Abstract
The diachronic changes of two gorilla groups in the Kahuzi region are studied. The death of a leader male resulted in the size changes of the two groups. Both groups' ranging areas and patterns are compared with former reports. Inter-group relationships, intra-group interactions and files of procession are described. The social organization and female transfer system of gorillas are discussed, and an explanation for infanticide is presented.
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Caro, T. M., 1976. Observations on the ranging behaviour and daily activity of lone silverback mountain gorillas (Gorilla gorilla beringei).Anim. Behav., 24: 889–897.
Carpenter, C. R., 1965. Field studies of monkeys and apes. In:Primate Behaviour,I. DeVore (ed.), Holt, Rhinehart & Winston, New York, pp. 250–291.
Casimir, M. J., 1975. Feeding ecology and nutrition of an eastern gorilla group in the Mt. Kahuzi region (République du Zaïre).Foila Primatol., 24: 81–136.
————, 1979. An analysis of gorilla nesting sites of the Mt. Kahuzi region (Zaïre).Folia Primatol., 32: 290–308.
———— &E. Butenandt, 1973. Migration and core area shifting in relation to some ecological factors in a mountain gorilla group (Gorilla gorilla beringei) in the Mt. Kahuzi region (République du Zaïre).Z. Tierpsychol., 33: 514–522.
Fossey, D., 1972. Vocalizations of the mountain gorilla (Gorilla gorilla beringei).Anim. Behav., 20: 36–53.
————, 1974. Observations on the home range of one group of the mountain gorilla (Gorilla gorilla beringei).Anim. Behav., 22: 568–581.
————, 1979. Development of the mountain gorilla (Gorilla gorilla beringei): The first thirty-six months. In:The Great Apes,D. A. Hamburg &E. R. McCown (eds.), Benjamin/Cummings, Menlo Park, California, pp. 139–185.
Goodall, A. G., 1977. Aspect of the feeding behaviour of a mountain gorilla group (Gorilla gorilla beringei) in the Tshibinda-Kahuzi region (Zaïre). In:Primate Ecology: Studies of Feeding and Ranging Behaviour in Lemurs, Monkeys and Apes,T. H. Clutton-Brock (ed.), Academic Press, London, pp. 449–479.
————, 1979.The Wandering Gorillas. William Collins Sons, London.
Harcourt, A. H., 1979a. Contrasts between male relationships in wild gorilla groups.Behav. Ecol. Sociobiol., 5: 39–49.
————, 1979b. Social relationships between adult male and female mountain gorillas in the wild.Anim. Behav., 27: 325–342.
————,K. J. Stewart &D. Fossey, 1976. Male emigration and female transfer in wild mountain gorillas.Nature, Lond., 263: 226–227.
Itani, J., 1977. Evolution of primate social structure.J. Human Evol., 6: 235–243.
————, 1980. Social structure of African great apes.J. Reprod. Fert., Suppl., 28: 33–41.
————, 1982. La vie sociale des grands singes.La Recherche, 13 (134): 744–751.
———— &A. Suzuki, 1967. The social unit of chimpanzees.Primates, 8: 355–381.
Kano, T., 1982. The social group of pygmy chimpanzees (Pan paniscus) of Wamba.Primates, 23: 171–188.
Kawai, M. &H. Mizuhara, 1959. An ecological study on the wild mountain gorilla (Gorilla gorilla beringei).Primates, 2: 1–42.
Kawanaka, K. &T. Nishida, 1975. Recent advances in the study of inter-unit-group relationships and social structure of wild chimpanzees of the Mahali Mountains. In:The Proceedings from the Symposia of the 5th Congress of the International Primatological Society, Nagoya, Japan, August 1974,S. Kondo,M. Kawai,A. Ehara &S. Kawamura (eds.), Japan Science Press, Tokyo, pp. 173–189.
Kitamura, K., 1983. Pygmy chimpanzee association patterns in ranging.Primates, 24: 1–12.
Lawick-Goodall, J. van, 1975. The behaviour of the chimpanzee. In:Hominization und Verhalten,I. Eibl-Eibesfeldt (ed.), Gustav Fischer Verlag, Stuttgart, pp. 56–100.
Lyon, L., 1975. The saving of the gorilla.Africana, 5(9): 11–23.
MacKinnon, J., 1978.The Ape within Us. William Collins Sons, London.
Merfield, F. &H. Miller, 1956.Gorilla Hunter. Farrer Strams, New York.
Murnyak, D. F., 1981. Censusing the gorillas in Kahuzi-Biega National Park.Biological Conservation, 21: 163–176.
Nishida, T., 1966. A sociological study of solitary male monkeys.Primates, 7: 141–204.
————, 1979. The social structure of chimpanzees of the Mahale Mountains. In:The Great Apes,D. A. Hamburg &E. R. McCown (eds.), Benjamin/Cummings, Menlo Park, California, pp. 55–71.
Packer, C., 1975. Male transfer in Olive baboons.Nature, Lond., 255: 219–220.
Pusey, A., 1979. Intercommunity transfer of chimpanzees in Gombe National Park. In:The Great Apes,D. A. Hamburg &E. R. McCown (eds.), Benjamin/Cummings, Menlo Park, California, pp. 465–479.
Schaller, G. B., 1963.The Mountain Gorilla: Ecology and Behavior. Univ. of Chicago Press, Chicago.
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Financed by a Grant-in-Aid for Overseas Scientific Research from the Ministry of Education, Science and Culture, Japan, and conducted as part of academic cooperation betweenl'Institut de Recherche Scientifique (I.R.S.)du Zaïre and Kyoto University.
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Yamagiwa, J. Diachronic changes in two eastern lowland gorilla groups (Gorilla gorilla graueri) in the Mt. Kahuzi Region, Zaïre. Primates 24, 174–183 (1983). https://doi.org/10.1007/BF02381080
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DOI: https://doi.org/10.1007/BF02381080