Factors Affecting Reproduction and Mortality Among Baboons in the Okavango Delta, Botswana
@article{Cheney2004FactorsAR, title={Factors Affecting Reproduction and Mortality Among Baboons in the Okavango Delta, Botswana}, author={Dorothy L Cheney and Robert M. Seyfarth and Julia Fischer and Jacinta C. Beehner and Thore J. Bergman and S. E. Johnson and Dawn M. Kitchen and Ryne A. Palombit and Drew Rendall and Joan B. Silk}, journal={International Journal of Primatology}, year={2004}, volume={25}, pages={401-428} }
We present results of a 10-year study of free-ranging gray-footed chacma baboons (Papio ursinus griseipes) in the Okavango Delta of Botswana. The majority of deaths among adult females and juveniles were due to predation, while infants were more likely to die of infanticide. There were strong seasonal effects on birth and mortality, with the majority of conceptions occurring during the period of highest rainfall. Mortality due to predation and infanticide was highest during the 3-mo period when…
267 Citations
Reproduction, Mortality, and Female Reproductive Success in Chacma Baboons of the Okavango Delta, Botswana
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Data is presented on reproduction, mortality, and female reproductive success from a 10-year study of free-ranging chacma baboons in the Okavango Delta of Botswana and the influence of predation, infanticide, and dominance rank is examined.
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Results supported the hypothesis that male behavior functions to prevent extra-group males from gaining access to sexually receptive females in chacma baboons in the Okavango Delta, Botswana.
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References
SHOWING 1-10 OF 81 REFERENCES
DO FEMALE CHACMA BABOONS COMPETE FOR A SAFE SPATIAL POSITION IN A SOUTHERN WOODLAND HABITAT
- Environmental Science
- 1996
It is suggested that the higher-ranking females may be better protected from predation, through access to more central spatial positions in the troop, and a positive correlation was found between a female's dominance rank and the time spent next to other adult troop members.
Reproduction in wild female olive baboons
- PsychologyAmerican journal of primatology
- 1989
Evaluating several factors that influence female reproduction in a large troop of wild olive baboons found that dominance rank did not influence sex ratio at birth, infant survival in the first 2 years, or adult female mortality.
Eight‐year study of social and ecological correlates of mortality among immature baboons of Mikumi National Park, Tanzania
- Environmental ScienceAmerican journal of primatology
- 1988
The sociodemographic results are consistent with Wasser's hypothesis that cooperative attacks of female baboons upon other troop females suppress the others' reproduction and the vitality of their infants, thereby improving the relative competitive position of the attackers' own young.
THE STRUCTURE OF SOCIAL RELATIONSHIPS AMONG FEMALE SAVANNA BABOONS IN MOREMI RESERVE, BOTSWANA
- Biology
- 1999
The effects of maternal kinship, reciprocity, and dominance rank on the social relationships of female baboons in a well-habituated, free-ranging group in the Okavango Delta of Botswana are examined.
FACTORS MEDIATING INTER-GROUP ENCOUNTERS IN SAVANNAH BABOONS (PAPIO CYNOCEPHALUS URSINUS)
- Psychology
- 2004
Results supported the hypothesis that male behavior functions to prevent extra-group males from gaining access to sexually receptive females in chacma baboons in the Okavango Delta, Botswana.
The adaptive value of ‘friendships’ to female baboons: experimental and observational evidence
- PsychologyAnimal Behaviour
- 1997
Both observations and experiments suggest that the benefits of friendships to females derive from the protection of their infants against infanticide.
Vulnerability to predation in baboon populations
- Environmental Science
- 1994
This study investigates patterns of predation in Papio baboon populations across Africa. Using anecdotal reports collated from the primate and predator literature, the following analyses are…
Life history and the competitive environment: trajectories of growth, maturation, and reproductive output among chacma baboons.
- BiologyAmerican journal of physical anthropology
- 2003
Using demographic and weight data from this wild population of chacma baboons, five main findings emerged: weight for age and growth rate of infant and juvenile females are positively associated with maternal rank, and male growth is not influenced by maternal rank.
Reproductive constraints on aggressive competition in female baboons
- BiologyNature
- 1995
It is reported here that high-ranking female baboons at Gombe National Park, Tanzania, enjoy shorter interbirth intervals, improved infant survival, and accelerated maturation of their daughters, but these advantages are countered by a significantly higher probability of miscarriage, and a proportion of high- ranking females suffer from reduced fertility.
Predatory behavior of crowned hawk-eagles (Stephanoaetus coronatus) in Kibale National Park, Uganda
- Environmental ScienceBehavioral Ecology and Sociobiology
- 2001
Results indicate that primates form the vast majority of all prey items and that a non-trivial fraction of the entire primate population at Ngogo succumbs to crowned hawk-eagle predation each year.