CBI Seminars from 2015/11/09 to 2015/11/15
Monday November 9th
Tuesday November 10th
Clemens CABERNARD
Other seminar
Title : Cellular and molecular mechanisms during asymmetric cell division
11:15
IBCG | Conference room (100 pers.)
Wednesday November 11th
Thursday November 12th
Friday November 13th
Frédéric BOCCARD, Centre de Génétique Moléculaire – Gif sur Yvette
CBI public seminar
Title : Conformation and segregation des chromosomes bactériens
11:00
IBCG | Conference room (100 pers.)
Sylvain TOULET, CRCA, CBI ToulouseHDR/PhD defenseTitle : Self-organized collective movements : individual decision and information transfer
14:00
Friday 13th of November in the Shannon amphitheater in U4
Abstract:
Collective movements often involve very spectacular displays that fascinate nature loversand researchers. How do such amazing patterns appear and how group cohesion can be maintained ? If many studies were carried out to decipher the rules underlying cohesion for groups in movement, there is a lack of works adressing the transitions involved in collective movements : departures and stops. This thesis adresses the behavioural mechanisms involved in the collective decision-making processes occuring in such transitions in Merino sheep (Ovis aries) groups. We propose some new kinds of spatial hypotheses that can account for the way interactions between individuals are locally modulated in large groups where individuals cannot have an access to the global information of all individuals. We developed a novel spatiotemporal model of sheep collective motion that reproduces the experimental observations and allows to explore the outcomes of collective decisions in various conditions. The experimental and theoretical results increase the understanding of the individual mechanisms that produce collective decisions allowing to maintain group cohesion.
Saturday November 14th
Sunday November 15th
