All that glitters is not gold: A projected distribution of the endemic Indian Golden Gecko Calodactylodes aureus (Reptilia: Squamata: Gekkonidae) indicates a major range shrinkage due to future climate change.

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Aditya Srinivasulu
Chelmala Srinivasulu


Climate change has a perceived threat on biodiversity due to its effect on species range.  Species with narrow ranges and highly specific climatic and habitat requirements are at higher risk.  To understand the influence of climate change on the Indian endemic gekkonid, the Indian Golden Gecko Calodactylodes aureus (Beddome, 1870) we model the present and future predicted distribution (2050 and 2070) under the CMIP5 RCP4.5 and RCP8.5 scenarios using MaxEnt under the HadGEM3-ES Model.  Our analysis revealed the negative impact of climate change on the Indian Golden Gecko with a decrease in the amount of climatically suitable areas in the future, and an almost total range shrinkage by 2070.  Despite its wide distribution in the eastern Deccan Peninsula, according to our predictions, the species is threatened by a shrinkage in the future range due to climate change.


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Author Biographies

Aditya Srinivasulu, Biodiversity Research and Conservation Society, Hyderabad, Telangana State 500015, India

Aditya Srinivasulu is an independent researcher associated with the Biodiversity Research and Conservation Society, Hyderabad, and is working on application and integration of modern technology with taxonomy, biogeography and conservation biology of South Asian tetrapods. 


Chelmala Srinivasulu, Natural History Museum and Wildlife Biology & Taxonomy Lab, Department of Zoology, Osmania University, Hyderabad, Telangana State 500007, India Systematics, Ecology & Conservation Laboratory, Zoo Outreach Organization (ZOO), 96 Kumudham Nagar, Vilankurichi Road, Coimbatore, Tamil Nadu 641035, India

Chelmala Srinivasulu heads the Wildlife Biology and Taxonomy Lab at Department of Zoology, Osmania University and is working on molecular phylogenetics, taxonomy, ecology, biogeography and effect of climate change on tetrapods of South Asia.



Araújo, M.B. and A. Guisan (2006). Five (or so) challenges for species distribution modelling. Journal of Biogeography, 33: 1677–1688. DOI: 10.1111/j.1365-2699.2006.01584.x

Araújo, M.B. and M. New (2007). Ensemble forecasting of species distributions. Trends in Ecology & Evolution, 22: 42-47. DOI: 10.1016/j.tree.2006.09.010

Araújo, M.B. and C. Rahbek (2006). How does climate change affect biodiversity? Science, 313: 1396–1397. DOI: 10.1126/science.1131758

Araújo, M.B., W. Thuiller and R.G. Pearson (2006). Climate warming and the decline of amphibians and reptiles in Europe. Journal of Biogeography, 33: 1712–1728. DOI: 10.1111/j.1365-2699.2006.01482.x

Austin, M. (2007). Species distribution models and ecological theory: a critical assessment and some possible new approaches. Ecological Modelling, 200: 1–19. DOI: 10.1016/j.ecolmodel.2006.07.005

Barry, S. and J. Elith (2006). Error and uncertainty and habitat models. Journal of Applied Ecology, 43: 413–423. DOI: 10.1111/j.1365-2664.2006.01136.x

Bauer, A., C. Srinivasulu, I. Agarwal, A.D. Roy, B. Srinivasulu and P. Mohapatra (2013). Calodactylodes aureus. In: IUCN 2013. IUCN Red List of Threatened Species. Version 2013.1. . Downloaded on 2 April 2016. DOI:

Bauer, A.M. and I. Das (2001). A review of the gekkonid genus Calodactylodes (Reptilia: Squamata) from India and Sri Lanka. Journal of South Asian Natural History, 5(1): 25–35.

Beaumont, L.J., L. Hughes and A.J. Pitman (2008). Why is the choice of future climate scenarios for species distribution modelling important? Ecology Letter, 11: 1135–1146. DOI: 10.1111/j.1461-0248.2008.01231.

Beddome, R.H. (1870). Description of some new lizards from the Madras Presidency. Madras Monthly Journal of Medicine and Science, 1: 30–35.

