Document Detail

Experimentally induced sickness decreases food intake, but not hoarding, in Siberian hamsters (Phodopus sungorus).
MedLine Citation:
PMID:  18760337     Owner:  NLM     Status:  MEDLINE    
A wide range of physiological and behavioral alterations occur in response to sickness. Sickness behaviors, rather than incidental by-products or side-effects of acute illness, serve as adaptive functional responses that allow animals to cope with a pathogenic challenge. Among the more salient sickness behaviors is a reduction in food intake; virtually all sick animals display marked decreases in this behavior. Food intake, however, is only one component of the food-related behavioral repertoire. For many mammalian species, food hoarding represents a substantial portion of the total energetic budget. Here we tested the effects of experimental sickness on food hoarding and food intake in a naturally food hoarding species, Siberian hamsters (Phodopus sungorus). Adult male and female hamsters received injections of lipopolysaccharide (LPS) to induce sickness or control injections. LPS-induced sickness resulted in a marked decrease in food intake in both males and females, but did not decrease hoarding in either sex. These results support previous findings suggesting that food hoarding and food intake appear to be differentially regulated at the physiological level.
Alfredo Durazzo; Kevin Proud; Gregory E Demas
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2008-08-08
Journal Detail:
Title:  Behavioural processes     Volume:  79     ISSN:  1872-8308     ISO Abbreviation:  Behav. Processes     Publication Date:  2008 Nov 
Date Detail:
Created Date:  2008-10-20     Completed Date:  2008-12-22     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7703854     Medline TA:  Behav Processes     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  195-8     Citation Subset:  IM    
Department of Biology, Center for the Integrative Study of Animal Behavior and Program in Neuroscience, Indiana University, Bloomington, IN 47405, USA.
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MeSH Terms
Analysis of Variance
Behavior, Animal / drug effects,  physiology*
Body Weight / drug effects,  physiology
Eating / drug effects,  physiology*
Enzyme-Linked Immunosorbent Assay / methods
Feeding Behavior / drug effects,  physiology*
Immunoglobulin G / blood
Immunoglobulins / blood
Lipopolysaccharides / administration & dosage,  immunology,  toxicity
Phodopus / physiology*
Sex Factors
Stereotyped Behavior / drug effects,  physiology
Reg. No./Substance:
0/Immunoglobulin G; 0/Immunoglobulins; 0/Lipopolysaccharides; 0/antilipopolysaccharide antibodies

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

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