The Orangutan: A Social Outsider

A Socio-Ecological Test Case
  • J. A. R. A. M. van Hooff


At first sight, the orangutan may well be the least spectacular of the great apes. In comparison with its African cousins, this solitary creature seems to lead a far less exciting life. Superficially, its social organization is exceptional in comparison with that of other diurnal primates. It is precisely this exceptional characteristic which makes the red ape an interesting test case for socio-ecological theorizing.


Home Range Adult Male Sexual Dimorphism Sperm Competition Female Preference 
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  1. Alexander, R.D., Hoogland, J.L., Howard, R.D., Noonan, K.M. and Sherman, P.W., 1979, Sexual dimorphisms and breeding systems in pinnipeds, ungulates, primates and humans. In Evolutionary Biology and Human Social Behaviour: An Anthropological Perspective (Ed. N.A. Chagnon and W.A. Irons), Belmont Wadsworth, 402-603.Google Scholar
  2. Bearder, S.K., 1987, Lorises, bushbabies, and tarsiers: diverse societies in solitary foragers. In Primate Societies (Eds. B.B. Smuts, D.L. Cheney, R.M. Seyfarth, R.W. Wrangham and T.T. Struhsaker). Chicago, University of Chicago Press, 11–24.Google Scholar
  3. Boekhorst, U.A. te, Schürmann, C.L. and Sugardjito, J., 1990, Residential status and seasonal movements of wild orang-utans in the Gunung Leuser Reserve (Sumatra, Indonesia). Anim. Behav. 39:1098–1109.CrossRefGoogle Scholar
  4. Brandes, G., 1929, Die Backenwulste des Orang-mannes. Zool. Gart. (N.E) 1: 365–368.Google Scholar
  5. Brandes, G., 1931, Das Wachstum der Menschenaffen im Vergleich zu dem des Menschen in Kurven dargestellt. Zool. Gart. (N.F.) 4:339–347.Google Scholar
  6. Dunbar, R.I.M., 1988, Primate Social Systems. London: Croom Helm.CrossRefGoogle Scholar
  7. Galdikas, B.M.F., 1979, Orangutan adaptation at Tanjung Puting Reserve: mating and ecology. In: The Great Apes. (Eds.: D.A. Hamburg and E.R. McCown). New York, Academic Press, 195–233.Google Scholar
  8. Galdikas, B.M.F., 1985, Subadult male orangutan sociality and reproductive behavior at Tanjung Puting. Am. J. Primatol. 8:87–99.CrossRefGoogle Scholar
  9. Harcourt, A.H., Harvey, P.H., Larson, S.G. and Short, R.V., 1981, Testis weight, body weight, and breeding system in primates. Nature 293:55–57.PubMedCrossRefGoogle Scholar
  10. Hoir, D.A., 1975, The Borneo orang-utan: Population structure and dynamics in relationship to ecology and reproductive strategy. In: Primate Behavior: Developments in Field and Laboratory Research 4 (Ed. L.A. Rosenblum), New York, Academic Press, 307–323.Google Scholar
  11. Jones, M.L., 1976, Fact sheet on Orang Utans in captivity (Pongo pygmaeus). Am. Assoc. Zool. Parks Aquar. Newsl., 14.Google Scholar
  12. Kingsley S., 1982, Causes of non-breeding and the development of secondary sexual characteristics in the male orang utan: a hormonal study. In: The Orang Utan, Its Biology and Conservation. (Ed. L.E.M. de Boer), den Haag, Junk, 215-229.Google Scholar
  13. MacKinnon, J., 1974, The behaviour and ecology of wild orang utans (Pongo pygmaeus abelii). Anim. Behav. 22:3–74.CrossRefGoogle Scholar
  14. MacKinnon, J., 1979, Reproductive behaviour in wild orangutan populations. In: The Great Apes (Eds. D.A. Hamburg and E.R. McCown), Menlo Park, Benjamin/Cummings, 256–273.Google Scholar
