International Journal of Primatology

, Volume 23, Issue 6, pp 1257–1285 | Cite as

Influencing Western Gorilla Nest Construction at Mondika Research Center

  • Patrick T. Mehlman
  • Diane M. Doran


We collected nesting data from 512 fresh nest sites, including 3725 individual nests, of western gorillas at the Mondika Research Site, Central African Republic and Republic of Congo from 1996 through mid-1999. The mean count of nests of weaned individuals is 7.4 per nest site. Nest types included bare earth with no construction (45% of total), partial to full ground construction (34%), and arboreal (21%). Females, blackbacks, and juveniles as a combined age-sex class built significantly more arboreal nests (21% of total) than silverbacks did (2%). Proximate rainfall (independent of temperature) is significantly correlated with nest construction, i.e., as rainfall increased, silverbacks built more ground nests, and non-silverbacks built more ground and arboreal nests. Maximum daily temperature (independent of rainfall) is significantly negatively correlated with nest construction, i.e., as temperature increased, gorillas slept more often on bare earth without constructing a nest. Accordingly, we conclude that although nest building in gorillas may have innate components shared with other great apes, it is a flexible behavioral pattern that in some western populations is often not exhibited. It appears that when gorillas in this population build nests, they do so in response to both wet and cool conditions, and independently of diet, ranging, or group size.

