Document Detail

Personality predicts individual responsiveness to the risks of starvation and predation.
MedLine Citation:
PMID:  22179807     Owner:  NLM     Status:  MEDLINE    
Theory suggests that individual personality is tightly linked to individual life histories and to environmental variation. The reactive-proactive axis, for example, is thought to reflect whether individuals prioritize productivity or survival, mutually exclusive options that can be caused by conflicts between foraging and anti-predation behaviour. Evidence for this trade-off hypothesis, however, is limited. Here, we tested experimentally whether exploration behaviour (EB), an assay of proactivity, could explain how great tits (Parus major) respond to changes in starvation and predation risk. Individuals were presented with two feeders, holding good or poor quality food, which interchanged between safe and dangerous positions 10 m apart, across two 24 h treatments. Starvation risk was assumed to be highest in the morning and lowest in the afternoon. The proportion of time spent feeding on good quality food (PTG) rather than poor quality food was repeatable within treatments, but individuals varied in how PTG changed with respect to predation- and starvation-risk across treatments. This individual plasticity variation in foraging behaviour was linked to EB, as predicted by the reactive-proactive axis, but only among individuals in dominant social classes. Our results support the trade-off hypothesis at the level of individuals in a wild population, and suggest that fine-scale temporal and spatial variation may play important roles in the evolution of personality.
J L Quinn; E F Cole; J Bates; R W Payne; W Cresswell
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2011-12-16
Journal Detail:
Title:  Proceedings. Biological sciences / The Royal Society     Volume:  279     ISSN:  1471-2954     ISO Abbreviation:  Proc. Biol. Sci.     Publication Date:  2012 May 
Date Detail:
Created Date:  2012-04-11     Completed Date:  2012-10-02     Revised Date:  2013-06-26    
Medline Journal Info:
Nlm Unique ID:  101245157     Medline TA:  Proc Biol Sci     Country:  England    
Other Details:
Languages:  eng     Pagination:  1919-26     Citation Subset:  IM    
Department of Zoology, Edward Grey Institute, University of Oxford, South Parks Road, Oxford OX1 3PS, UK.
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MeSH Terms
Behavior, Animal*
Feeding Behavior
Passeriformes / physiology*
Predatory Behavior*
Grant Support
//Biotechnology and Biological Sciences Research Council

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