Collective Predation and Escape Strategies
Authored by Luca Angelani
Date Published: 2012
DOI: 10.1103/physrevlett.109.118104
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Abstract
The phenomenon of collective predation is analyzed by using a simple
individual-based model reproducing spatial animal movements. Two groups
of self-propelled organisms are simulated by using Vicseklike models
including steric intragroup repulsion. Chase and escape are described by
intergroups interactions, attraction (for predators) or repulsion (for
preys) from nearest particles of the opposite group. The quantitative
analysis of some relevant quantities (total catch time, lifetime
distribution, predation rate) allows us to characterize many aspects of
the predation phenomenon and gives insights into the study of efficient
escape strategies. The reported findings could be of relevance for many
basic and applied disciplines, from statistical physics, to ecology, and
robotics.
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