Population status, habitat suitability and threat assessment of Indian spiny-tailed lizard Saara hardwickii (Gray, 1827) in the Thar desert of Rajasthan
DOI:
https://doi.org/10.22120/jwb.2020.122080.1120Keywords:
Conservation, crucial habitats, GIS, local extinction, IndiaAbstract
In India, the population of the Indian spiny-tailed lizard is extinct in many parts of its past distribution. Currently, the species is mainly confined to the desert areas of northwestern India. The present study was carried out from January 2014 to May 2017 in the Thar desert of Rajasthan (TDR) to know the population status and habitat suitability of the species and to assess the threats it faces. For this, the population was estimated through active burrow counting in selected 15mx15m quadrats. GIS-based weighted overlay analysis was used for habitat suitability analysis for which habitat and microhabitat information was collected through 'perambulation,' and 'quadrat sampling-time constrained'methods. Threats were documented using various methods viz. through vehicular surveys, perambulation, opportunistic searches, and by interacting with local people as well as forest staff. The species was recorded in six districts of the TDR. The overall density of the lizard was found to be 314.6±142.1 active burrows/ha in the study area. The maximum density was observed in the Jaisalmer district (362.5±102.3/ha) and the lowest in Jodhpur district (228.0±49.1/ha). Suitability analysis identified different potential habitat zones of the species in the TDR which are 1.71%, 13.49%, 59.51%, 10.65%, and 14.64% as most suitable, moderately high suitable, moderately low suitable, low suitable and unsuitable respectively. The majority of most suitable areas found to fall in the Jaisalmer district of western Rajasthan that needs to be protected immediately. The study also revealed the species had been continuously facing various threats in the TDR that lead to local extinctions.
References
Baqri Q.H., Kankane P.L. 2002. Deserts: Thar, in: Alfred, J.R.B., Das, A.K., Sanyal, A.K. (Eds.), Ecosystems of India. ENVIS-Zoological Survey of India, Kolkata, pp 93-109.
Biswas S., Sanyal D.P. 1977. Fauna of India, Rajasthan-Reptilia. Records of the Zoolgical Survey of India 73(1-4):247-269.
Campbell H.W., Christman S.P. 1982. Field techniques for herpetofaunal community analysis, in: Norman J Scott Jr. (Eds.), Herpetological communities. Wildlife Research Report No-13, U.S. Department of the Interior, Fish and Wildlife Service, Washington D.C., pp 193-200.
Chandra K., Gajbe P.U. 2005. An inventory of herpetofauna of Madhya Pradesh and Chhattisgarh. Zoos' Print Journal 20(3):1812-1819.
CITES 2020. Convention on international trade in endangered species on wild fauna and flora. http://www.cites.org. Downloaded on 2 Jan 2020.
Das S.K., Joshi M., Sahoo S. 2015. On the population status of Indian spiny-tailed lizard Saara hardwickii outside the Thar desert of Rajasthan, with a preliminary report on the herpetofauna of Sariska National Park. Herpetology Notes 8:51-54.
Das S.K., Dookia S., Das K., Dutta S.K. 2013. Ecological observations on the Indian spiny-tailed lizard Saara hardwickii (Gray, 1827) (Reptilia: Squamata: Agamidae) in Tal Chhapar Wildlife Sanctuary, Rajasthan, India. Journal of Threatened Taxa 5(1):3516-3526.
Das S.K., Pandey V.K. 2005. Food, feeding, behavior and habitat preferences of spiny-tailed lizard (Uromastix hardwicki Gray, 1827) in the Thar desert of Rajasthan, India. Tigerpaper 32(4): 30-32.
Dieni J.S. Jones S.L. 2002. A field test of the area search method for measuring breeding birds populations. Journal of Field Ornithology73(3):253- 257.
Dutta S., Jhala Y. 2007.Ecological aspects of Indian spiny-tailed lizard Uromastyx hardwickii in Kutch. Journal of the Bombay Natural History Society104(3):255-265.
Anonymous. 1994. Red data book on Indian animal, Part 1: Vertebrata (Mammalia, Aves, Reptiles and Amphibia). Zoological Survey of India, Kolkata, 534pp
Gomes L., Grilo, Silva C., Mira A. (2009). Identification methods and deterministic factors of owl roadkill hotspot locations in Mediterranean landscapes. Ecological Research 24(2):355-370.
Hill D.A., Matthew F., Graham T., Michael S., Philip S. (2005). Handbook of biodiversity methods: survey, evaluation and monitoring. Cambridge University Press, UK, 573pp.
Husain, A. 1997. Reptilia, in: Director, ZSI(Eds.), State fauna series 6, Fauna of Delhi. Zoological Survey of India, Kolkata, pp. 665-698.
IUCN 2020. IUCN Red list. http://www.iucnredlist.org. Downloaded on 2 Jan 2020.
Joshi M., Kaur M., Das S.K., Sarma K. 2019. An assessment of threats to wildlife in the Thar Desert of Rajasthan, India. International Journal of Research and Analytical Review 6(2):463-473.
