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Group Size and Population Structure of Vulnerable Gaur in an Isolated Tropical Deciduous Forest of Eastern India

  • Subrat DebataEmail author
  • Kedar Kumar Swain
Research Article
  • 71 Downloads

Abstract

The group size, age and sex ratio of gaur was studied in the Tropical Deciduous habitat of Kuldiha Wildlife Sanctuary, Odisha, eastern India, during 2012–2013. Gaurs were observed by regular monitoring along the motorable roads and forest trails covering a total 3864 km. The overall mean group size and crowding were 6.92 ± 0.02 (SE) and 6.9 respectively which varied significantly between seasons. The sex ratio was skewed to females and there was an increase in adult male ratio during winter season. Calves were observed throughout the year with a slightly peak during December and January. Compared to the gaur population from other regions of India, the group size range in Kuldiha Wildlife Sanctuary is the smaller one, thus indicating a low population density. Therefore, appropriate management intervention is required for long term conservation of the species.

Keywords

Eastern India Gaur Grouping characteristic Mega herbivore Population structure 

Notes

Acknowledgements

The study was carried out with financial support from the Compensatory Afforestation Fund Management and Planning Authority allotted to Balasore Wildlife Division, Odisha. Local forest staffs are highly acknowledged for their support in field survey. The authors extend special thanks to Manish K. Bakshi for preparing the study area map. The authors declare that they have no conflict of interest.

