International Journal of Primatology

, Volume 22, Issue 2, pp 287–324 | Cite as

Food Resource Characteristics in Two Nocturnal Lemurs with Different Social Behavior: Avahi occidentalis and Lepilemur edwardsi

  • Urs Thalmann


I present results from a comparative field study on the feeding behavior of the gregarious Avahi occidentalis and the solitary-but-social Lepilemur edwardsi to evaluate hypotheses relating to social organization and food resources. While Avahi and Lepilemur are both nocturnal, have comparable body weights and positional behaviors, and are both folivorous, they differ in their social organization. Therefore, they present an ideal model for assessing food resource characteristics through comparisons of food selection in both species with regard to forest composition. The monogamous Avahi tend to select under-represented resources. They are repeatedly exploited, which suggests that their location must be known. It is worthwhile and probably imperative to defend those resources. Such defense imposes ranging limitations on male Avahi. Females may prefer familiar mates that will share their knowledge of resource location and defend the resources. A stable monogamous pattern could be the optimal strategy. In contrast, food selection by Lepilemur is based on common resources to a higher degree, but they show a lower degree of exploitation. Lepilemur males would be less restricted and could potentially opt for a different strategy, e.g., a dispersed harem. It is unclear whether this strategy is realized or not. I discuss other possible correlates of monogamy—infanticide protection, predation avoidance—but the gregarious pattern in Avahi may best be seen as a retention, and its nocturnal activity as a secondary adaptation.

