USE OF FOREST STRATA BY THE SUMATRAN ORANG-UTANS: A CONSIDERATION OF FUNCTIONAL ASPECTS

JITO SUGARDJITO
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Abstract

Differences in travel height between age-sex classes of the Sumatran orangutans are determined by locomotory efficiency in relation to body weight. The distribution of travel height in relation to resting heights suggests also possible influence of predation. Travel height does hardly restrain diet choice, because differences in diet between sexes are not associated with differences in strata utilization with regard to feeding.

Keywords

ORANG-UTANS,A CONSIDERATlON OF FUNCTIONAL ASPECTS

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References

FLEAGLE.J.C. 1984. Primate locomotion and diet. In: Food acquisition and processing in primates (D.J.CHIVERS; B.A.Wood; and A. Bilsborough,eds.) pp. 105 - 117. Plenum Press, New York.

GALDIKAS.B.M.F. 1978. Orangutans adaptation at Tanjung Puting Reserve, Central Kalimantan. Ph.D. thesis, University of California, Los Angeles.

GALDIKAS.B.M.F. and G. TELEKI. 1981. Variations in Subsistence activities of female and male pongids: New perspectives on the origins of hominid labor division. Current Anthropology, 22: 241 - 256.

GITTINS.S.P. 1983. Use of the forest canopy by the agilegibbon.Folia Primatol.,

: 134-144. TO SUGARDJITO; Use of forest strata 265

MACKINNON, J.R. 1974. The behaviour and ecology of wild orangutans (Pongo pygmaeus)., Anim. Behav,22: 3 -74.

RIJKSEN, H.D. 1978. A field study on Sumatran orang utans (Pongo pygmaeus abelii, Lesson 1827): ecology, behaviour and conservation. ·Ph.D. thesis,University of Wageningen.

RIPLEY, S. 1979. Environmental grain, niche diversification and positional behaviour

in Neogene primates: an evolutionary hypothesis. In:Environment, Behaviour and Morphology Dynamic Interactions in Primates (M.E Morbeck; H. Preuschoft; N. Gomberg, eds.) pp. 37 - 74. Gustav Fiseher, New York

RODMAN, P.S. 1973. Population composition and adaptive organization among orang utans of the Kutai Reserve. In: Ecology and behaviour of primates(R.M. Michael and J.H. Crook eds.) pp. 171 - 209. Academic Press, London.

RODMAN, P.S. 1977. Feeding behaviour of orang utans of the Kutai Nature Reserve, East Kalimantan. In: Primate ecology: Studies of Feeding and Ranging{ Behaviour in

Lemurs, Monkeys and Apes (T.H. Clutton-Brock, ed.) pp. 383 - 413. Academic Press, London.

RODMAN, P.S. 1984. Foraging and social systems of

orangutans and chimpanzees. In: Adaption for foraging in non human primates: contributions to an organismal biology of prosimians, monkeys and apes (P.S. RODMAN and J.G.H CANT, eds.) pp. 54 - 72. Columbian University Press, New York.

SCHAIK, C.P. van 1985. The Socio-ecology of Sumatran long-tailed macaques(Macaca fascicularis) I. The cost of group living. Ph.D. thesis, University of Utrecht.

SCHAIK, C.P. van; ,M.A.van NOORDWIJK;B WARSONO;and E. SUTRIONO. 1983. Party, size and early detection of predators in Sumatran forest primates. Primates, 24: 211 - 221.

SIEGEL, S. 1956. Non-parametric Statistics for the Behavioural Sciences. McGraw-Hill Kogakusha Ltd.,Tokyo.

SUGARDJITO, J. 1982. Locomotor behaviour of the Sumatran orang utan, Pongo pygmaeus abelii at Ketambe, Gunung Leuser National Park. Malay. Nat. J., 35: 57 - 64.

SUGARDJITO, J. 1986. Ecological constraints on the behauiour of Sumatran orang utans (Pongo pygmaeus abelii) in the Gunung Leuser National Park, Indonesia. Ph.D. thesis. University of Utrecht.

SUGARDJITO, J. and J.A.R.A.M VAN HOOFF. 1986. Age-sex class differences in positional behaviour of Sumatran orang utans (Pongo pygmaeus abelii) in the Gunung Leuser National Park, Indonesia. Folio.Primatol., 74:14 - 25.

TEMERIN, LA; BP. WHEATLEY; and P.S. RODMAN. 1984. Body size and foraging in primates. In: Adaptation for foraging in non-human primates contributions to an organismal biology of prosimians, monkeys and apes. (P.S.RODMAN and J.G.H CANT,eds.) pp. 217 - 248. Columbia University Press, New York.

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