International Journal of Primatology

, Volume 24, Issue 2, pp 281–293

Status and Distribution of Macaca fascicularis umbrosa in the Nicobar Islands, India


  • G. Umapathy
    • Biopsychology LaboratoryUniversity of Mysore
  • Mewa Singh
    • Biopsychology LaboratoryUniversity of Mysore
  • S. M. Mohnot
    • Primate Research Centre

DOI: 10.1023/A:1023045132009

Cite this article as:
Umapathy, G., Singh, M. & Mohnot, S.M. International Journal of Primatology (2003) 24: 281. doi:10.1023/A:1023045132009


We surveyed the distribution and status of the long-tailed macaque (Macaca fascicularis umbrosa) in the Nicobar Islands of India. Long-tailed macaques live on 3 islands: Great Nicobar, Little Nicobar and Katchal. There are a total 788 groups. Group size ranged from 25 to 56 individuals with a mean size of 36. Long-tailed macaques are a multimale-multifemale society. Adult males, adult females and immatures constituted 9.7 per cent, 43.2 per cent and 47.1 per cent of the population, respectively. A fairly high ratio of immatures to adult females indicates a healthy population turnover. Vegetation parameters including tree density, canopy cover, canopy height and basal area indicated a still healthful habitats on all the 3 islands. We observed a few threats to the macaques. Measures should be undertaken to ensure survival of the Nicobar subspecies.

long-tailed macaqueumbrosa subspeciesNicobar Islandsdistribution and statusdemographyconservation
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© Plenum Publishing Corporation 2003