Demography of the Barbary Macaque at Ain Kahla in the Moroccan Moyen Atlas

  • John M. Deag


In June 1968 an ideal site was found at Ain Kahla in the Moyen Atlas Mountains of Morocco for a study of the wild Barbary macaque Macaca sylvanus L. (Deag and Crook, 1971; Deag, 1970, 1973, 1974, 1977a, 1977b, 1980a). At this site, in the forest of Sidi M’Guild one of Morocco’s major cedar forests, the monkeys are numerous, entirely dependent on natural food, relatively undisturbed and reasonably easy to observe. The study area has since achieved a greater importance. Its wildness, beauty, nearness to Europe and the fascinating male-baby interactions shown by the monkeys soon attracted others wishing to observe wild primates. It has already seen another major study (Taub, 1971, 1978, 1980) and more are planned. Furthermore, it has been suggested that this forest should be established as one of a series of National Parks for the conservation of Moroccan fauna and flora (Taub, 1975). At Ain Kahla the monkeys live in groups with overlapping home ranges (Deag, 1974) and complex behavioural relationships with neighbouring groups (Deag, 1973). This paper summarizes the demography of the groups, based on a fifteen month field study in 1968–69. The project (which was divided into an initial population study and a later single group study) is described in Deag (1974, 1977b, 1980a).


