Early and later adoptions differently modify mother-pup interactions

Muriel Darnaudéry, Simona Cabib, Muriel Koehl, Arnaud Barbazanges, Michel Le Moal, Stefania Maccari

Research output: Contribution to journalArticlepeer-review


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.

Original languageEnglish
Pages (from-to)590-596
Number of pages7
JournalBehavioral Neuroscience
Issue number3
Publication statusPublished - Jun 2004

ASJC Scopus subject areas

  • Behavioral Neuroscience
  • Clinical Psychology


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