International Journal of Primatology

, Volume 24, Issue 1, pp 33–46 | Cite as

Diet and Feeding Behavior of Mysore Slender Lorises

  • K. A. I. Nekaris
  • D. Tab Rasmussen

Abstract

We studied the feeding ecology of the Mysore slender loris (Loris lydekkerianus lydekkerianus) for 10.5 mo in a dry scrub forest at Ayyalur Interface Forestry Division, Tamil Nadu, South India. We recorded and analyzed 1240 feeding incidents, which indicate that the lorises were almost exclusively faunivorous, with 96% of all feeding events representing animal prey. Of prey items that could be identified (n = 605), 62.9% were ants and termites. Lorises fed on ≥9 orders and 17 families of insects, plus spiders, molluscs, and small vertebrates. Lorises infrequently fed on gums and a legume pod. They usually grabbed prey with one hand, while other appendages firmly held the substrate. Many of the identifiable prey items belong to insect taxa likely to contain toxic chemicals. Consumption of insects inferred to be toxic was accompanied by an elaborate behavioral repertoire of sneezing, slobbering and urine-washing. A high proportion of insects eaten by slender lorises (71%) occurred in patches or aggregations. The utilization of aggregated social insects may have implications for understanding the unusually high degree of gregarious behavior exhibited by the lorises.