Home Range Birth Interval Mating Season Birth Season Subadult Male 
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  1. Aldrich-Blake, F.P.G., 1970, Problems of social structure in forest monkeys. In: J.H, Crook (ed.), “Social Behaviour in Birds and Mammals”, pp. 79–102. Academic Press, London.Google Scholar
  2. Burton, F.D. and Sawchuk, L.A., 1982, Birth intervals in M. sylvanus of Gibraltar. Primates 23: 140–144.CrossRefGoogle Scholar
  3. Cabrera, A., 1932, Los mamiferos de Marruecos. Trab. Museo Nac. Cienc. Nat. Ser. Zool. 57: 200–208.Google Scholar
  4. Conway, C.H., and Sade, D.S., 1965, The seasonal spermatogenic cycle in free ranging rhesus monkeys. Folia primatol., 3: 1–12.CrossRefGoogle Scholar
  5. Deag, J.M ., 1970, The Apes of Barbary 30 minute, 16mm colour-sound film. Produced in association with J.H. Crook and the University of Bristol, Audio-Visual Aids Unit. (Available from Audio Visual Services, Pennsylvania State University, PA 16802, USA.)Google Scholar
  6. Deag, J.M., 1973, Intergroup encounters in the wild Barbary macaque Macaca sylvanus L. In: R.P. Michael and J.H. Crook (eds.), “Comparative Ecology and Behaviour of Primates”, pp. 315–373. Academic Press, London.Google Scholar
  7. Deag, J.M., 1974, A study of the social behaviour and ecology of the wild Barbary macaque Macaca sylvanus L. Ph.D. thesis, University of Bristol.Google Scholar
  8. Deag, J.M., 1977a. Aggression and submission in monkey societies. Anim. Behav., 25: 465–474.CrossRefGoogle Scholar
  9. Deag, J.M., 1977b. The status of the Barbary macaque Macaca sylvanus in captivity and factors influencing its distribution in the wild. In: H.S.H. Rainier and G.H. Bourne (eds.), pp. 267–287. Academic Press, New York.Google Scholar
  10. Deag, J.M., 1980a. Interactions between males and unweaned Barbary macaques: testing the agonistic buffering hypothesis. Behaviour, 75: 54–81.CrossRefGoogle Scholar
  11. Deag, J.M., 1980b. “Social Behaviour of Animals”. Edward Arnold, London.Google Scholar
  12. Deag, J.M. and Crook, J.H., 1971, Social behaviour and ‘agonistic buffering’ in the wild Barbary macaque Macaca sylvanus L. Folia primatol., 15: 183–200.CrossRefGoogle Scholar
  13. Dittus, W.P.J., 1977, The social regulation of population density and age-sex distribution in the toque monkey. Behaviour, 63: 281–322.CrossRefGoogle Scholar
  14. Drickamer, L.C., 1974. A ten year summary of reproductive data for free-ranging Macaca mulatta. Folia primatol., 21: 61–80.CrossRefGoogle Scholar
  15. Fa, J.E., 1982, A survey of population and habitat of the Barbary macaque Macaca sylvanus L. in north Morocco. Biological Conservation, 24: 45–66.CrossRefGoogle Scholar
  16. Glick, B.B., 1980, Ontogenic and psychobiological aspects of the mating activities of male Macaca radiata In: Lindburg, D.G. (ed.), “The Macaques: Studies in Ecology, Behavior and Evolution”, pp. 345–369. Van Nostrand Rheinhold, New York.Google Scholar
  17. Harman, C.G., 1932, Studies in the reproduction of the monkey Macacus (Pithecus) rhesus, with special reference to menstruation and pregnancy. Contribution to Embryology, 23: 1–161.Google Scholar
  18. Jolly, A., 1972, “The Evolution of Primate Behaviour”, Macmillan, New York.Google Scholar
  19. Kawai, M., Azuma, S. and Yoshiba, K., 1967, Ecological studies of reproduction in Japanese monkeys (Macaca fuscata ) I: Problems of the birth season. Primates, 8: 35–74.CrossRefGoogle Scholar
  20. Keverne, E.B. and Michael, R.P., 1970, Annual changes in the menstruation of rhesus monkeys. J. Endocr., 48: 669–670.CrossRefGoogle Scholar
  21. Lancaster, J.B. and Lee, R.B., 1965. The annual reproductive cycle in monkeys and apes. In: I. Devore (ed.), “Primate Behaviour” Holt, Rinehart and Winston, New York, 486–513.Google Scholar
  22. Lindburg, D.G., 1969, Rhesus monkeys: mating season mobility of adult males. Science, 166: 1176–1179.CrossRefGoogle Scholar
  23. Lindburg, D.G ., 1971, The rhesus monkey in North India: an ecological and behavioural study. In: L.A. Rosenblum (ed.), “Primate Behaviour” Volume 2, pp.1–106. Academic Press.Google Scholar
  24. Lindburg, D.G, (ed.), 1980, “The Macaques: Studies in Ecology Behavior and Evolution”. Van Nostrand Rheinhold, New York.Google Scholar
  25. MacRoberts, M.H. and MacRoberts, B.R., 1966. The annual reproductive cycle of the Barbary ape (Macaca sylvana ) in Gibraltar. Amer. J. Phys. Anthrop n.s. 25: 299–304.CrossRefGoogle Scholar
  26. Michael, R.P. and Keverne, E.B., 1971, An annual rhythm in the sexual activity of the male rhesis monkey, Macaca mulatta, in the laboratory. J. Reprod. Fert. 25: 95–98.CrossRefGoogle Scholar
  27. Napier, J.R. and Napier, P.H., 1967. “A Handbook of Living Primates”. Academic Press, London.Google Scholar
  28. Nigi, H., 1975, Menstrual cycle and some other aspects of Japanese monkeys (Macaca fuscata ). Primates, 16: 207–216.CrossRefGoogle Scholar
  29. Pujos, A., Les milieux de la cédraie marocaine, Ann. de la Recherche Forestiere au Maroc 8 (text and charts): 1–283 (1964).Google Scholar
  30. Riesen, J.W., Meyer, R.K. and Wolf, R.C., 1971, The effect of season on occurrence of ovulation in the rhesus monkey. Biology of Reproduction, 5: 111–114.Google Scholar
  31. Roonwall, M.L. and Mohnot, S.M., 1977, “Primates of South-Asia”. Harvard University Press, Cambridge, Massachusetts.Google Scholar
  32. Short, R.V ., 1981, Lactation as a reproductive strategy. 11th Hannah Lecture, Hannah Research Institute Report. University of Glasgow, 61–65.Google Scholar
  33. Tanaka, T, and Tokuda, K., 1970, Effect of infant loss on the interbirth interval of Japanese monkeys. Primates, 11: 113–117.CrossRefGoogle Scholar
  34. Taub, D.M., 1975, Geographic distribution and habitat diversity of the Barbary macaque Macaca sylvanus in Morocco and Algeria and their conservation. Unpublished report to the New York Zoological Society, Fauna Preservation Society of Great Britain and the International Union for the Conservation of Nature.Google Scholar
  35. Taub, D.M., 1977, Geographic distribution and habitat diversity of the Barbary macaque Macaca sylvanus L. Folia primatol 27: 108–133.CrossRefGoogle Scholar
  36. Taub, D.M., 1978, Aspects of the biology of the wild Barbary macaque (Primates, Cercopithecinae, Macaca sylvanus L. 1758): Biogeography, the mating system and male-infant associations. Ph.D. thesis, University of California, Davis.Google Scholar
  37. Taub, D.M., 1980, Female choice and mating strategies among wild Barbary macaques (Macaca sylvanus L.). In: Lindburg, D.G. (ed.), “The Macaques. Studies in Ecology, Behavior and Evolution”, pp. 287–344. Van Nostrand Rheinhold, New York.Google Scholar
  38. Trollope, J. and Blurton Jones, N.G., 1975, Aspects of reproduction and reproductive behaviour in Macaca arctoides Primates, 16: 191–205.CrossRefGoogle Scholar
  39. Vandenbergh, J.G. and Vessey, S., 1968, Seasonal breeding of free-ranging rhesus monkeys and related ecological factors. J. Reprod. Fert., 15: 71–79.CrossRefGoogle Scholar
  40. Vessey, S.H. and Morrison, J.A., 1970, Molt in free-ranging rhesus monkeys, Macaca mulatta J. Mammal. 51, 89: 93.Google Scholar
  41. Whiten, A ., 1972, University of Bristol expedition to study the Barbary ape Duplicated report to the Expeditions Society, University of Bristol.Google Scholar
  42. Young, W.C., 1961, The mammalian ovary. In: W.C. Young (ed.), “Sex and Internal Secretions”, 3rd edition. William and Wilkins, Baltimore, 449–496.Google Scholar
  43. Zuckerman, S ., 1931, The menstrual cycle of primates. Part IV, Observations on the lactation period. Proc. Zool. Soc. Lond. 593–602.Google Scholar

Copyright information

© Plenum Publishing Corporation 1984

Authors and Affiliations

  • John M. Deag
    • 1
  1. 1.Department of ZoologyUniversity of EdinburghUK

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