Diurnal cycle of mother-young contact in Norway rats |
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| Authors: | M Leon L Adels R Coopersmith B Woodside |
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| Affiliation: | Department of Psychobiology, University of California, Irvine, CA 92717 USA;Department of Psychology, Concordia University, Montreal, Quebec, Canada H4B 1R6 |
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| Abstract: | Mother rats maintained on a LD 12:12 photoperiod (lights on 0800 hrs) had longer contact bouts with their offspring during the day than during the night and maternal brain temperature peaked during the night. When the daily temperature cycle was suppressed by removal of adrenal and ovarian hormones, the daily maternal contact cycle was also suppressed. These data are consistent with a thermal model for the limitation of mother-young contact bout duration. |
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| Keywords: | Mother-young contact Lactation Thermoregulation Temperature cycles Adrenal hormones |
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