Individual-based models have shown that simple interactions among moving individuals (repulsion, attraction and alignment) result in travelling schools that resemble those of real fish. In most models individuals interact with all neighbours within sensory range which usually includes almost all the individuals of the school. Thus, it implies (almost) global perception. However, in reality in large groups, individuals will only interact with their neighbours close by, because they cannot perceive those farther away, since they are masked by closer ones. Here, we have developed a new model to investigate how such obstruction of perception influences aspects of social organization in schools of up to 10,000 individuals.
Applied Animal Behaviour Science, Volume 138, Issue 3, Pages 142-151, May 2012, Authors:Hanspeter Kunz; Charlotte K. Hemelrijk
Via Complexity Digest, Frédéric Amblard