ecology food resources monogamy Avahi Lepilemur 


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  1. Barlow, G. W. (1987). Monogamy in relation to resources. In Slobodchikoff, C. N. (ed.), The Ecology of Social Behavior, Academic Press, New York, pp. 55–77.Google Scholar
  2. Brower, J. E., Zar, J. H., and von Ende, C. N. (1990). Field and Laboratory Methods for General Ecology (3rd ed.), Wm. C. Brown Publishers, Dubuque (USA).Google Scholar
  3. Charles-Dominique, P., and Hladik, C. M. (1971). Le Lepilémur du sud de Madagascar: Ecologie, alimentation et vie sociale. Terre et Vie 1: 3–66.Google Scholar
  4. Charles-Dominique, P., and Petter, J.-J. (1980). Ecology and social life of Phaner furcifer. In Charles-Dominique, P., Cooper, H. M., Hladik, A., Hladik, C. M., Pages, E., Pariente, G. F., Petter-Rousseaux, A., Petter, J.-J., and Schilling, A. (eds.), Nocturnal Malagasy Primates, Academic Press, New York, pp. 75–96.Google Scholar
  5. Clutton-Brock, T. H. (1989). Mammalian mating systems. Proc.Roy. Soc. Lond.B 236: 339–372.Google Scholar
  6. Clutton-Brock, T. H., and Harvey, P. H. (1978). Mammals, resources and reproductive strategies. Nature London 273: 191–195.Google Scholar
  7. Crook, J. H., and Gartlan, J. S. (1966). Evolution of primate societies. Nature London 210: 1200–1203.Google Scholar
  8. Curtis, D. J. (1997). The Mongoose Lemur (Eulemur mongoz): A Study in Behaviour and Ecology. Ph.D. Thesis, University of Zurich, Zurich (Switzerland).Google Scholar
  9. Davies, N. B. (1991). Mating systems. In Krebs, J. R., and Davies, N. B. (eds.), Behavioural Ecology (3rd ed.), Blackwell Scientific Publications, Oxford, pp. 263–294.Google Scholar
  10. Dunbar, R. I. M. (1988). Primate Social Systems. Croom Helm, London.Google Scholar
  11. Eisenberg, J. F., Muckenhirn, N. A., and Rudran, R. (1972). The relation between ecology and social structure in primates. Science 176: 863–874.Google Scholar
  12. Fietz, J. (1999). Monogamy as a rule rather than exception in nocturnal lemurs: The case of the fat-tailed dwarf lemur, Cheirogaleus medius. Ethology 105: 259–272.Google Scholar
  13. Fuentes, A. (1999). Re-evaluating primate monogamy. Am. Anthropol. 100: 890–907.Google Scholar
  14. Ganzhorn, J. U. (1988). Food partitioning among Malagasy primates. Oecologia (Berlin) 75: 436–450.Google Scholar
  15. Ganzhorn, J. U. (1993). Flexibility and constraints of Lepilemur ecology. In Kappeler, P. M., and Ganzhorn, J. U. (eds.), Lemur Social Systems and Their Ecological Basis, Plenum Press, New York, pp. 153–165.Google Scholar
  16. Ganzhorn, J. U., Abraham, J. P., and Razanahoera-Rakotomalala, M. (1985). Some aspects of the natural history and food selection of Avahi laniger. Primates 26: 452–463.Google Scholar
  17. Ganzhorn, J. U., and Kappeler, P. M. (1996). Lemurs of the Kirindy forest. Primate Report (Special Issue) 44(1): 257–274.Google Scholar
  18. Harcourt, C. (1991). Diet and behavior of a nocturnal lemur, Avahi laniger, in the wild. J. Zool. 223: 667–674.Google Scholar
  19. Harcourt, C., and Thornback, J. (1990). Lemurs of Madagascar and the Comoros. The IUCN Red Data Book. IUCN, Gland (Switzerland) and Cambridge (UK).Google Scholar
  20. Harcourt, C. S., and Nash, L. (1986). Social organization of galagos in Kenyan coastal forests: I. Galago zanzibaricus. Am. J. Primatol. 10: 339–355.Google Scholar
  21. Hladik, C. M. (1978). Adaptive strategies of primates in relation to leaf-eating. In Montgomery, G.G. (ed.), ArborealFolivores, Smithsonian Institution Press, Washington DC, pp. 373–395.Google Scholar
  22. Hladik, C.M. (1980). The dry forest of the West Coast of Madagascar: Climate, phenology, and food available for prosimians. In Charles-Dominique, P., Cooper, H. M., Hladik, A., Hladik, C. M., Pages, E., Pariente, G. F., Petter-Rousseaux, A., Petter, J.-J., and Schilling, A. (eds.), Nocturnal Malagasy Primates, Academic Press, New York, pp. 3–40.Google Scholar
