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Serum corticosterone (Cpd B) and testosterone (T) concentrations were studied during the avoidance phase of artificially induced parental behavior in male rats. Adult rats were exposed to the presence of standard size foster pups for 60 min daily. On day 1 the avoidance behavior characterized by typical burying reaction was accompanied by an elevation of Cpd B and T. The behavioral responses and hormonal changes diminished during the days of repeated exposure. It was found that neither pup-killing nor spontaneous retrieval were dependent on circulating hormones in the male rat. Subcutaneous injection of ACTH 4-10 inhibited extinction of the avoidance and the humoral responses in both female and male animals. Oxytocin failed to exert any influence on the behavioral and hormonal components of the aversive reaction.
L Korányi, and
E Endröczi
February 1977,
Physiology & behavior,
L Korányi, and
E Endröczi
January 2013,
Neuroendocrinology,
L Korányi, and
E Endröczi
December 2003,
Life sciences,
L Korányi, and
E Endröczi
June 1977,
Psychopharmacology,
L Korányi, and
E Endröczi
October 1998,
European journal of applied physiology and occupational physiology,
L Korányi, and
E Endröczi
November 2003,
Hormones and behavior,
L Korányi, and
E Endröczi
February 2009,
Physiology & behavior,
L Korányi, and
E Endröczi
June 1975,
The Journal of endocrinology,
L Korányi, and
E Endröczi
May 1977,
Biochimica et biophysica acta,
L Korányi, and
E Endröczi
October 1984,
Endocrinology,
