International Journal of Primatology

, Volume 4, Issue 1, pp 1–31 | Cite as

An ecological study of the pygmy chimpanzees (Pan paniscus) of Yalosidi, Republic of Zaire

  • Takayoshi Kano


The pygmy chimpanzees of Yalosidi, near the southeastern limit of the range of this species, differ in group size, food habit, nesting behavior, response to humans, etc., from those of other localities (Wamba, Lomako, and Lake Tumba). It is inferred that the pygmy chimpanzee has a wide range of ecological variation. A comprehensive use of the habitat was characteristic of the Yalosidi pygmy chimpanzees. Every stratum of every vegetation type in their habitat was used by them for feeding, resting, or sleeping. The wide ecological niche of pygmy chimpanzees probably permits their survival in competition with other nonhuman primates of Yalosidi, which are more agile but confined to more limited niches.

Key words

Pan paniscus ecology food habit nesting behavior social behavior 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. Badrian, A., and Badrian, N. (1977). Pygmy chimpanzees.Oryx 12: 463–468.Google Scholar
  2. Badrian, A., Badrian, N., and Susman, R. L. (1981). Preliminary observations on the feeding behavior ofPan paniscus in the Lomako forest of central Zaire.Primates 22(2): 173–181.CrossRefGoogle Scholar
  3. Coolidge, H. J., Jr. (1933).Pan paniscus: pygmy chimpanzee from south of the Congo River.Am. J. Phys. Anthropol. 18: 1–59.CrossRefGoogle Scholar
  4. éverard, C. (1968). Recherches écologiques sur le peuplement forestier des sols hydro-morphes de la cuvette central congolaise.Publ. Ineac Bruxelles Ser. Sci. 100.Google Scholar
  5. Goodall, J. (1962). Nest building behavior in the free ranging chimpanzees.Ann. N. Y. Acad. Sci. 102(2): 455–467.PubMedCrossRefGoogle Scholar
  6. Goodall, J. van Lawick (1968). The behaviour of free-living chimpanzees in the Gombe Stream Reserve.Anim. Behav. Monogr. 1: 161–311.Google Scholar
  7. Horn, A. D. (1979). The taxonomic status of the bonobo chimpanzee.Am. J. Phys. Anthropol. 51: 273–282.CrossRefGoogle Scholar
  8. Horn, A. D. (1980). Some observations on the ecology of the bonobo chimpanzee (Pan paniscus, Schwarz 1929) near Lake Tumba, Zaire.Folia primatol. 34(3-4): 145–288.PubMedCrossRefGoogle Scholar
  9. Izawa, K., and Itani, J. (1966). Chimpanzees in Kasakati basin, Tanganyika. (1) Ecological study in rainy season 1963-1964.Kyoto Univ. Afr. Stud. 1: 73–156.Google Scholar
  10. Kano, T. (1971). The chimpanzees of Filabanga, western Tanzania.Primates 12(3-4): 229–246.CrossRefGoogle Scholar
  11. Kano, T. (1979). A pilot study on the ecology of pygmy chimpanzees,Pan paniscus. In Hamburg, D. A., and McCown, E. R. (eds.),The Great Apes, Benjamin, Menlo Park, Calif., pp. 123–135.Google Scholar
  12. Kano, T. (1980). Social behavior of wild pygmy chimpanzees (Pan paniscus) of Wamba: A preliminary report.J. Hum. Evol. 9: 243–260.CrossRefGoogle Scholar
  13. Kano, T. (1982). The social group of pygmy chimpanzees (Pan paniscus) of Wamba.Primates 23(2): 171–188.CrossRefGoogle Scholar
  14. Kitamura, K. (1983). Pygmy chimpanzee association patterns in ranging.Primates 24(1): 1–12.CrossRefGoogle Scholar
  15. Kuroda, S. (1979). Grouping of the pygmy chimpanzees.Primates 20(2): 161–183.CrossRefGoogle Scholar
  16. Kuroda, S. (1980). Social behavior of the pygmy chimpanzees.Primates 21(2): 181–197.CrossRefGoogle Scholar
  17. Nishida, T. (1972). Preliminary information of the pygmy chimpanzees (Pan paniscus) of the Congo basin.Primates 13: 415–425.CrossRefGoogle Scholar
  18. Schaller, G. B. (1963).The Mountain Gorilla, University of Chicago Press, Chicago.Google Scholar
  19. Suzuki, A. (1969). An ecological study of chimpanzees in a savanna woodland.Primates 10(2): 103–148.CrossRefGoogle Scholar
  20. Uehara, S. (1982). Seasonal changes in the techniques employed by wild chimpanzees in the Mahale Mountains, Tanzania, to feed on termites (Pseudacanthotermes spiniger). Folia primatol. 37: 44–76.PubMedGoogle Scholar

Copyright information

© Plenum Publishing Corporation 1983

Authors and Affiliations

  • Takayoshi Kano
    • 1
  1. 1.Department of Health Sciences, School of MedicineUniversity of the RyukyusOkinawaJapan

Personalised recommendations