  23. Hladik, C. M., and Charles-Dominique, P. (1974). The behavior and ecology of the sportive lemur (Lepilemur mustelinus) in relation to its dietary peculiarities. In Martin, R. D., Doyle, G. A., and Walker, A. C. (eds.), Prosimian Biology, Duckworth, London, pp. 23–37.Google Scholar
  24. Hladik, C. M., Charles-Dominique, P., and Petter, J.-J. (1980). Feeding strategies of five nocturnal prosimians in the dry forest of the west coast of Madagascar. In Charles-Dominique, P., Cooper, H. M., Hladik, A., Hladik, C. M., Pages, E., Pariente, G. F., Petter-Rousseaux, A., Petter, J.-J., and Schilling, A. (eds.), Nocturnal Malagasy Primates, Academic Press, New York, pp. 41–73.Google Scholar
  25. Janson, C. H. (1992). Evolutionary ecology of primate social structure. In Smith, E. A., and Winterhalder, B. (eds.), Evolutionary Ecology and Human Behavior, Aldine de Gruyter, New York, pp. 95–130.Google Scholar
  26. Jolly, A. (1998). Pair-bonding, female aggression and the evolution of lemur societies. Folia Primatol. 69(suppl. 1): 1–13.Google Scholar
  27. Kappeler, P.M. (1997). Determinants of primate social organization: comparative evidence and new insights from Malagasy lemurs. Biol. Rev. Camb. Soc. Zool. 72: 111–151.Google Scholar
  28. Kleiman, D. G. (1977). Monogamy in mammals. Quart. Rev. Biol. 52: 39–69.Google Scholar
  29. Krebs, C. J. (1989). Ecological Methodology. Harper and Row, New York.Google Scholar
  30. Martin, R. D. (1990). Primate Origins and Evolution: A Phylogenetic Reconstruction. Chapman and Hall, London.Google Scholar
  31. Martin, R. D., Chivers, D. J., MacLarnon, A. M., and Hladik, C. M. (1985). Gastrointestinal allometry in primates and other mammals. In Jungers, W. L. (ed.), Size and Scaling in Primate Biology, Plenum Press, New York, pp. 61–89.Google Scholar
  32. Mitani, J. C., and Rodman, P. S. (1979). Territoriality: The relation of ranging pattern and home range size to defendability, with an analysis of territoriality among primate species. Behav. Ecol. Sociobiol. 15: 241–251.Google Scholar
  33. Müller, A. E. (1998). A preliminary report on the social organization of Cheirogaleus medius (Cheirogaleidae; Primates) in north-west Madagascar. Folia Primatol. 69: 160–166.Google Scholar
  34. Müller, A. E. (1999a). Social organization of the fat-tailed dwarf lemur (Cheirogaleus medius) in northwestern Madagascar. In Rakotosamimanana, B., Rasamimanana, H., Ganzhorn, J. U., and Goodman, S. (eds.), New Directions in Lemur Studies, Plenum Press, New York, pp. 139–158.Google Scholar
  35. Müller, A. E. (1999b). Aspects of social life in the fat-tailed dwarf lemur (Cheirogaleus medius): Inferences from body weights and trapping data. Am. J. Primatol. 49: 265–280.Google Scholar
  36. Müller, A. E., and Thalmann, U. (2000). Origin and evolution of primate social organisation: A reconstruction. Biol. Rev. Cambridge Philos. Soc. 75: 405–435.Google Scholar
  37. Nash, L. T. (1998). Vertical clingers and sleepers: Seasonal influences on the activities and substrate use of Lepilemur leucopus at Beza Mahafaly Special Reserve, Madagascar. Folia Primatol. 68 (suppl. 1): 204–217.Google Scholar
  38. Overdorff, D. J. (1996). Ecological correlates to social structure in two lemur species in Madagascar. Am. J. Phys. Anthropol. 100: 487–506.Google Scholar
  39. Overdorff, D. J. (1998). Are Eulemur species pair-bonded? Social organization and mating strategies in Eulemur fulvus rufus from 1988–1995 in southeast Madagascar. Am. J. Phys. Anthropol. 105: 153–166.Google Scholar
  40. Petter, J.-J., Albignac, R., and Rumpler, Y. (1977). Mammifè res Lémuriens (Primates Prosimiens). ORSTOM/CNRS, Paris.Google Scholar
  41. Pietsch, T. Geschlechtsabhängige Strategien im Ernährungsverhalten und der Habitatnutzung bei braunen Wieselmakis (Lepilemur ruficaudatus). Diploma thesis, University of Hamburg, Hamburg (Germany).Google Scholar