  15. Mitani, J.C., 1985a, Sexual selection and adult male orang utan long calls. Amm. Behav. 33:272–283.CrossRefGoogle Scholar
  16. Mitani, J.C., 1985b, Mating behaviour of male orang utans in the Kutai Game Reserve, Indonesia. Anim. Behav. 33:922–402.Google Scholar
  17. Mitrasetia, T. and S. Utami, 1994, Male dominance in orangutan (Pongopygmaeus) society. Abstr. XVth Congr. Int. Primatol. Soc, Bali, IndonesiaGoogle Scholar
  18. Moller, A.P., 1988, Ejaculate quality, testes size and sperm competition in primates. J. Hum. Evol. 17:479–488.CrossRefGoogle Scholar
  19. Nadler, R.D. (1982) Reproductive behavior and endocrinology of orang utans. Pp. 231–248 in The Orang Utan. Its Biology and Conservation. L.E.M. de Boer, ed. The Hague, Dr. W. Junk Publ.Google Scholar
  20. Nadler, R.D. (1988) Sexual and reproductive behavior. Pp. 105–116 in Orang-utan Biology. J.H. Schwartz, ed. New York, Oxford University Press.Google Scholar
  21. Nadler, R.D. (1995) Sexual behavior of orangutans (Pongo pygmaeus): basic and applied implications (this volume).Google Scholar
  22. Noe, R., van Schaik, C.P. and van Hooff, J.A.R.A.M., 1991, The market effect, an explanation for pay-off asymmetries among collaborating animals. Ethology 87:97–118.CrossRefGoogle Scholar
  23. Noe, R. and Hammerstein, P., 1994, Biological markets: supply and demand determine the effect of partner choice in cooperation, mutualism and mating. Behav. Ecol. Sociobiol., in press.Google Scholar
  24. Rijksen, H.D., 1978, A Field Study of Sumatran Orang Utans (Pongopygmaeus abelii, Lesson 1827), Ecology, Behaviour and Conservation, 78–2. Wageningen, H. Veenman and Zonen B.V.Google Scholar
  25. Rodman, P.S., 1973, Population composition and adaptive organization among orang-utans of the Kutai Reserve. In: Comparative Ecology and Behaviour of Primates (Eds. R.R Michael and J.H. Crook), London, Academic Press, 171–209.Google Scholar
  26. Rodman, P.S., 1979, Individual activity patterns and the solitary nature of orangutans. In: The Great Apes (Eds. D.A. Hamburg and E.R. McCown. Menlo Park, Benjamin/Cummings, 234–255.Google Scholar
  27. Rodman, P.S. and Mitani, J.C., 1987, Orang-utans: sexual dimorphism in a solitary species. In: Primate Societies (Eds. B.B. Smuts, D.L. Cheney, R.M. Seyfarth, R.W. Wrangham and T.T. Struhsaker). Chicago, University of Chicago Press, 146–154.Google Scholar
  28. Schürmann, C.L., 1982, Mating behaviour of wild orangutans. In: The Orang utan: Its Biology and Conservation (Ed. L. de Boer), Den Haag, Junk, 271–286.Google Scholar
  29. Schürmann, C.L. and van Hooff, J.A.R.A.M., 1986, Reproductive strategies of the orang-utan: new data and a reconsideration of existing socio-sexual models. Int. J. Primatol. 7:265–287.CrossRefGoogle Scholar
  30. Seitz, A., 1969, Notes on the body weights of new-born and young orang-utans. Int. Zoo Yb. 9:81–84.CrossRefGoogle Scholar
  31. Smuts, B.B., 1985, Sex and Friendship in Baboons (Ed. Hawthorne). Aldine, New York.Google Scholar
  32. Smuts, B.B., 1987, Sexual competition and mate choice. In: Primate Societies (Ed. B.B. Smuts, D.L. Cheney, R.M. Seyfarth, R.W. Wrangham and T.T. Struhsaker), Chicago, University of Chicago Press, 385–399.Google Scholar
