A brief report on the social behavior of the crested mangabey (Cercocebus galeritus galeritus) with a comparison to the sooty mangabey (C. torquatus atys) |
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Authors: | Deborah A Gust |
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Institution: | (1) Emory University, USA;(2) Present address: Yerkes Regional Primate Research Center Field Station, 2409 Taylor Lane, 30243 Lawrenceville, Georgia, USA |
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Abstract: | A group of 38 free ranging crested mangabeys in the Tana River Primate Reserve was studied over a 6-week period for a total
of 209.5 hr and behavioral comparisons made to a captive group of sooty mangabeys. Although quantitative comparisons between
these two mangabey species are not possible, the present data suggest that these geographically separated mangabeys share
several behavioral similarities. Copulatory behavior in both species involved a pattern of female darting and female vocalizing
following the mount by the male. Several similarities in agonistic behavior also existed: 1) The victim often returned or
stayed within 1 m of the aggressor following an agonistic episode; 2) retaliation in which the victim first fled or avoided
the aggressor, then subsequently, chased or lunged at the aggressor, typically while screaming; and 3) frequent redirection
of aggression by the victim following an agonistic episode. A dominance rank reversal occurred between the two adult male
crested mangabeys with no severe wounding. The rank reversal seemed to be related to two subsequent behaviors which included
infant carriage by the deposed alpha in the presence of the new alpha male and female demonstrations of extreme protectiveness
of their infants in the presence of the new alpha male. Both of these behaviors have been reported in the sooty mangabey group. |
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Keywords: | Mangabeys Aggression Rank reversal Reproductive behavior |
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