Bombi, P., M. Capula, M. D’Amen and L. Luiselli (2011). Climate change threatens the survival of highly endangered Sardinian populations of the snake Hemorrhois hippocrepis. Animal Biology, 61: 239–248. DOI: 10.1163/157075511X584191

Brereton, R., S. Bennett and I. Mansergh (1995). Enhanced greenhouse climate change and its potential effect on selected fauna of southeastern Australia: a trend analysis. Biological Conservation, 72: 339–354. DOI: 10.1016/0006-3207(94)00016-J

Brooks, T.M., R.A. Mittermeier, G.A.B. da Fonseca, J. Gerlach, M. Hoffmann, J.F. Lamoreux, C.G. Mittermeier, J.D. Pilgrim and A.S.L. Rodrigues (2009). Global biodiversity conservation priorities. Science, 313: 58–61. DOI: 10.1126/science.1127609

Brown, J.L. (2014). SDMtoolbox: a python-based GIS toolkit for landscape genetic, biogeographic, and species distribution model analyses. Methods in Ecology and Evolution, 5(7): 694–700. DOI: 10.1111/2041-210X.12200

Buisson. L., W. Thuiller, N. Casajus, S. Lek and G. Grenouillet (2010). Uncertainty in ensemble forecasting of species distribution. Global Change Biology, 16: 1145–1157. DOI: 10.1111/j.1365-2486.2009.02000.x

Chakrapani, I.S., B. Chanikyudu, R. Janardan Rao and M. Rajasekhar (2014). Status survey of the Indian Golden Gecko Calodactylodes aureus (Beddome, 1970) in YSR Kadapa and SVSR Nellore districts of Andhra Pradesh, India (sic). World Journal of Zoology, 9(1): 21–27.

Chettri, B. and S. Bhupathy (2010). Three little known reptile species from the Araku Valley, Eastern Ghats with notes on their distribution. Journal of Threatened Biology, 2(8): 1109–1113. DOI: 10.11609/JoTT.o2329.1109-13

D’Amen, M. and P. Bombi (2009). Global warming and biodiversity: evidence for climate-linked amphibian declines in Italy. Biological Conservation, 142: 3060–3067. DOI: 10.1016/j.biocon.2009.08.004

Daniel, J.C. and B. Bhushan (1985). The golden gecko of Tirumalai Hills. Hornbill, 1985(3): 17–18 +1 pl.

Daniel, J.C. (2002). The Book of Indian Reptiles and Amphibians. Bombay Natural History Society and Oxford University Press, Bombay. 238 pp.

Daniel, J.C., B. Bhushan and A.G. Sekar (1986). Rediscovery of the golden gecko Calodactylodes aureus (Beddome) in the Eastern Ghats of Andhra Pradesh. Journal of the Bombay Natural History Society, 83: 15–16.

Deutsch, C.A., J.J. Tewksbury, R.B. Huey, K.S. Sheldon, C.K. Ghalambor, D.C.

Haak and P.R. Martin (2008). Impacts of climate warming on terrestrial ectotherms across latitude. Proceedings of the National Academy of Sciences – Biological Sciences, 105: 6668–6672. DOI: 10.1073/pnas.0709472105

Dillon, M.E., G. Wang and R.B. Huey (2010). Global metabolic impacts of recent climate warming. Nature, 467: 704–707. DOI: 10.1038/nature09407

Duarte, H., M. Tejedo, M. Katzenberger, F. Marangoni, D. Baldo, J.F. Beltrán, D.A. Martí, A. Richter-Boix and A. Gonzalez-Voyer (2012). Can amphibians take the heat? Vulnerability to climate warming in sub-tropical and temperate larval amphibian communities. Global Change Biology, 18: 412–421. DOI: 10.1111/j.1365-2486.2011.02518.x

Dutta, S.K., B. Mohanty and P.P. Mohapatra (2005). Niyamgiri unraveled. Sanctuary Asia Magazine, 2005(October): 56–59.

Elith. J., M.A. Burgman and H.M. Regan (2002). Mapping epistemic uncertainties and vague concepts in predictions of species distributions. Ecological Modelling, 157: 313¬–329. DOI: 10.1016/S0304-3800(02)00202-8

Elith, J., C.H. Graham, R.P. Anderson, M. Dudík, S. Ferrier, A. Guisan, R.J. Hijmans, F. Huettmann, J.R. Leathwick, A. Lehmann, J. Li, L.G. Lohmann, B.A. Loiselle, G. Manion, C. Moritz, M. Nakamura, Y. Nakazawa, J.McC.M. Overton, A.T. Peterson, S.J. Phillips, K. Richardson, R. Scachetti-Pereira, R.E. Schapire, J. Soberón, S. Williams, M.S. Wisz and N.E. Zimmermann (2006). Novel methods improve prediction of species’ distributions from occurrence data. Ecography, 29: 129–151. DOI: 10.1111/j.2006.0906-7590.04596.x