  33. Smuts, B.B. and Smuts, R.W., 1993, Male aggression and sexual coercion of females in nonhuman primates and other mammals: evidence and theoretical implications. Adv. Study Behav. 22:1–63.CrossRefGoogle Scholar
  34. Sugardjito, J., te Boekhorst, U.A. and van Hooff, J.A.R.A.M., 1987, Ecological constraints on the grouping of wild orang-utans (Pongo pygmaeus) in the Gunung Leuser National Park, Indonesia. Int. J. Primatol 8:17–41.CrossRefGoogle Scholar
  35. Suzuki, A., 1989, Socio-ecological studies of orangutans and primates in Kutai National Park, East Kalimantan in 1988-1989. Kyoto Univ. Overseas Res. Rep. of Studies on Asian Nonhuman Primates, 7:1–42.Google Scholar
  36. Utami, S. and Mitra Setia, T., 1995, (this volume). Google Scholar
  37. van Hooff, J.A.R.A.M., 1988, Sociality in primates: a compromise of ecological and social adaptation strategies. In Perspectives in the Study of Primates (Ed. A. Tartabini and M.L. Genta), DeRose, Cosenza, 9–23.Google Scholar
  38. van Hooff, J.A.R.A.M., 1992, Competing for progeny: the socioecology of primate mating systems. In: Sex Matters, (Eds.: W. Bezemer, P. Cohen-Kettenis, K. Slob and N. van Son-Schoones), Amsterdam, Elsevier Science Publ., 93–96.Google Scholar
  39. van Hooff, J.A.R.A.M. and C.P. van Schaik, 1992, Cooperation in competition: the ecology of primate bonds. In: Coalitions and Alliances in Humans and Other Animals. (Eds.: S. Harcourt and F.B.M. de Waal), Oxford, Oxford Univ. Press, 357–390.Google Scholar
  40. van Hooff, J.A.R.A.M. and C.P. van Schaik, 1995, Male Bonds: Afilliative relationships among nonhuman primate males. Behaviour 130: 309–338.CrossRefGoogle Scholar
  41. van Schaik, C.P., 1983, Why are diurnal primates living in groups? Behaviour 87:120–44.CrossRefGoogle Scholar
  42. van Schaik, C.P., 1989, The ecology of social relationships amongst female primates. In: Comparative Socioecology, the Behavioural Ecology of Humans and Other Mammals (Ed. V. Standen and G.R. A. Foley). Oxford, Blackwell Scientific Publications, 195–218.Google Scholar
  43. van Schaik, C.P. and van Hooff, J.A.R.A.M., 1983, On the ultimate causes of primate social systems. Behaviour 85:91–117.CrossRefGoogle Scholar
  44. van Schaik, C.P. and Dunbar, R. I. M., 1990, The evolution of monogamy in large primates: a new hypothesis and some crucial tests. Behaviour 115:30–62.CrossRefGoogle Scholar
  45. van Schaik, C.P. and van Noordwijk, M. A., 1988, Scramble and contest among female long-tailed macaques in a Sumatran rain forest. Behaviour 105: 77–98.CrossRefGoogle Scholar
  46. Wrangham, R.W., 1979, On the evolution of ape social systems. Soc. Sci. Inform. 18: 335–368.CrossRefGoogle Scholar
  47. Wrangham, R.W., 1980, An ecological model of female-bonded primate groups. Behaviour 75:262–300.CrossRefGoogle Scholar
  48. Wrangham, R.W., 1987, Evolution of social structure. In: Primate Societies (Ed. B.B. Smuts, D.L. Cheney, R.M. Seyfarth, R.W. Wrangham and T.T. Struhsaker), Chicago, University of Chicago Press, 282–296.Google Scholar

Copyright information

© Springer Science+Business Media New York 1995

Authors and Affiliations

  • J. A. R. A. M. van Hooff
    • 1
  1. 1.Ethologie and Socio-EcologieUniversiteit UtrechtUtrechtNetherlands

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