Primates

, 40:487 | Cite as

Spontaneous use of sticks as tools by captive gorillas (Gorilla gorilla gorilla)

  • Masayuki Nakamichi
Article

Abstract

The present report describes the spontaneous use of sticks, as tools by young adult gorillas (Gorilla gorilla gorilla) in a social group at the San Diego Wild Animal Park, CA, USA. Three 8-year-old gorillas (one female and two males) threw sticks into the foliage of trees, which the gorillas could not climb due to electric wire, to knock down leaves and seeds. Two of the three gorillas selected sticks that were more suitable (i.e. longer or thicker sticks) for throwing. Moreover, they looked up at the target (i.e. the foliage of the tree) before throwing and grasped the stick at a position appropriate, for throwing (i. e. the end of the stick). They were more likely to throw sticks when particular adult group members were not nearby. These two gorillas also pulled branches of trees toward themselves by using sticks to capture them (branch-pulling), and one of these two beat a branch with a stick to knock down leaves and seeds (branch-beating). One of these two gorillas used much longer sticks for branch-pulling than for stick-throwing, indicating that he was capable of task-dependent selection of sticks. Analyzing the spontaneous use of sticks as tools by gorillas in captivity can lead to a better understanding of not only their cognitive ability but also of their social relationships which may otherwise be concealed.

Key Words

Gorilla gorilla gorilla Spontaneous tool use Stick-throwing Branch-pulling Branch-beating Social relationships 

