Early and later adoptions differently modify mother-pup interactions
Behavioral Neuroscience. 2004-01-01; 118(3): 590-596
DOI: 10.1037/0735-7044.118.3.590
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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.
((c) 2004 APA, all rights reserved)
DOI: 10.1037/0735-7044.118.3.590
PMID: 15174937 [Indexed for MEDLINE]