Social correlates of testosterone and ornamentation in male mandrills

@article{Setchell2008SocialCO,
  title={Social correlates of testosterone and ornamentation in male mandrills},
  author={Joanna M Setchell and Tessa E. Smith and E. Jean Wickings and Leslie A. Knapp},
  journal={Hormones and Behavior},
  year={2008},
  volume={54},
  pages={365-372}
}
We investigated relationships between fecal androgen concentrations, facial coloration and behaviour in semi-free-ranging male mandrills. We found that fecal androgen levels were significantly positively related to dominance rank, independent of rank stability and the mating period, suggesting that male mandrills live in a permanently aggressive context in which they must actively maintain their dominance status. Facial red coloration was also significantly related to both fecal androgen levels… 
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