Predatory Fish Select for Coordinated Collective Motion in Virtual Prey

Ioannou, CC and Guttal, V and Couzin, ID (2012) Predatory Fish Select for Coordinated Collective Motion in Virtual Prey. In: Science, 337 (6099). pp. 1212-1215.

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Abstract

Movement in animal groups is highly varied and ranges from seemingly disordered motion in swarms to coordinated aligned motion in flocks and schools. These social interactions are often thought to reduce risk from predators, despite a lack of direct evidence. We investigated risk-related selection for collective motion by allowing real predators ( bluegill sunfish) to hunt mobile virtual prey. By fusing simulated and real animal behavior, we isolated predator effects while controlling for confounding factors. Prey with a tendency to be attracted toward, and to align direction of travel with, near neighbors tended to form mobile coordinated groups and were rarely attacked. These results demonstrate that collective motion could evolve as a response to predation, without prey being able to detect and respond to predators.

Item Type:	Journal Article
Publication:	Science
Publisher:	American Association for the Advancement of Science
Additional Information:	Copyright for this article is belongs to American Association for the Advancement of Science.
Keywords:	INDIVIDUAL-BASED MODEL;ANIMAL GROUPS;SELFISH HERD;BEHAVIOR; DYNAMICS;SPARROWHAWKS;STRATEGIES;CONFUSION;ATTACK
Department/Centre:	Division of Biological Sciences > Centre for Ecological Sciences
Date Deposited:	16 Nov 2012 12:20
Last Modified:	16 Nov 2012 12:20
URI:	http://eprints.iisc.ac.in/id/eprint/45126

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