Article Abstract:
Research is presented describing the raise the stakes (RTS) reciprocity strategy of female chacma baboons, Papio cynocephalus ursinus, living in four troops in two populations. An analysis of grooming behaviour is also made.
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Article Abstract:
Research undertaken among mountain baboons, Papio cynocephalus ursinus, in the Drakensberg mountains of South Africa confirms Dunbar's hypothesis that limits on social time restrict the size to which baboon troops in any particular population can grow before fissioning. This has been established specifically in relation to grooming between females. There seems to be an upper limit to the number of females that can be effectively connected within a single social group. It appears that there is an impetus for females to groom all other females, as the length of grooming bouts declines before grooming group size is capped.
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Article Abstract:
Savannah baboon troops from the Drakensberg mountains were observed to determine the factors that affect herding in these groups during encounters with other troops. Results reveal that the sex distribution within the troop and the proximity of inter-troop encounter influence the tendency to herd. Troops with female-biased sex distribution tended to herd and more proximate encounters with other troops increases the probability to herd.
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