Abstract
Tiger, being a solitary and territorial animal, often tends to move out of protected areas into the surrounding forests. This is especially true in the case of sub-adult animals leading to escalating conflicts and deaths in the surrounding human-dominated landscapes. Unless adequately protected against various human activities, such corridors and surrounding forests will soon disappear, trapping the animals within protected areas with resultant local extinctions. In this paper we ascertain tiger presence, occupancy and numbers in one such partially protected area, the Sathyamangalam forest, located close to better known tiger reserves in India, through non-invasive faecal DNA analysis. Here we highlight the potential of Sathyamangalam as a tiger habitat. Tiger positive faecal samples were considered as evidence to establish occupancy in two different parts of Sathyamangalam, reserve forest and wildlife sanctuary. We collected 103 faecal samples out of which 69 were tiger positive. Species occupancy (psi), was 0.672 (±0.197) with a detection probability of 0.2 (±0.06) in the wildlife sanctuary area; while psi was 0.72 (±0.2) with detection probability of 0.212 (±0.6) in the reserve forest. Further, number of males and females, as determined in our study, was close to the ideal sex ratio in a healthy forest with good prey abundance. This study also highlights the presence of more females in the reserve forest (n = 10) than the wildlife sanctuary (n = 3) possibly indicating lesser disturbance and more prey availability. We recommend that the reserve forest to the north of Sathyamangalam wildlife sanctuary be declared as a tiger reserve. The wildlife sanctuary could serve as a buffer zone between this reserve and Sathyamangalam town which lies to the south of the forest. Proper protection of Sathyamangalam will go a long way in saving the entire landscape and tigers of the Western Ghats of India.
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References
Arandjelovic M, Guschanski K, Schubert G, Harris TR, Thalmann O, Siedel H, Vigilant L (2009) Two-step multiplex polymerase chain reaction improves the speed and accuracy of genotyping using DNA from noninvasive and museum samples. Mol Ecol Res 9:28–36
Bhagavatula J, Singh L (2006) Genotyping faecal samples of Bengal tiger Panthera tigris tigris for population estimation: a pilot study. BMC Genet 7:48
Borthakur U, Barman RD, Das C, Basumatary A, Talukdar A, Ahmed MF, Talukdar BK, Bharali R (2010) Noninvasive genetic monitoring of tiger (Panthera tigris tigris) population of Orang National Park, in the Brahmaputra floodplain, Assam, India. Eur J Wild Res. doi:10.1007/s10344-010-0471-0
Burnham KP, Anderson DR (2002) Model selection and multi-model inference. Springer-Verlag, New York
Cornuet JM, Luikart G (1996) Description and power analysis of two tests for detecting recent population bottlenecks from allele frequency data. Genetics 144:2001–2014
Cristescu R, Sherwin WB, Handasyde K, Cahill V, Cooper DW (2010) Detecting bottlenecks using bottleneck 1.2.02 in wild populations: the importance of the microsatellite structure. Conserv Genet 11:1043–1049
Di Rienzo A, Peterson AC, Garza JC, Valdes AM, Slatkin M, Freimer NB (1994) Mutational process of simple-sequence repeat loci in human populations. Proc Nat Acad Sci USA 91:3166–3170
Evanno G, Regnaut S, Goudet J (2005) Detecting the number of clusters of individuals using the software structure: a simulation study. Mol Ecol 14:2611–2620
Hines JE (2006) PRESENCE2- Software to estimate patch occupancy and related parameters.USGS-PWRC http://www.mbr-pwrc.usgs.gov/software/presence.html
Jhala YV, Gopal R, Qureshi Q (eds.) (2008) Status of the tigers, co-predators, and prey in India. National tiger conservation authority, Govt. of India: New Delhi, and Wildlife Institute of India: Dehradun. TR 08/001 pp 151
Jhala YV, Qureshi Q, Gopal R, Sinha PR (eds.) (2011) Status of the tigers, co-predators, and prey in India, 2010. National tiger conservation authority, Govt. of India: New Delhi, and Wildlife Institute of India: Dehradun. TR 2011/003 pp 302