  42. Razanahoera, M. (1988). Comportement alimentaire de deux espè ces sympatriques dans la Forê t d'Ankarafantsika (nord-ouest de Madagascar): Lepilemur edwardsi et Avahi laniger (lémuriens nocturnes). In Rakotovao, L., Barre, V., and Sayer, J. (eds.), L'équilibre des Ecosystè mes Forestiers à Madagascar: Actes d'un Séminaire International, IUCN/UCIN, Gland (Switzerland) and Cambridge, (UK), pp. 96–99.Google Scholar
  43. Robbins, C. T. (1993). Wildlife Feeding and Nutrition (2nd ed.). Academic Press, New York.Google Scholar
  44. Rodman, P. S. (1987). Resources and group sizes in primates. In Slobodchikoff, C. N. (ed.), The Ecology of Social Behavior, Academic Press, New York, pp. 83–108.Google Scholar
  45. Roth, O. (1996). Ecology and Social Behavior of theWoolly Lemur (Avahi laniger), a Nocturnal Malagasy Prosimian. Diploma thesis, University of Basel, Basel (Switzerland).Google Scholar
  46. Rowell, T. E. (1988). The social system of guenons, compared with baboons, macaques, and mangabeys. In Gautier-Hion, A., Bourliére, F., Gautier, J.-P., and Kingdon, J. (eds.), A Primate Radiation: Evolutionary Biology of the African Guenons, Cambridge University Press, Cambridge, pp. 439–451.Google Scholar
  47. Russell, R. J. (1977). The Behavior, Ecology and Environmental Physiology of a Nocturnal Primate, Lepilemur mustelinus (Strepsirhini, Lemuriformes, Lepilemuridae). Ph.D. Thesis, Duke University, Durham (USA).Google Scholar
  48. Rutberg, A. T. (1983). The evolution of monogamy in primates. J. Theor. Biol. 104: 93–112.Google Scholar
  49. Smith, E. P. (1982). Niche breadth, resource availability, and inference. Ecology 63: 1675–1681.Google Scholar
  50. Smuts, B. B., Cheney, D. L., Seyfarth, R. M., Wrangham, R. W., and Struhsaker, T. T. (eds.). (1987). Primate Societies. University of Chicago Press, Chicago.Google Scholar
  51. Sokal, R. R., and Rohlf, F. J. (1981). Biometry.W. H. Freeman and Co., New York.Google Scholar
  52. Sorg, J.-P. (1996). Vernacular and scientific names of plants of the Morondava region. Primate Report (Special Issue) 44(1): 339–346.Google Scholar
  53. Tattersall, I. (1982). The Primates of Madagascar, Columbia University Press, New York.Google Scholar
  54. Terborgh, J., and Janson, C. H. (1986). The socioecology of primate groups. Annual Rev. Ecol. Syst. 17: 111–135.Google Scholar
  55. Thalmann, U. (1998). Sociality in the nocturnal lemurs Avahi and Lepilemur: A comparison. Abstract 064, XVII. Congress of the International Primatological Society, University of Antananarivo, Antananarivo (Madagascar).Google Scholar
  56. Van Schaik, C. P. (1983). Why are diurnal primates living in groups? Behavior 87: 120–140.Google Scholar
  57. Van Schaik, C. P., and Dunbar, R. I. M. (1990). The evolution of monogamy in large primates: A new hypothesis and some crucial tests. Behavior 115: 30–62.Google Scholar
  58. 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.Google Scholar
  59. Warren, R. D., and Crompton, R. H. (1997). A comparative study of the ranging behaviour, activity rhythms and sociality of Lepilemur edwardsi (Primates, Lepilemuridae) and Avahi occidentalis (Primates, Indriidae) at Ampijoroa, Madagascar. J. Zool. 243: 397–415.Google Scholar
  60. Wickler, W., and Seibt, U. (1983). Monogamy: An ambiguous concept. In Bateson, P. (ed.), Mate Choice, Cambridge University Press, Cambridge, pp. 33–50.Google Scholar
  61. Wittenberger, J. F., and Tilson, R. L. (1980). The evolution of monogamy. Annual Rev. Ecol. Syst. 11: 197–232.Google Scholar
  62. Wright, P. C. (1986). Ecological correlates of monogamy in Aotus and Callicebus. In Lee, P. C., and Else, J. G. (eds.), Primate Ecology and Conservation (Vol. 2), Cambridge University Press, Cambridge, pp. 159–167.Google Scholar
  63. Zar, J. H. (1984). Biostatistical Analysis (2nd ed.). Prentice Hall Inc., Englewood Cliffs, New Jersey.Google Scholar

Copyright information

© Plenum Publishing Corporation 2001

Authors and Affiliations

  • Urs Thalmann
    • 1
  1. 1.Anthropological InstituteZurich UniversityZurichSwitzerland

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