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Selfish-herd behaviour of sheep under threat

Andrew King Orcid Logo, Alan M. Wilson, Simon D. Wilshin, John Lowe, Hamed Haddadi, Stephen Hailes, A. Jennifer Morton

Current Biology, Volume: 22, Issue: 14, Pages: R561 - R562

Swansea University Author: Andrew King Orcid Logo

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Abstract

Flocking is a striking example of collective behaviour that is found in insect swarms, fish schools and mammal herds. A major factor in the evolution of flocking behaviour is thought to be predation, whereby larger and/or more cohesive groups dilute the effects of predators. In this work used global...

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Published in: Current Biology
ISSN: 09609822
Published: 2012
Online Access: Check full text

URI: https://cronfa.swan.ac.uk/Record/cronfa13504
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Abstract: Flocking is a striking example of collective behaviour that is found in insect swarms, fish schools and mammal herds. A major factor in the evolution of flocking behaviour is thought to be predation, whereby larger and/or more cohesive groups dilute the effects of predators. In this work used global positioning system (GPS) data to characterise the response of a group of prey animals (a flock of sheep) to an approaching predator (a herding dog). This is the first time such data has been collected in a terrestrial system. Analyses of relative sheep movement trajectories showed that sheep exhibit a strong attraction towards the centre of the flock under threat, a pattern that we could re-create using a simple mathematical model. The findings support a 40-year-old "selfish herd theory" put forward by evolutionary biologist Bill Hamilton.
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College: Faculty of Science and Engineering
Issue: 14
Start Page: R561
End Page: R562