Gibbons, J.W., D.E. Scott, T.J. Ryan, K.A. Buhlmann, T.D. Tuberville, B. Metts, J. Greene, T. Mills, Y. Leiden and S. Poppy (2000). The global decline of reptiles, Déjà Vu amphibians. BioScience, 50: 653–666. DOI:[0653:TGDORD]2.0.CO;2

Gibson, L., B. Barrett and A. Burbidge (2007). Dealing with uncertain absences in habitat modelling: a case study of a rare ground-dwelling parrot. Diversity and Distribution, 13: 704–713. DOI: 10.1111/j.1472-4642.2007.00365.x

Guisan, A. and W. Thuiller (2005). Predicting species distribution: offering more than simple habitat models. Ecology Letter, 8: 993–1009. DOI: 10.1111/j.1461-0248.2005.00792.x

Guisan, A. and N.E. Zimmermann (2000). Predictive habitat distribution models in ecology. Ecological Modelling, 135: 147–186. DOI: 10.1016/S0304-3800(00)00354-9

Hijmans, R.J., S.E. Cameron, J.L. Parra, P.G. Jones and A. Jarvis (2005). Very high resolution interpolated climate surfaces for global land areas. International Journal of Climatology, 25: 1965–1978. DOI: 10.1002/joc.1276

Huey, R.B., C.A. Deutsch, J.J. Tewksbury, L.J. Vitt, P.E. Hertz, H.J. Ãlvarez-Pérez and T. Garland Jr. (2009). Why tropical forest lizards are vulnerable to climate warming. Proceedings of the Royal Society of London, B. Biology, 276: 1939–1948. DOI: 10.1098/rspb.2008.1957

IPCC (2014). Climate change 2014: Synthesis Report. Contribution of Working Groups I, II and III to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change [Core Writing Team, R.K. Pachauri and L.A. Meyer (eds.)]. IPCC, Geneva, Switzerland. 151 pp.

Javed, S.M.M., A. Waran and F. Tampal (2007). On the occurrence of golden gecko Calodactylodes aureus in Papikonda Hills, Eastern Ghats, India. Zoo’sPrint Journal, 22(6): 2727–2729.

Jaynes, E.T. (1957). Information theory and statistical mechanics. Physical Review, 106: 620–630. DOI:

Kalaimani, A. and A. Nath (2012). A new locality and microhabitat usage by Calodactylodes aureus (Beddome, 1870) from Tamil Nadu, Eastern Ghats, Southern India. Herpetotropicos, 8(1-2): 49–54.

Kalaimani, A. and A. Nath (2013). The Indian Golden Gecko, Calodactylodes aureus (Beddome, 1870) in Tamil Nadu, India. Taprobanica, 5(1): 81–84. DOI:

Kearney, M., R. Shine and W.P. Porter (2009). The potential for behavioral thermoregulation to buffer ‘‘cold-blooded’’ animals against climate warming. Proceedings of the National Academy of Sciences – Biological Sciences, 106: 3835–3840. DOI: 10.1073/pnas.0808913106

Loiselle, B.A., C.A. Howell, C.H. Graham, J.M. Goerck, T. Brooks, K.G. Smith and P.H. Williams (2003). Avoiding pit-falls of using species distribution models in conservation planning. Conservation Biology, 17: 1591–1600. DOI: 10.1111/j.1523-1739.2003.00233.x

Maiorano, L., A. Falcucci, N.E. Zimmermann, A. Psomas, J. Pottier, D. Baisero, C. Rondinini, A. Guisan and L. Boitani (2011). The future of terrestrial mammals in the Mediterranean basin under climate change. Philosophical Transactions of the Royal Society, B. Biological Sciences, 366(1578): 2681–2692. DOI: 10.1098/rstb.2011.0121

Marmion, M., M. Parviainen, M. Luoto, R.K. Heikkinen and W. Thuiller (2009). Evaluation of consensus methods in predictive species distribution modelling. Diversity and Distribution, 15: 59–69. DOI: 10.1111/j.1472-4642.2008.00491.x

McPherson, J.M. and W. Jetz (2007). Effects of species’ ecology on the accuracy of distribution models. Ecography, 30: 135–151. DOI: 10.1111/j.0906-7590.2007.04823.x

Molur, S. and S. Walker (eds.) (1998). Report of the Workshop “Conservation Assessment and Management Plan for Reptiles of Indiaâ€. Zoo Outreach Organization and Conservation Breeding Specialist Group, Coimbatore, India. 175 p.