Kalinowski ST, Taper ML, Marshall TC (2007) Revising how the computer program CERVUS accommodates genotyping error and increases success in paternity assignment. Mol Ecol 16:1006–1099
Karanth KU (2003) Tiger ecology and conservation in the Indian Subcontinent. J Bom Nat Hist Soc 100(2 and 3):169–189
Kimura M, Crow JF (1964) The number of alleles that can be maintained in a finite population. Genetics 49:725–738
Luikart G, Cornuet JM (1998) Empirical evaluation of a test for identifying recently bottlenecked population form allele frequency data. Conserv Biol 12:228–237
Luo SJ, Kim JH, Johnson WE, van der Walt J, Martenson J et al (2004) Phylogeography and genetic ancestry of tigers (Panthera tigris). PLoS Biol 2(12):e442
MacKenzie DI (2005) What are the issues with presence-absence data for wildlife managers? J Wild Manage 69(3):849–860
MacKenzie DI, Nichols JD, Lachman GB, Droege S, Royle JA, Langtimm CA (2002) Estimating site occupancy rates when detection probabilities are less than one. Ecology 83(8):2248–2255
Marshall TC, Slate J, Kruuk LEB, Pemberton JM (1998) Statistical confidence for likelihood-based paternity inference in natural populations. Mol Ecol 7:639–655
Menotti-Raymond M, David VA, Lyons LA, Schaffer AA, Tomlin JL, Hutton MK, O’Brien SJ (1999) A genetic linkage map of microsatellites of the domestic cat (Felis catus). Genomics 57:9–23
Mondol S, Karanth KU, Kumar NS, Gopalaswamy AM, Andheris A, Ramakrishnan U (2009) Evaluation of non-invasive genetic sampling methods for estimating tiger population size. Biol Conserv 242(10):2350–2360
Morin PA, Chambers KE, Boesch C, Vigilant L (2001) Quantitative polymerase chain reaction analysis of DNA from noninvasive samples for accurate microsatellite genotyping of wild chimpanzees (Pan troglodytes verus). Mol Ecol 10:1835–1844
Nichols JD, Karanth KU (2002) Statistical concepts: assessing spatial distributions. In: Karanth KU, Nichols JD (eds) Monitoring tigers and their prey. Centre for Wildlife Studies, India
Ohta T, Kimura M (1973) A model of mutation appropriate to estimate the number of electrophoretically detectable alleles in a finite population. Genet Res 22:201–204
Pilgrim KL, Mckelvey KS, Riddle AE, Schwartz MK (2005) Felid sex-identification based on noninvasive genetic samples. Mol Ecol Notes 5:60–61
Piry S, Luikart G, Cornuet JM (1999) Bottleneck: a computer program for detecting recent reductions in the effective population size using allele frequency data. J Hered 90(4):502–503
Pritchard JK, Stephens M, Donnelly P (2000) Inference of population structure using multilocus genotype data. Genetics 155:945–959
Reddy PA, Kumaraguru A, Yadav PR, Ramyashree A, Bhagavatula J, Shivaji S (2010) Studies to determine the presence or absence of the Indian Tiger (Panthera tigris tigris) in Kawal Wildlife Sanctuary, India. Eur J Wild Res. doi:10.1007/s10344-010-0460-3
Reed JZ, Tollit DJ, Thompson P, Amos W (1997) Molecular scatology: the use of molecular genetic analysis to assign species, sex and individual identity to seal faeces. Mol Ecol 6:225–234
Wikramanayake ED, Dinerstein E, Robinson JG, Karanth KU, Rabinowitz A, Olson D, Mathew T, Hedao P, Connor M, Hemley G, Bolze D (1999) Where can tigers live in the future? A framework for identifying high priority areas for conservation of tigers in the wild. In: Seidensticker J, Christie S, Jackson P (eds) Riding the Tiger. Cambridge University Press, UK
Acknowledgments
We would like to thank the Principal Chief Conservator of Forests (Wildlife), Tamil Nadu and the staff of Sathyamangalam forest for facilitating this research. We sincerely thank Dr. Lalji Singh for his involvement and encouragement in the initial stages of the project. This work was supported by the Department of Biotechnology, Government of India. We also gratefully acknowledge Naveen Kumar for helping us with the figures.
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Anuradha Reddy, P., Kumaraguru, A., Bhagavatula, J. et al. Tiger presence in a hitherto unsurveyed jungle of India–the Sathyamangalam forests. Conserv Genet 13, 779–787 (2012). https://doi.org/10.1007/s10592-012-0326-1
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DOI: https://doi.org/10.1007/s10592-012-0326-1