High impact information on Social Dominance

• This gene is normally expressed in a manner consistent with a locus function, and, more importantly, its structure and expression are affected by a number of representative alleles in the agouti dominance hierarchy [1].
• Bbs2-null mice have neurosensory deficits, a defect in social dominance, and retinopathy associated with mislocalization of rhodopsin [2].
• Socially dominant animals had (as in previous studies) significantly exacerbated CAA, but only in the untreated segment; the effect of social dominance on CAA was abolished by long-term administration of propranolol [3].
• CONCLUSIONS: The results are consistent with the hypothesis that testosterone relates to social dominance, with the assumption that behaviors associated with dominance differ according to social context [4].
• Social dominance as a confounding factor in studies of primate aggression and serotonin [5].

Chemical compound and disease context of Social Dominance

• In contrast, competitive aggression, i.e. noninjurious aggression used to maintain social dominance ranking, was not correlated with CSF 5-HIAA or NE [6].
• Relationship between dominance hierarchy, cerebrospinal fluid levels of amine transmitter metabolites (5-hydroxyindole acetic acid and homovanillic acid) and plasma cortisol in monkeys [7].
• Linear social dominance hierarchy and corticosterone responses in male mallards and pintails [8].
• We standardized cortisol values within each species by calculating the ratio of basal cortisol concentrations of subordinates to those of dominants in stable dominance hierarchies and expressing the ratio as a percentage (relative cortisol levels) [9].
• According to this view, virilized external genitalia of female hyenas developed as a byproduct of selection for "androgen-facilitated social dominance." The evidence that female hyenas have higher androgen levels than males or other female mammals is inconclusive [10].

Biological context of Social Dominance

• RESULTS: The pattern of characteristics reflecting pressured social dominance was found to be positively related to mortality (RR = 1.6, 95% CI = 1.1-2.4, p < .02); this relation held after controlling for diastolic blood pressure, total cholesterol, and smoking status at study entry, and also after controlling for hostility [11].

Anatomical context of Social Dominance

• Immediately (within 5 min) after the termination of staged fights for social dominance, a large increase in blood plasma cortisol was observed in both fight losers (future subordinate fish) and winners (future dominant fish) [12].
• Brain mediation of Anolis social dominance displays. II. Differential forebrain serotonin turnover, and effects of specific 5-HT receptor agonists [13].

Gene context of Social Dominance

• The data are consistent with a facilitatory role for AVP in the stress response and also suggest that these particular effects are not influenced by differences in testosterone associated with social dominance [14].
• The results obtained indicate that AMPH can evoke an increase in NK-related cytotoxic activity quantitatively related to high behavioral reactivity to novelty and social dominance, however NKCC is not related to the AMPH-induced CORT changes [15].
• Previous research using positron emission tomography (PET) in monkeys has shown that attaining social dominance can result in increased DA D2 receptor availability and attenuated sensitivity to the reinforcing effects of cocaine [16].
• C57BL/6j male mice, when handled prior to the experiment, tend to display neither social dominance hierarchies nor systolic hypertension [17].
• Systolic blood pressure during the formation of a social dominance hierarchy in C57BL/6j mice [17].

References