References

  1. Boesch, C.;Boesch, H. 1983. Optimisation of nut-cracking with natural hammers by wild chimpanzees.Behaviour, 83: 265–286.Google Scholar
  2. Fontaine, B.;Moisson, P. Y.;Wickings, E. J. 1995. Observations of spontaneous tool making and tool use in a captive group of western lowland gorillas (Gorilla gorilla gorilla).Folia Primatol., 65: 219–223.Google Scholar
  3. Fossey, D. 1983.Gorillas in the Mist. Houghton Mifflin, New York.Google Scholar
  4. Fox, E. A.;Sitompul, A. F.;van Schaik, C. P. 1999. Intelligent tool use in wild Sumatran orangutans. In:The Mentality of Gorillas and Orangutans,Parker,H. L.;Miles,H. L.;Mitchell,R. W. (eds.), Cambridge Univ. Press, Cambridge. (in press).Google Scholar
  5. Furuichi, T. 1989. Social interactions and the life history of femalePan paniscus in Wamba, Zaire.Int. J. Primatol., 10: 173–197.Google Scholar
  6. Goodall, J. 1964. Tool-using and aimed throwing in a community of free-living chimpanzees.Nature, 201: 1264–1266.PubMedCrossRefGoogle Scholar
  7. Goodall, J. v. L. 1968. The behaviour of free-ranging chimpanzees in the Gombe Stream Reserve.Anim. Behav. Monogr., 1: 161–311.Google Scholar
  8. Harcourt, A. H. 1979. Social relationships among female mountain gorillas.Anim. Behav., 27: 251–264.CrossRefGoogle Scholar
  9. Ingmanson, E. J. 1996. Tool-using behaviour in wildPan paniscus: social and ecological considerations. In:Reaching into Thought: The Minds of The Great Apes,Russon,A. E.;Bard,K. A.;Parker,S. T. (eds.), Cambridge Univ. Press, Cambridge, pp. 190–210.Google Scholar
  10. Itani, J.;Nishimura, A. 1973. The study of infrahuman culture in Japan: a review. In:Precultural Primate Behavior,Menzel,E. W. (ed.), Karger, Basel, pp. 26–50.Google Scholar
  11. Kano, T. 1992.The Last Ape: Behavior and Ecology of Pygmy Chimpanzees. Stanford Univ. Press, Stanford.Google Scholar
  12. Kawamura, S. 1959. The process of sub-culture propagation among Japanese macaques.Primates, 2: 43–60.CrossRefGoogle Scholar
  13. Kitahara-Frisch, J.;Norikoshi, K. 1982. Spontaneous sponge-making in captive chimpanzees.J. Human Evol., 11: 41–47.CrossRefGoogle Scholar
  14. Kortland, A. 1965. How do chimpanzees use weapons when fighting leopards?Yrbk. Amer. Philos. Soc. (1965), 327–332.Google Scholar
  15. Matsuzawa, T. 1994. Field experiments on use of stone tools by chimpanzees in the wild. In:Chimpanzee Culture,Wrangham,R.;McGrew,W.;de Waal,F.;Heltne,P. (eds.), Harvard Univ. Press, Cambridge, Massachusetts, pp. 351–370.Google Scholar
  16. Nakamichi, M. 1998. Stick throwing by gorillas (Gorilla gorilla gorilla) at the San Diego Wild Animal Park,Folia Primatol., 69: 291–295.PubMedCrossRefGoogle Scholar
  17. Nakamichi, M.;Kato, E.;Kojima, Y.;Itoigawa, N. 1998. Carrying and washing of grass roots by freeranging Japanese macaques at Katsuyama.Folia Primatol., 69: 35–40.PubMedCrossRefGoogle Scholar
  18. Nash, V. J. 1982. Tool use by captive chimpanzees at an artificial termite mound.Zoo, Biol. 1: 211–221.CrossRefGoogle Scholar
  19. Natale, F.;Poti', P.;Spinozzi, G. 1988. Development of tool use in a macaque and a gorilla.Primates, 29: 413–416.CrossRefGoogle Scholar
  20. Nishida, T. 1973. The ant-gathering behaviour by the use of tools among wild chimpanzees of the Mahali Mountains.J. Human Evol., 2: 357–370.CrossRefGoogle Scholar
  21. Nishida, T. 1987. Local traditions and cultural transmission. In:Primate Societies,Smuts,B. B.;Cheney,D. L.;Seyfarth,R. M.;Wrangham,R. W.;Struhsaker,T. T. (eds.), The Univ. of Chicago Press, Chicago, pp. 462–474.Google Scholar
  22. van Schaik, C. P.;Fox, E. A.;Sitompul, A. F. 1996. Manufacture and use of tools in wild Sumatran orangutans.Naturwissenschaften, 83: 186–188.PubMedCrossRefGoogle Scholar
  23. Stewart, K. J.;Harcourt, A. H. 1987., Gorillas: variation in female relationships. In:Primate Societies,Smuts,B. B.;Cheney,D. L.;Seyfarth,R. M.;Wrangham,R. W.;Struhsaker,T. T. (eds.), The Univ. of Chicago Press, Chicago, pp. 155–164.Google Scholar
  24. Sugiyama, Y. 1994. Tool use by wild chimpanzees.Nature 367: 327.PubMedCrossRefGoogle Scholar
  25. Sugiyama, Y. 1995. Tool-use for catching ants by chimpanzees at Bossou and Monts Nimba, West Africa.Primates, 36: 193–205.CrossRefGoogle Scholar
  26. Sugiyama, Y.;Koman, J. 1979. Tool-using and-making behavior in wild chimpanzees at Bossou, Guinea.Primates, 20: 513–524.CrossRefGoogle Scholar
  27. Suzuki, S.;Kuroda, S.;Nishihara, T. 1995. Tool-set for termite-fishing by chimpanzees in the Ndoki Forest, Congo.Behaviour, 132: 219–235.Google Scholar
  28. Takeshita, H.;van Hooff, J. A. R. A. M. 1996. Tool use by chimpanzees (Pan troglodytes) of the Arnhem Zoo community.Jpn. Psychol. Res., 38: 163–173.CrossRefGoogle Scholar
  29. Watts, D. P. 1990. Ecology of gorillas and its relation to female transfer in mountain gorillas.Int. J. Primatol., 11: 21–45.CrossRefGoogle Scholar
  30. White, F. J. 1992. Pygmy chimpanzee social organization: variation with party size and between study sites.Amer. J. Primatol., 26: 203–214.CrossRefGoogle Scholar
  31. Wood, R. J. 1984. Spontaneous use of sticks by gorillas at Howletts, Zoo Park, England.Int. Zoo News 31: 13–18.Google Scholar
  32. Yamagiwa, J. 1987. Intra-and inter-group interactions of an all-male group, of Virunga Mountain gorillas (Gorilla gorilla beringei).Primates, 28: 1–30.CrossRefGoogle Scholar
  33. Yamakoshi, G.;Sugiyama, Y. 1995. Pestle-pounding behavior of wild chimpanzees at Bossou, Guinea: a newly observed tool-using behavior.Primates, 36: 489–500.CrossRefGoogle Scholar

Copyright information

© Japan Monkey Centre 1999

Authors and Affiliations

  • Masayuki Nakamichi
    • 1
  1. 1.Laboratory of Ethological Studies, Faculty of Human SciencesOsaka UniversityOsakaJapan

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