Document Detail


Food deprivation modifies corticosterone-dependent behavioural shifts in the common lizard.
MedLine Citation:
PMID:  19925801     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Stressful events typically induce glucocorticoid production that suppresses unnecessary physiological and behavioural functions. The glucocorticoid production also temporally activates alternative behavioural and physiological pathways. These responses are generally adaptive changes to avoid the negative effects of stressors. However, under low food availability, these behavioural and physiological modifications might lead to energetic costs. We therefore predict that these responses should not be activated when there are energetic constraints (e.g., low food availability). We experimentally tested whether food deprivation modifies corticosterone-induced behavioural and physiological responses in captive male common lizards. We measured corticosterone-induced responses in terms of body mass, metabolic rate, activity level and basking behaviour. We found that corticosterone-induced various behavioural and physiological responses which were dependent on food availability. Well-fed lizards treated with corticosterone were active earlier, and increased their basking behaviour. These behavioural modifications did not occur in food-deprived lizards. This inactivation of stress-related behavioural changes probably allows the lizard to save energy.
Authors:
J Cote; J Clobert; L Montes Poloni; C Haussy; S Meylan
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2009-11-16
Journal Detail:
Title:  General and comparative endocrinology     Volume:  166     ISSN:  1095-6840     ISO Abbreviation:  Gen. Comp. Endocrinol.     Publication Date:  2010 Mar 
Date Detail:
Created Date:  2010-02-17     Completed Date:  2010-08-06     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0370735     Medline TA:  Gen Comp Endocrinol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  142-51     Citation Subset:  IM    
Copyright Information:
Published by Elsevier Inc.
Affiliation:
Laboratoire Fonctionnement et Evolution des Systèmes Ecologiques, UMR 7625, Université Pierre et Marie Curie, 7, quai Saint-Bernard, 75005 Paris, France. jdcote@ucdavis.edu
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MeSH Terms
Descriptor/Qualifier:
Animals
Basal Metabolism / physiology
Behavior, Animal / physiology*
Body Size / physiology
Corticosterone / pharmacology,  physiology*
Energy Metabolism
Food Deprivation / physiology*
Lizards / physiology*
Male
Stress, Physiological
Chemical
Reg. No./Substance:
50-22-6/Corticosterone

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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