| Social feedback and the emergence of leaders and followers. | |
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MedLine Citation:
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PMID: 19185497 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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In many animal groups, certain individuals consistently appear at the forefront of coordinated movements [1-4]. How such leaders emerge is poorly understood [5, 6]. Here, we show that in pairs of sticklebacks, Gasterosteus aculeatus, leadership arises from individual differences in the way that fish respond to their partner's movements. Having first established that individuals differed in their propensity to leave cover in order to look for food, we randomly paired fish of varying boldness, and we used a Markov Chain model to infer the individual rules underlying their joint behavior. Both fish in a pair responded to each other's movements-each was more likely to leave cover if the other was already out and to return if the other had already returned. However, we found that bolder individuals displayed greater initiative and were less responsive to their partners, whereas shyer individuals displayed less initiative but followed their partners more faithfully; they also, as followers, elicited greater leadership tendencies in their bold partners. We conclude that leadership in this case is reinforced by positive social feedback. |
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Authors:
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Jennifer L Harcourt; Tzo Zen Ang; Gemma Sweetman; Rufus A Johnstone; Andrea Manica |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2009-01-29 |
Journal Detail:
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Title: Current biology : CB Volume: 19 ISSN: 1879-0445 ISO Abbreviation: Curr. Biol. Publication Date: 2009 Feb |
Date Detail:
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Created Date: 2009-02-12 Completed Date: 2009-04-24 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9107782 Medline TA: Curr Biol Country: England |
Other Details:
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Languages: eng Pagination: 248-52 Citation Subset: IM |
Affiliation:
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Department of Zoology, University of Cambridge, Cambridge, UK. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Analysis of Variance Animals Appetitive Behavior / physiology Feedback* Great Britain Leadership* Markov Chains Models, Biological Monte Carlo Method Smegmamorpha / physiology* Social Behavior* Video Recording |
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