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The Effect Of Gonadal Hormones On Agonistic Behavior In Previously Defeated Female And Male Syrian Hamsters, Matia B. Solomon
The Effect Of Gonadal Hormones On Agonistic Behavior In Previously Defeated Female And Male Syrian Hamsters, Matia B. Solomon
Psychology Dissertations
Following social defeat, male hamsters exhibit behavioral changes characterized by a breakdown of normal territorial aggression and an increase in submissive/defensive behaviors in the presence of a non-aggressive intruder (NAI). We have termed this phenomenon conditioned defeat (CD). By contrast, only a small subset of defeated females exhibit submissive/defensive behavior in the presence of a NAI. We hypothesized that fluctuations in gonadal hormones might contribute to differences in the display of submissive behavior in intact female hamsters. Following social defeat, proestrous females (higher endogenous estradiol) were more likely to display conditioned defeat compared with diestrous 1 (lower endogenous estradiol) females. …