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Consistent Individual Differences Drive Collective Behavior and Group Functioning of Schooling Fish [Current Biology]

par Frédéric Magné - publié le

The ubiquity of consistent inter-individual differences in behavior (“animal personalities”) suggests that they might play a fundamental role in driving the movements and functioning of animal groups, including their collective decision-making, foraging performance, and predator avoidance. Despite increasing evidence that highlights their importance, we still lack a unified mechanistic framework to explain and to predict how consistent inter-individual differences may drive collective behavior. Here we investigate how the structure, leadership, movement dynamics, and foraging performance of groups can emerge from inter-individual differences by high-resolution tracking of known behavioral types in free-swimming stickleback (Gasterosteus aculeatus) shoals.(...)

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