Document Detail


Social influences on cortisol and behavioral responses of preweaning, periadolescent, and adult guinea pigs.
MedLine Citation:
PMID:  12044604     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
In various species, the presence of an attachment figure can reduce hypothalamic-pituitary-adrenal (HPA) responses. In the guinea pig, the mother reduces HPA elevations of her young both prior to and following weaning. Recently, an unfamiliar female was also found to reduce the HPA responses of postweaning guinea pigs. The present study evaluated the specificity and ontogenetic course of the effect of the unfamiliar female. Experiment 1 found that an unfamiliar adult male did not reduce the cortisol response of periadolescent subjects during novelty exposure. Experiment 2 showed that the effect of the unfamiliar female was present as early as the second week of life. Experiment 3 found that neither an unfamiliar adult female nor male affected the cortisol response in adult guinea pigs. In all experiments, the mother reduced the cortisol elevations of her offspring. The ability to buffer the cortisol response could not be explained by the amount of agonistic behavior subjects received from the stimulus animals. Results indicate that the mother guinea pig has a persisting ability to buffer HPA responses in her developing offspring; that during at least a large portion of the time that the mother can moderate the cortisol response of her young, so too can an unfamiliar adult female, but not an unfamiliar adult male; and that the ability of social partners to moderate HPA activity is not readily predictable from behavioral interactions.
Authors:
Michael B Hennessy; Shonagh K O'Leary; Jesse L Hawke; Shannon E Wilson
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  Physiology & behavior     Volume:  76     ISSN:  0031-9384     ISO Abbreviation:  Physiol. Behav.     Publication Date:  2002 Jun 
Date Detail:
Created Date:  2002-06-04     Completed Date:  2002-09-23     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0151504     Medline TA:  Physiol Behav     Country:  United States    
Other Details:
Languages:  eng     Pagination:  305-14     Citation Subset:  IM    
Affiliation:
Department of Psychology, 335 Fawcett Hall, Wright State University, Dayton, OH 45435, USA. michael.hennessy@wright.edu
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MeSH Terms
Descriptor/Qualifier:
Aging / blood*
Agonistic Behavior / physiology
Animals
Animals, Suckling / physiology*
Behavior, Animal / physiology*
Female
Guinea Pigs
Hydrocortisone / blood*
Male
Sexual Behavior, Animal / physiology
Social Environment*
Vocalization, Animal / physiology
Chemical
Reg. No./Substance:
50-23-7/Hydrocortisone

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


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