, Volume 39, Issue 11, pp 1316–1317 | Cite as

Corticoadrenal and behavioral response to open field in pairs of male rats either familiar or non-familiar to each other

  • A. Armario
  • R. Ortiz
  • J. Balasch
Short Communications Neurobiology, Behavior


The effect of the presence either of a familiar or non-familiar conspecific animal on serum corticosterone and some behavioral responses in the open field was studied in male Sprague-Dawley rats. Animals tested in presence of a familiar animal showed a higher corticosterone response and a higher defecation rate. It suggests that rats experienced more emotional reactivity in presence of a familiar animal than in presence of a non-familiar one. Time spent in social interaction was higher in non-familiar pairs; however, ambulation and rearing were lower, suggesting competition between social investigation and novel environment exploration.


Social Interaction Open Field Behavioral Response Corticosterone Emotional Reactivity 
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Copyright information

© Birkhäuser Verlag 1983

Authors and Affiliations

  • A. Armario
    • 1
  • R. Ortiz
    • 1
  • J. Balasch
    • 1
  1. 1.Department of Animal Physiology, Faculty of ScienceUniversidad Autonoma de BarcelonaBellaterra(Spain)

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