DPG Phi
Verhandlungen
Verhandlungen
DPG

Berlin 2018 – scientific programme

Parts | Days | Selection | Search | Updates | Downloads | Help

DY: Fachverband Dynamik und Statistische Physik

DY 63: Statistical Physics of Biological Systems II (joint session BP/DY)

DY 63.2: Talk

Thursday, March 15, 2018, 15:15–15:30, H 2013

Intermittent collective behavior in small groups of gregarious animals — •Luis A. Gómez1, Richard Bon2, and Fernando Peruani11Laboratoire J. A. Dieudonné, Université Côte d’Azur, Nice, France — 2Centre de Recherches sur la Cognition Animale, Université Paul Sabatier, Toulouse, France

Collective behavior of small groups of gregarious animals is our subject of interest. Experiments with small groups of merino sheep showed interesting features like periodicity of moving and resting phases, synchronization of these phases at the individual level, collective stick–slip dynamics and cohesivity of the group around the center of mass. We show some experimental evidence obtained from the tracking of individual sheep that suggests that the no motion phase of the individuals is qualitatively different to the motion phase. In particular, we discover that a refractory period can be associated to the no motion phase. We propose the introduction of a 3-state model in order to describe the experimental observations for several group sizes (2, 3, 4 and 8 individuals) and study the temporal evolution. Although the model is proposed at the individual level, repercussions at the collective level emerge.

100% | Mobile Layout | Deutsche Version | Contact/Imprint/Privacy
DPG-Physik > DPG-Verhandlungen > 2018 > Berlin