References

  1. 1.
    Ramesh T, Sankar K, Qureshi Q, Kalle R (2012) Group size, sex and age composition of chital (Axis axis) and sambar (Rusa unicolor) in a deciduous habitat of Western Ghats. Mammal Biol 77:53–59CrossRefGoogle Scholar
  2. 2.
    Pulliam ΗR, Caraco T (1984) Living in groups: is there an optimal group size? In: Pulliam HR, Caraco T (eds) Behavioural ecology: an evolutionary approach. Sinauer Associates, Sunderland, pp 122–147Google Scholar
  3. 3.
    Ramesh T, Sankar K, Qureshi Q, Kalle R (2012) Group size and population structure of megaherbivores (Gaur Bos gaurus and Asian Elephant Elephas maximus) in a deciduous habitat of Western Ghats, India. Mammal Study 37:47–54CrossRefGoogle Scholar
  4. 4.
    Isvaran K (2007) Intraspecific variation in group size in the blackbuck antelope: the roles of habitat structure and forage at different spatial scales. Oecologia 154:435–444CrossRefGoogle Scholar
  5. 5.
    Barrette C (1991) The size of axis deer fluid groups in Wilpattu National Park, Sri Lanka. Mammalia 55:207–220CrossRefGoogle Scholar
  6. 6.
    Sartaj SG, Sankar K, Jhala YV (2010) A study of vigilance behaviour of Chital (Axis axis), examining the determinant of individual and group vigilance for Chital in Pench Tiger Reserve, India. LAMBERT Academic Publishing, LondonGoogle Scholar
  7. 7.
    Ahrestani FS, Heitkonig IMA, Prins HHT (2012) Diet and habitat-niche relationships within an assemblage of large herbivores in a seasonal tropical forest. J Trop Ecol 28:385–394CrossRefGoogle Scholar
  8. 8.
    Stearns SC (1992) The evolution of life histories. Oxford University Press, LondonGoogle Scholar
  9. 9.
    Choudhury A (2002) Distribution and conservation of the Gaur Bos gaurus in the Indian Subcontinent. Mammal Rev 32:199–226CrossRefGoogle Scholar
  10. 10.
    Duckworth JW, Steinmetz R, Timmins RJ, Pattanavibool A, Than Zaw DT, Hedges S (2008) Bos gaurus. The IUCN red list of threatened species. http://www.iucnredlist.org/details/full/2891/0. Accessed 12 Mar 2017
  11. 11.
    Schaller GB (1967) The deer and the tiger: a study of wildlife of India. University of Chicago Press, ChicagoGoogle Scholar
  12. 12.
    Sankar K, Qureshi Q, Pasha MKS, Areendran G (2001) Ecology of gaur Bos gaurus in Pench Tiger Reserve, Madhya Pradesh. Wildlife Institute of India, Dehra DunGoogle Scholar
  13. 13.
    Sankar K, Pabla HS, Patil CK, Nigam P, Qureshi Q, Navaneethan B, Manjrekar M, Virkar PS, Mondal K (2013) Home range, habitat use and food habits of re-introduced Gaur (Bos gaurus gaurus) in Bandhavgarh Tiger Reserve, Central India. Trop Conserv Sci 6:50–69CrossRefGoogle Scholar
  14. 14.
    Karanth KU, Sunquist ME (1992) Population structure, density and biomass of large herbivores in the tropical forests of Nagarahole, India. J Trop Ecol 8:21–35CrossRefGoogle Scholar
  15. 15.
    Vairavel SM (1998) Ecology of Gaur (Bos gaurus H. Smith) with special reference to habitat utilization in Parambikulum Wildlife Sanctuary, Kerala, India. Ph.D. Thesis, Forest Research InstituteGoogle Scholar
  16. 16.
    Jathanna D, Karanth KU, Johnsingh AJT (2003) Estimation of large herbivore densities in the tropical forests of southern India using distance sampling. J Zool 261:285–290CrossRefGoogle Scholar
  17. 17.
    Bhattacharya S, Choudhury A, Biswas GG (1997) A collaborative study on Gaurs (Bos Gaurus H. Smith) in North Bengal, West Bengal. World Wide Fund for Nature, GlandGoogle Scholar
  18. 18.
    Dasgupta S, Sankar K, Gupta AK (2008) Density, group size and sex ratios of Gaur (Bos gaurus H. Smith) in a sub-tropical semi-evergreen forest of north-east India. Indian For 134:1281–1288Google Scholar
  19. 19.
    Shukla R, Khare PK (1998) Food habits of wild ungulates and their competition with livestock in Pench Wildlife Reserve, central India. J Bombay Nat Hist Soc 95:418–421Google Scholar
  20. 20.
    Gad SD, Shyama SK (2009) Studies on the food and feeding habits of Gaur Bos gaurus H. Smith (Mammalia: Artiodactyla: Bovidae) in two protected areas of Goa. J Threat Taxa 1:128–130CrossRefGoogle Scholar
  21. 21.
    Pattanaik C, Reddy CS, Murthy MSR (2010) Geospatial modeling of biological richness in Kuldiha wildlife sanctuary of Orissa, India. J Indian Soc Remote Sens 38:477–485CrossRefGoogle Scholar
  22. 22.
    Sahu HK, Udgata HB, Debata S, Palei HS (2014) Vertebrate fauna of Kuldiha Wildlife Sanctuary. Himalaya Publishing House, MumbaiGoogle Scholar
  23. 23.
    Ahrestani FS, Prins HHT (2011) Age and sex determination of Gaur Bos gaurus (Bovidae). Mammalia 75:151–155CrossRefGoogle Scholar
  24. 24.
    Reiczigel J, Lang Z, Rozsa L, Tothmeresz B (2007) Measure of sociality: two different views of group size. Anim Behav 75:715–721CrossRefGoogle Scholar
  25. 25.
    Lawes MJ, Nanni RF (1993) The density, habitat use and social organisation of dorcas gazelles (Gazella dorcas) in Makhtesh Ramon, Negev Desert, Israel. J Arid Environ 24:177–196CrossRefGoogle Scholar
  26. 26.
    Karanth KU, Sunquist ME (1995) Prey selection by tiger, leopard and dhole in tropical forests. J Anim Ecol 64:439–450CrossRefGoogle Scholar
  27. 27.
    Ramesh T, Snehalatha V, Sankar K, Qureshi Q (2009) Food habits and prey selection of tiger and leopard in Mudumalai Tiger Reserve, Tamil Nadu, India. J Sci Trans Environ Technov 2:170–181CrossRefGoogle Scholar
  28. 28.
    Berger J, Gompper ME (1999) Sex ratios in extant ungulates: products of contemporary predation or past life histories? J Mammal 80:1084–1113CrossRefGoogle Scholar
  29. 29.
    Palei HS, Sahu HK, Nayak AK (2016) Ungulate densities and biomass in the tropical moist deciduous forest of Similipal Tiger Reserve, India. Natl Acad Sci Lett 39:255–258CrossRefGoogle Scholar
  30. 30.
    Allwin B, Balakrishnan S, Kumar NV, Jayathangaraj MG, Vedamanickam S, Gopal S (2016) Prevalence of gastrointestinal parasites in gaur (Bos gaurus) and domestic cattle at interface zones of the Nilgiri Hills, Tamil Nadu, India. J Vet Sci Technol 7:280. doi: 10.4172/2157-7579.1000280 Google Scholar

Copyright information

© The National Academy of Sciences, India 2017

Authors and Affiliations

  1. 1.Department of Biodiversity and Conservation of Natural ResourcesCentral University of OrissaKoraputIndia
  2. 2.Office of Divisional Forest OfficerChandaka Wildlife DivisionBhubaneswarIndia

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