| Food deprivation modifies corticosterone-dependent behavioural shifts in the common lizard. | |
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MedLine Citation:
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PMID: 19925801 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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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. |
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Authors:
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J Cote; J Clobert; L Montes Poloni; C Haussy; S Meylan |
Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2009-11-16 |
Journal Detail:
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Title: General and comparative endocrinology Volume: 166 ISSN: 1095-6840 ISO Abbreviation: Gen. Comp. Endocrinol. Publication Date: 2010 Mar |
Date Detail:
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Created Date: 2010-02-17 Completed Date: 2010-08-06 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0370735 Medline TA: Gen Comp Endocrinol Country: United States |
Other Details:
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Languages: eng Pagination: 142-51 Citation Subset: IM |
Copyright Information:
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Published by Elsevier Inc. |
Affiliation:
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Laboratoire Fonctionnement et Evolution des Systèmes Ecologiques, UMR 7625, Université Pierre et Marie Curie, 7, quai Saint-Bernard, 75005 Paris, France. jdcote@ucdavis.edu |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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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:
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50-22-6/Corticosterone |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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