Joshi M., Sarma K., Das S.K. 2017. Habitat suitability analysis of Indian desert monitor (Varanus griseus koniecznyi Mertens, 1954) in Thar desert of Rajasthan using geospatial technology. International Journal of Zoological Research13(3):105-112.
Kanaujia A., Kumar A., Kumar A. 2017. Herpetofauna of Uttar Pradesh, India. Biological Forum-An International Journal 9(1):118-130.
Khajuria H. 1986. On habits of some central Indian lizards with morphological notes on Eublepharis hardwickii Grey. Records of the Zoological Survey of India83(1-2):19-23.
Knapp A. 2004. An assessment of the international trade in spiny-tailed lizards Uromastyx with a focus on the role of the European Union, Technical Report to the European Commission. TRAFFIC Europe, European Commission, Brussels, Belgium, 29pp
Malczewski J. 2004. GIS-based land-use suitability analysis: a critical overview. Progress in Planning 62(1):3-65.
Molur S., Walker S. 1998. Conservation assessment and management plan for reptiles of India, Report of the orkshop (BCCP-Endangered Species Project). Conservation Breeding Specialist Group, Zoo Outreach Organisation, Coimbatore, India, 156pp.
Rais M., Baloch S., Rehman J., Anwar M., Hussain I., Mahmood T. 2012. Diversity and conservation of amphibians and reptiles in north Punjab, Pakistan. Herpetological Bulletin122:16-25.
Ralph C.J., Geupel G.R., Pyle P., Martin T.E., DeSante D.F. 1993. Handbook of field methods for monitoring land birds, General Technical Report PSW-GTR-144. U.S. Department of Agriculture, Forest Service, Pacific Southwest Research Station, 41pp.
Ramesh M. 2008. Status survey of the Indian spiny-tailed lizard Uromastyx hardwickii in the arid regions of Rajasthan, northwestern India.Final Report-Rufford Small Grants Foundation. https://www.rufford.org/rsg/projects/madhuri_ramesh. Downloaded on 20 May 2018.
Ramesh M., Ishwar N.M. 2008. Status and distribution of the Indian spiny-tailed lizard Uromastyx hardwickii in the Thar desert, western Rajasthan.Technical Report No. T02, Group for Nature Preservation and Education, India, 48pp.
Rodgers W.A., Panwar H.S., Mathur V.B. 2002. Wildlife Protected Area network in India: a review (executive summary). Wildlife Institute of India, Dehradun, 36pp.
Sanyal D.P. 1993. Reptilia, in: Director, ZSI(Eds.), State fauna series 1, Fauna of Orissa, Part 4. Zoological Survey of India, Kolkata, pp. 51-74.
Sharma C., Das A., Mohanty S., Singh U.S., Das S.K. 2018. DNA sequence monomorphism of Indian spiny-tailed lizard Saara hardwickii suggests urgent conservation. Journal of Entomology and Zoology Studies6(1):1547-1551.
Sharma R.C., Vazirani T.G. 1977. Food and feeding habits of some reptiles of Rajasthan. Records of the Zoological Survey of India73:77-93.
Smith M.A. 1935. The fauna of British India, including Ceylon and Burma: Reptilia and Amphibia-Sauria, Vol-II. Taylor and Francis, London, 440pp.
Solanki R., Pande A., Vasava A., Singh A., Bipin C.M. 2015. Contributions to herpetofauna of Jaisalmer district- some photographic records. Reptile Rap 17:50-55.
Srivastava D.P., Chauhan A.S., Ahlawat R. 2018. Indian Spiny-tailed Lizard: First record of Saara Hardwickii (Gray, 1827) in south-western Hisar District of Haryana, India. Reptile Rap 187, In: Zoo's Print 33(10):09-14.
Sur S., Gayen N.C., Raha S. 2007. Reptilia, in: Director, ZSI(Eds.), State fauna series 15, Faunt, of Madhya Pradesh (including Chhattisgarh), Part 1. Zoological Survey of India, Kolkata, pp. 79-111.
Uetz P., Freed P., Hosek J. 2020. The reptile database. https://www.reptile-database.org. Downloaded on 2 Jan 2020.
Vogt R.C., Hine R.L. 1982. Evaluation of techniques for assessment of amphibian and reptile population in Wisconsin, in: Norman J Scott Jr. (Eds.), Herpetological communities, Wildlife Research Report No-13. U.S. Department of the Interior, Fish and Wildlife Service, Washington D.C., pp. 201-217.
Vyas R. 200. A review of reptile studies in Gujarat state. Zoo's Print Journal 15(12):386-390.
Walke N. Obi Reddy G.P., Maji A.K., Thayalan S. 2012. GIS-based multicriteria overlay analysis in soil-suitability evaluation for cotton (Gossypium spp.): a case study in the black soil region of central India. Computer and Geosciences41:108-118.
Wilms T.M., Bhome W., Wagner P., Lutzmann N., Schmitz A. 2009. On the phylogeny and taxonomy of the genus Uromastyx merrem, 1820 (Reptilia: Squamata: Agamidae: Uromastycinae): resurrection of the genus Saara gray, 1845. Bonner zoologische Beiträge6:55-99.
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