history trajectories and population dynamic in this species. More recently, we investigated, at individual and populational levels, how social factors affect endocrine functions and red/ox homeostasis. Taking advantage of these physiological considerations may help in shedding some light on our understanding of the evolution of sociality.