Last update: : Wednesday 4 November 2015, by
Par : Redouan Bshary, Department of Behavioral Ecology, University of Neuchatel, Switzerland
Date : Jeudi 5 novembre 2015 à 13h30
Lieu : IPHC, Amphithéâtre Grünewald, bâtiment 25
Marine cleaning mutualism: from game theory to endocrinology and cognition Cooperation between unrelated individuals has attracted a lot of research as mutual helping behaviours have to be reconciled with evolutionary theory and its emphasis on egoism. A standard interdisciplinary approach is to use (evolutionary) game theory in order to identify strategies and corresponding partner control mechanisms that promote stable cooperation. We have used and advanced such models to better understand marine cleaning mutualism involving the cleaner wrasse Labroides dimidiatus. In this mutualism, so called ’client’ reef fish visit the cleaners to have ectoparasites removed. Conflict of interest occurs as cleaner prefer the protective client mucus over ectoparasites, where eating the former constitutes cheating. I will introduce the key game theoretic results but then focus on a more mechanistic approach that aims at identifying proximate causes of cleaner wrasse decision-making. More specifically, I will present examples how hormones and cognition affect decisions. I will end with a discussion in how far proximate mechanisms should be integrated into evolutionary game theory.