insectivory gregariousness Lorisidae India Loris lydekkerianus 

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References

  1. Barrett, E. (1984). The Ecology of Some Nocturnal, Arboreal Mammals in the Rainforests of Peninsular Malaysia. PhD Dissertation, Cambridge University, UK.Google Scholar
  2. Bearder, S. K. (1987). Lorises, bushababies and tarsiers: Diverse societies in solitary foragers. In Smuts, B. B., Cheney, D. L., Seyfarth, R. M., Wrangham, R. W., and Struhsaker, T. T. (Eds.), Primate Societies, University of Chicago Press, Chicago, pp. 11-24.Google Scholar
  3. Charles-Dominique, P. (1977). Ecology and Behaviour of Nocturnal Primates, Duckworth, London.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: Ecology, Physiology and Behaviour, Academic Press, New York, pp. 75-96.Google Scholar
  5. Duckworth, J. W. (1994). Field sighting of the pygmy loris (Nycticebus pygmaeus) in Laos. Folia Primatol. 63: 99-101.Google Scholar
  6. 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. 51-66.Google Scholar
  7. Greegor, D. H. (1980). Diet of the little hairy armadillo, Chaetoprachtus vellerosus, of northwestern Argentina. J. Mammology 61: 331-334.Google Scholar
  8. Guilford, T. (1990). The evolution of aposematism. In Evans, D. L., and Schmidt, J. O. (Eds.), Insect Defenses: Adaptive Mechanisms and Strategies of Prey and Predators, State University of New York Press, Albany, NY, pp. 23-62.Google Scholar
  9. Gursky, S. (1997). Effect of seasonality on the behavior of an insectivorous primate, Tarsius spectrum. Int. J. Primatol, 21: 477-495.Google Scholar
  10. Happold, D., and Happold, M. (1992). Termites as food for the thick-tailed bushbaby (Otolemur crassicaudatus) in Malwi. Folia Primatol. 58: 118-120.Google Scholar
  11. Ilse, D. R. (1955). Olfactory marking and territoriality in two young male lorises, Loris tardigradus lydekkerianus, kept in captivity in Poona. Brit. J. Anim. Behav. 3: 118-120.Google Scholar
  12. Jewell, P. A., and Oates, J. F. (1969). Ecological observations on the lorisoid primates of African lowland rainforest. Zool. Afr. 4: 231-248.Google Scholar
  13. Johnson, J. M. (1984). Diurnal activities of the slender loris, Loris tardigradus, in the Mundanthurai Sanctuary, Tamil Nadu (India). In Roonwal, M. L., Mohnot, S. M., and Rathore, N. S. (Eds.), Current Primate Researches. Jodhpur University Press, Jodhpur, India, pp. 441-447.Google Scholar
  14. Kinnear, N. B. (1919). Notes on the Malabar slender loris (Loris tardigradus lydekkerianus). J. Bombay Nat. Hist. Soc. 26: 836-837.Google Scholar
  15. Montgomery, G. G. (1985). The Evolution and Ecology of Armadillos, Sloths, and Vermilinguas, Smithsonian Institute Press, Washington, DC.Google Scholar
  16. Nekaris K. A. I. (2000). The Socioecology of the Mysore Slender Loris in Dindigul, Tamil Nadu, South India, PhD Thesis, Washington University, St. Louis, Missouri (MO).Google Scholar
  17. Nekaris K. A. I. (2001). Activity budget and positional behavior of the Mysore slender loris (Loris tardigradus lydekkarianus): Implications for “slow climbing” locomotion. Folia Primatol. 72: 228-241Google Scholar
  18. Nekaris K. A. I. (2002). Slender in the night. Nat. History 2(02): 54-59.Google Scholar
  19. Pasteels, J. M., Gregoire, J. C., and Rowell-Rahier, M. (1983). The chemical ecology of defense in arthropods. Annu. Rev. Entomol. 28: 263-289.Google Scholar
  20. Petter, J.-J., and Hladik, C. M. (1970). Observations sur le domaine vital et la densité de population de Loris tardigradus dans les foréts de Ceylon. Mammalia 34: 394-409.Google Scholar
  21. Phillips, W. W. A. (1931). The food of the Ceylon slender loris (Loris tardigradus) in captivity. Spolia Zeylanica 16: 205-208.Google Scholar
  22. Rasmussen, D. T. (1986). Life History and Behavior of Slow Lorises and Slender Lorises. PhD Thesis, Duke University, Durham, NC.Google Scholar
  23. Rasmussen, D. T., and Izard, M. K. (1988). Scaling of growth and life-history traits relative to body size, brain size and metabolic rate in lorises and galagos (Lorisidae, Primates). Amer. J. Phys. Anthropol. 75: 357-367.Google Scholar
  24. Rasmussen, D. T., and Nekaris, K. A. I. (1998). Evolutionary history of the lorisiform primates. Folia Primatol. 69 (Suppl 1): 250-285.Google Scholar
  25. Roonwal, M. L., and Mohnot, S. M. (1977). Primates of South Asia: Ecology, Sociobiology and Behavior, Harvard University Press, Cambridge, MA.Google Scholar
  26. Schmidt, J. O. (1990). Hymenopteran venoms: Striving toward the ultimate defense against vertebrates. In Evans, D. L., and Schmidt, J. O. (Eds.), Insect Defenses: Adaptive Mechanisms and Strategies of Prey and Predators, State University of New York Press, Albany, NY, pp. 387-420.Google Scholar
  27. Schulze, H., and Meier, B. (1995). Behavior of captive Loris tardigradus nordicus: a qualitiative description including some information about morphological bases of behavior. In Alterman, L., Doyle, G. A., and Izard, M. K. (Eds.), Creatures of the Dark: the Nocturnal Prosimians, Plenum Press, New York, pp. 221-249.Google Scholar
  28. Singh, M., Kumar, M. A., Kumara, H. N., and Mohnot, S. M. (2000). Distribution and conservation of slender lorises (Loris tardigradus lydekkarianus) in southern Andra Pradesh, South India. Int. J. Primatol. 21: 721-730.Google Scholar
  29. Singh, M., Lindburgh, D. G., Udhayan, A., Kumar, M. A., and Kumara, H. N. (1999). Status survey of selnder loris, Loris tardigradus tardigradus, in Dindigul, Tamil Nadu, India. Oryx 33: 31-37.Google Scholar
  30. Stapley, L. (1998). The interaction of thorns and symbiotic ants as an effective defence mechanism of swollen-thorn acacias. Oecologia 115: 401-405.Google Scholar
  31. Still, J. (1905). On the loris in captivity. Spolia Zeylanica 3: 155-157.Google Scholar
  32. Subramoniam, S. (1957). Some observations on the habits of the slender loris (Loris tardigradus). J. Bombay Nat. Hist. Soc. 54: 387-398.Google Scholar
  33. Sussman, R. W. (1999). Primate Ecology and Social Structure, Volume 1: Lorises, Lemurs and Tarsiers, Pearson Custom Publishing, Needham Heights, MA.Google Scholar
  34. Tan, C. L., and Drake, J. H. (2001). Evidence of tree gouging and exudate eating in pygmy slow lorises (Nycticebus pygmaeus). Folia Primatol. 72: 37-39.Google Scholar
  35. Vulinec, K. (1990). Collective security: Aggregation by insects as a defense. In Evans, D. L., and Schmidt, J. O. (Eds.), Insect Defenses: Adaptive Mechanisms and Strategies of Prey and Predators, State University of New York Press, Albany, NY, pp. 251-288.Google Scholar
  36. Webb-Peploe, C. G. (1947). Field notes on the mammals of South Tinnevelly, South India. J. Bombay Nat. Hist. Soc. 46: 629-644.Google Scholar
  37. Wiens, F. (1995). Verhaltensbeobachtungen am plumplori, Nycticebus coucang (Primates: Lorisidae) im Freiland. Diplomarbeit, Universit.t Frankfurt am Main (Germany).Google Scholar

Copyright information

© Plenum Publishing Corporation 2003

Authors and Affiliations

  • K. A. I. Nekaris
    • 1
  • D. Tab Rasmussen
    • 1
  1. 1.Department of AnthropologyWashington UniversitySt. Louis

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