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Early and Later Adoptions Differently Modify Mother-Pup Interactions

Early and Later Adoptions Differently Modify Mother-Pup Interactions Life events occurring during the perinatal period have strong long-term effects. In rats, prenatal stress, postnatal maternal separations, or adoptions at different periods are known to affect behavior and reactivity to stress in offspring. To determine the role of maternal factors on differential outcome adoptions, the authors investigated interactions between pups and the adopting mothers by assessing both pups' ultrasound emissions and maternal behavior. Early and late adoptions increased mother care at the moment of adoption and during mother-infant reunion after a separation procedure. However, although early adoption induced a decrease in pups' ultrasound emissions in response to a stressful separation, later adoptions enhanced it. Results suggest a sensitive period during which fostering may change pups' and dams' behavior. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Behavioral Neuroscience American Psychological Association

Early and Later Adoptions Differently Modify Mother-Pup Interactions

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References (40)

Publisher
American Psychological Association
Copyright
Copyright © 2004 American Psychological Association
ISSN
0735-7044
eISSN
1939-0084
DOI
10.1037/0735-7044.118.3.590
pmid
15174937
Publisher site
See Article on Publisher Site

Abstract

Life events occurring during the perinatal period have strong long-term effects. In rats, prenatal stress, postnatal maternal separations, or adoptions at different periods are known to affect behavior and reactivity to stress in offspring. To determine the role of maternal factors on differential outcome adoptions, the authors investigated interactions between pups and the adopting mothers by assessing both pups' ultrasound emissions and maternal behavior. Early and late adoptions increased mother care at the moment of adoption and during mother-infant reunion after a separation procedure. However, although early adoption induced a decrease in pups' ultrasound emissions in response to a stressful separation, later adoptions enhanced it. Results suggest a sensitive period during which fostering may change pups' and dams' behavior.

Journal

Behavioral NeuroscienceAmerican Psychological Association

Published: Jun 1, 2004

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