apes Gorilla g. gorilla nests climate 


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  1. Anderson, J. R. (1984). Ethology and ecology of sleep in monkeys and apes. Adv. Stud Behav. 14: 165–229.Google Scholar
  2. Baldwin, P. J., Sabater, P. I. J., McGrew, W. C., and Tutin C. E. G. (1981). Comparisons of nests made by different populations of chimpanzees (Pan troglodytes). Primates 22: 474–486.Google Scholar
  3. Bermejo, M. (1997). Study of western lowland gorillas in the Lossi forest of northern Congo and a pilot gorilla tourism plan. Conserv. News 11: 6–7.Google Scholar
  4. Bernstein, I. S. (1962). Response to nesting materials of wild born and captive born chimpanzees. Anim. Behav. 10: 1–6.Google Scholar
  5. Bernstein, I. S. (1969). A comparison of nesting patterns among the three Great Apes. In Bourne, G. H. (ed.), The Chimpanzee, Vol. 1, Karger, Basel. pp 393–402.Google Scholar
  6. Bradley, B. J., Doran, D. M., Boesch, C., and Vigilant, L. (2001). Paternity assessment in wild western lowland gorillas using DNA from feces. In XVIII Congress of the International Primatological Society. Adelaide, Australia.Google Scholar
  7. Casimir, M. J. (1979). An analysis of gorilla nesting sites of the Mt. Kahuzi region, (Zaire). Folia Primatologica 32: 290–305.Google Scholar
  8. Dixson, A. F. (1981). The Natural History of the Gorilla,Weidenfeld and Nicolson, London.Google Scholar
  9. Doran, D. M., and McNeilage, A. (2001). Subspecific variation in gorilla behavior: The influence of ecological and social factors. In Robbins, M. M., Sicotte, P., and Stewart, K. J. (eds.), Mountain Gorillas, Cambridge University Press, Cambridge, pp. 123–149.Google Scholar
  10. Doran, D. M., McNeilage, A., Greer,D., Bocian,C., Mehlman,P., and N. Shah (in press).Western lowland gorilla diet and resource availability: New evidence, across-site comparisons and reflections on indirect sampling methods. American J. of Primatol.Google Scholar
  11. Fay, J. M. (1997). The Ecology, Social Organization, Populations, Habitat and History of the Western Lowland Gorilla (Gorilla gorilla gorilla Savage and Wyman 1847), Ph.D. Dissertation, Washington University.Google Scholar
  12. Fossey, D. (1974). Gorillas in the Mist, Houghton Mifflin, BostonGoogle Scholar
  13. Fruth, B., and Hohmann, G. (1994). Comparative analyses of nest building behavior in bonobos and chimpanzees. In Wrangham, R. W., McGrew, W. C., de Waal, F. B. M., and Heltne, P. G. (eds.), Chimpanzee Cultures, Harvard University Press, Cambridge, MA, pp. 109–128.Google Scholar
  14. Fruth, B., and Hohmann, G. (1996). Nest building behavior in the great apes: The great leap forward? In Great Ape Societies, McGrew, W., Marchant, L. F., and Nishida, T. (eds.), Cambridge University Press, Cambridge, pp. 225–240.Google Scholar
  15. Goldsmith, M. L. (1996). Ecological Influences on the Ranging and Grouping Behavior of Western Lowland Gorillas at Bai Hokou, Central African Republic, Ph.D. Dissertation, State University of New York at Stony Brook.Google Scholar
  16. Groves, C. P., and Sabater, Pi, J. (1985). From ape's nest to human fix-point.Man. 20: 22–47.Google Scholar
  17. Hall, J. S., White, L. J. T., Inogwabini, B. I., Omari, I., and Morland, E. A. (1998).Survey of Grauer's gorillas (Gorilla gorilla graueri) and eastern chimpanzees (Pan troglodytes schweinfurthi) in the Kahuzi-Beiga National Park lowland sector and adjacent forest in Eastern Democratic Republic of Congo. Int. J. Primatol. 19(2): 207–235.Google Scholar
  18. Lilly, A., Mehlman, P. T., and Doran, D. (2002). Intestinal parasites in gorillas, chimpanzees, and humans at Mondika Research Site, Dzanga-Ndoki National Park, Central African Republic. Int. J. Primatol. 23: 555–573.Google Scholar
  19. Magliocca, F., Querouil, S., and Gautier-Hion, A. (1999). Population structure and group composition of western lowland gorillas in north-western Republic of Congo. Am. J. Primatol. 48: 1–14.Google Scholar
  20. Parnell, R. J. (2002). Group size and structure in western lowland gorillas (Gorilla gorilla gorilla) at Mbeli Bai, Republic of Congo. Am. J. Primatol. 56: 193–206.Google Scholar
  21. Olejniczak, C. (1996). Update on the Mbeli Bai gorilla study, Nouabale-Ndoki National Park, northern Congo. Gorilla Conserv. News 10: 5–8.Google Scholar
  22. Remis, M. J. (1993). Nesting behavior of lowland gorillas in the Dzanga-Sangha Reserve, Central African Republic: Implications for population estimates and understandings of group dynamics. Tropics 2(4): 245–255.Google Scholar
  23. Remis, M. J. (1994). Feeding Ecology and Positional Behavior of Western Lowland Gorillas (Gorilla gorilla gorilla) in the Central African Republic, Ph.D. Dissertation,Yale University.Google Scholar
  24. Remis, M. J. (1997a). Ranging and grouping patterns of a western lowland gorilla group at Bai Hokou, Central African Republic. Am. J. Primatol. 43: 111–133.Google Scholar
  25. Remis, M. J. (1997b). Western lowland gorillas (Gorilla gorilla gorilla) as seasonal frugivores: Use of variable resources. Am. J. Primatol. 43: 87–109.Google Scholar
  26. Schaller, G. B. (1963). The Mountain Gorilla Ecology and Behavior, The University of Chicago Press, Chicago.Google Scholar
  27. Sholley, M. (1991). Conserving gorillas in the midst of guerillas. In Proceedings of the American Association of Zoological Parks and Aquariums, pp. 30–37.Google Scholar
  28. Sokal, R., and Rohlf, F. J. (1995) Biometry,W.H. Freeman, New York.Google Scholar
  29. Tutin, C. E. G. (1996). Ranging and social structure of lowland gorillas in the Lopé Reserve, Gabon. In McGrew, W. C., Marchant, L. F., and Nishida, T. (eds.), Great Ape Societies, Cambridge University Press, Cambridge, pp. 58–70.Google Scholar
  30. Tutin, C. E. G., and Fernandez, M. (1984). Nationwide census of gorilla (Gorilla g. gorilla) and chimpanzee (Pan t. troglodytes) populations in Gabon. Am. J. Primatol. 30: 195–211.Google Scholar
  31. Tutin, C. E.G., and Fernandez, M. (1992). Insect-eating by sympatric lowland gorillas (Gorilla g.gorilla) and chimpanzees (Pan t. troglodytes) in the Lopé Reserve, Gabon. Int. J. Primatol. 28: 29–40.Google Scholar
  32. Tutin, C. E. G., and Fernandez, M., Roger, M. E, Williamson, E. A., and McGrew, W. C. (1991).Foraging profiles of sympatric lowland gorillas and chimpanzees in the Lopé Reserve, Gabon. Phil. Trans. R. Soc. Lond. B 334: 179–186.Google Scholar
  33. Tutin, C. E. G., Parnell, R. J., White, L. J. T., and Fernandez, M. (1995). Nest building by lowland gorillas in the Lop´e Reserve, Gabon: Environmental influences and implications for censusing. Int. J. Primatol. 16(1): 53–76.Google Scholar
  34. Yerkes, R.M. (1943). Chimpanzees: A Laboratory Colony. New Haven: Yale University Press.Google Scholar
  35. White, L., Rogers, L., Tutin, C., Williamson, E., and Fernandez, M. (1995). Herbaceous vegetation in different forest types in the Lopé Reserve, Gabon: Implications for keystone food availability. African J. Ecol. 33:124–141.Google Scholar
  36. Williamson, E. A. (1989). Behavioral Ecology of Western Lowland Gorillas in Gabon, Phd Dissertation, University of Sterling (UMI Dissertation Services, Ann Arbor, MI).Google Scholar
  37. Wrogemann, D. (1992).Wild Chimpanzees in Lopé, Gabon: Census Method and Habitat Use, Phd Dissertation, Bremen University, Germany.Google Scholar

Copyright information

© Plenum Publishing Corporation 2002

Authors and Affiliations

  • Patrick T. Mehlman
    • 1
  • Diane M. Doran
    • 1
  1. 1.Department of AnthropologySUNY Stony BrookStony Brook

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