International Journal of Primatology

, Volume 19, Issue 2, pp 287–297 | Cite as

Group Size and Composition of Colobus guereza in Kyambura Gorge, Southwest Uganda, in Relation to Chimpanzee Activity

  • Oliver Krüger
  • Edda Affeldt
  • Marian Brackmann
  • Kirsten Milhahn


We documented and assessed the influence of chimpanzee activity on group size and composition of Colobus guereza in Kyambura Gorge, southwest Uganda, from July to September, 1994 and in February and March 1996. The population density of colobus is very high: 347 individuals per km2. Density differed outside activity centers of chimpanzees (525 individuals per km2) and within the centers (186 per km2). We identified a total of 24 colobus groups, ranging between 3 and 13 individuals. Of the 24 groups, 22 were one-male groups. Groups were smaller and the percentage of subadults and juveniles was lower in groups within chimpanzee activity centers. Estimates of home ranges are between 1.7 and 6.2 ha, but neighboring home ranges overlapped ≤80%. Only a territory of approximately 0.5 ha was defended by the alpha male.

Colobus guereza chimpanzee Pan troglodytes group composition home range predation risk 


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  1. Boesch, C. (1994). Chimpanzees-red colobus monkeys: A predator-prey system. Anim. Behav. 47: 1135-1148.Google Scholar
  2. Busse, C. D. (1977). Chimpanzee predation as a possible factor in the evolution of red colobus monkey social organization. Evolution 31: 907-911.Google Scholar
  3. Clutton-Brock, T. M. (1972). Red Colobus: Feeding and Ranging Behaviour, Ph.D. thesis, Cambridge University, Cambridge.Google Scholar
  4. Clutton-Brock, T. M. (1975). Feeding behaviour of red colobus and black and white colobus in East Africa. Folia Primatol. 23: 165-207.Google Scholar
  5. Dandelot, P. (1971). Order primates. In Meester, J., and Setzer, H. W. (eds.), The Mammals of Africa: An Identification Manual, Part 3, Smithsonian Institution Press, Washington, DC.Google Scholar
  6. Davies, A. G. (1994). Colobine populations. In Davies, A. G., and Oates, J. F. (eds.), Colobine Monkeys: Their Ecology, Behaviour and Evolution, Cambridge University Press, Cambridge.Google Scholar
  7. Davies, A. G., and Oates, J. F. (eds.) (1994). Colobine Monkeys: Their Ecology, Behaviour and Evolution, Cambridge University Press, Cambridge.Google Scholar
  8. Dunbar, R. I. M. (1987). Habitat quality, population dynamics, and group composition in colobus monkeys (Colobus guereza). Int. J. Primatol. 8: 299-330.Google Scholar
  9. Dunbar, R. I. M. (1988). Primate Social Systems, Croom & Helm, Beckenham.Google Scholar
  10. Dunbar, R. I. M., and Dunbar, E. P. (1974). Ecology and population dynamics of Colobus guereza in Ethopia. Folia Primatol. 21: 188-208.Google Scholar
  11. Dunbar, R. I. M., and Dunbar, E. P. (1976). Contrasts in social structure among black-and-white colobus monkey groups. Anim. Behav. 24: 84-92.Google Scholar
  12. Groves, C. P. (1973). Notes on the ecology and behaviour of the Angola colobus (Colobus angolensis P L Sclater 1860) in N.E. Tanzania. Folia Primatol. 20: 12-26.Google Scholar
  13. Kingdon, J. S. (1971). East African Mammals, Vol. 1. Primates, Academic Press, London.Google Scholar
  14. Kingston, T. J. (1971). Notes on the black and white colobus monkey in Kenya. E. Afr. Wildl. J. 9: 172-175.Google Scholar
  15. Krüger, O. (1997). Population density and intra-and interspecific competition of the African fish eagle Haliaeetus vocifer in Kyambura Game Reserve, southwest Uganda. Ibis 139: 19-24.Google Scholar
  16. Krüger, O., and Johnson, D. (1996). Bird communities in Kyambura Game Reserve, southwest Uganda. Ibis 138: 564-567.Google Scholar
  17. Leskes, A., and Acheson, N. H. (1970). Social organization of a free-ranging troop of black and white colobus monkeys (Colobus abyssinicus). In Kummer, H. (ed.), Proc. 3rd Int. Congr. Primat. Zürich, Vol. 3, Karger, Basel.Google Scholar
  18. Marler, P. (1969). Colobus guereza: Territoriality and group composition. Science 163: 93-95.Google Scholar
  19. Marler, P. (1972). Vocalizations of East African monkeys. II. Black and white colobus. Behaviour 42: 175-197.Google Scholar
  20. Oates, J. F. (1977a). The social life of a black and white colobus monkey, Colobus guereza. Z. Tierpsychol. 45: 1-60.Google Scholar
  21. Oates, J. F. (1977b). The guereza and its food. In Clutton-Brock, T. H. (ed.), Primate Ecology, Academic Press, London.Google Scholar
  22. Rahm, U. (1970). Ecology, zoogeography, and systematics of some african forest monkeys. In Napier, J. R., and Napier, P. H. (eds.), Old World Monkeys: Evolution, Systematics and Behaviour, Academic Press, New York.Google Scholar
  23. Schenkel, R., and Schenkel-Hullinger, L. (1967). On the sociology of free-ranging colobus (Colobus guereza caudatus Thomas 1885). In Starck, D., Schneider, R., and Kuhn, H.-J. (eds.), Neue Ergebnisse der Primatologie, Gustav Fischer-Verlag, Stuttgart.Google Scholar
  24. Stanford, C. B. (1995). The influence of chimpanzee predation on group size and anti-predator behaviour in red colobus monkeys. Anim. Behav. 49: 577-587.Google Scholar
  25. Stanford, C. B., Wallis, J., Matama, H., and Goodall, J. (1994). Patterns of predation by chimpanzees on red colobus monkeys in Gombe National Park, Tanzania, 1982–1991. Am. J. Phys. Anthropol. 94: 213-228.Google Scholar
  26. Struhsaker, T. T., and Oates, J. F. (1975) Comparison of the behaviour and ecology of red colobus and black-and-white colobus monkeys in Uganda: A summary. In Tuttle, R. H. (ed.), Socioecology and Psychology of Primates, Mouton, The Hague.Google Scholar
  27. Ullrich, W. (1961). Zur Biologie und Soziologie der Colobusaffen (Colobus guereza caudatus Thomas 1885). Zool. Gart. 25: 305-368.Google Scholar
  28. von Hippel, F. A. (1996). Interactions between overlapping multimale groups of black and white colobus monkeys (Colobus guereza) in the Kakamega Forest, Kenya. Am. J. Primatol. 38: 193-209.Google Scholar

Copyright information

© Plenum Publishing Corporation 1998

Authors and Affiliations

  • Oliver Krüger
    • 1
  • Edda Affeldt
    • 1
  • Marian Brackmann
    • 1
  • Kirsten Milhahn
    • 1
  1. 1.Department of Animal BehaviourUniversity of Bielefeld, Faculty of BiologyBielefeldGermany

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