Olson, D.M. and E. Dinerstein (1998). The Global 200: A representation approach to conserving the Earth’s most biologically valuable ecoregions. Conservation Biology, 12: 502–515. DOI: 10.1046/j.1523-1739.1998.012003502.x

Ortega-Huerta, M.A. and A.T. Peterson (2008). Modeling ecological niches and predicting geographic distributions: a test of six presence-only methods. Revista Mexicana de Biodiversidad, 79: 205–221.

Parmesan, C. and G. Yohe (2003). A globally coherent fingerprint of climate change impacts across natural systems. Nature, 421: 37–42. DOI: 10.1038/nature01286

Pearson, R.G. and T.P. Dawson (2003). Predicting the impacts of climate change on the distribution of species: are bioclimate envelope models useful? Global Ecology and Biogeography, 12: 361–371. DOI: 10.1046/j.1466-822X.2003.00042.x

Pearson, R.G., C.J. Raxworthy, M. Nakamura and A.T. Peterson (2007). Predicting species distributions from small numbers of occurrence records: a test case using cryptic geckos in Madagascar. Journal of Biogeography, 34: 102–117. DOI: 10.1111/j.1365-2699.2006.01594.x

Pearson, R.G., W. Thuiller, M.B. Araújo, E. Martinez-Meyer, L. Brotons, C. McClean, L. Miles, P. Segurado, T.P. Dawson and D.C. Lees (2006). Model-based uncertain-ty in species range prediction. Journal of Biogeography, 33: 1704–1711. DOI: 10.1111/j.1365-2699.2006.01460.x

Phillips, S.J., R.P. Anderson and R.E. Schapire (2006). Maximum entropy modelling of species geographic distributions. Ecological Modelling, 190: 231–259. DOI: 10.1016/j.ecolmodel.2005.03.026

Pounds, J.A., M.P.L. Fogden and J.H. Campbell (1999). Biological response to climate change on a tropical mountain. Nature, 398: 611–615. DOI: 10.1038/19297

Rajasekhar, M. and N.N.N. Kumar (2007). A new finding on the occurrence of Golden Gecko (Calodactylodes aureus) in the rock boulders near Vellore town. Bioscan, 2(1): 61–62.

Rajasekhar, M. and I.S. Chakrapani (2012). Occurrence of Calodactylodes aureus in Chittoor district of Andhra Pradesh, India. International Journal of Comparative Animal Physiology, 30: 116–124.

Randin, C.F., R. Engler, S. Normand, M. Zappa, N.E. Zimmermann, P.B. Pearman, P. Vittoz, W. Thuiller and A. Guisan (2009). Climate change and plant distribution: local models predict high-elevation persistence. Global Change Biology 15: 1557–1569. DOI: 10.1111/j.1365-2486.2008.01766.x

Reddy, Y.A., P. Indira, T. Pullaiah, B. Sadasivaiah, K.R.K. Swamy and S.S. Rani (2013). Range extension of Indian Golden Gecko Calodactylodes aureus in Andhra Pradesh, India. Reptile Rap, 15: 41–42.

Rodriguez, J.P., L. Brotons, J. Bustamante and J. Seoane (2007). The application of predictive modelling of species distribution to biodiversity conservation. Diversity and Distribution, 13: 243–251. DOI: 10.1111/j.1472-4642.2007.00356.x

Root, T.L., J.T. Price, K.R. Hall, S.H. Schneider, C. Rosenzweig and J.A. Pounds (2003). Fingerprints of global warming on wild animals and plants. Nature, 421: 57–60. DOI: 10.1038/nature01333

Russell, A.P. and A.M. Bauer (1989). The morphology of the digits of the golden gecko, Calodactylodes aureus and its implications for the occupation of rupicolous habitats. Amphibia-Reptilia, 10: 125–140.

Seo, C., J.H. Thorne, L. Hannah and W. Thuiller (2009). Scale effects in species distribution models: implications for conservation planning under climate change. Biology Letters, 5: 39–43. DOI: 10.1098/rsbl.2008.0476

Sinervo, B., F. Méndez-de-la-Cruz, D.B. Miles, B. Heulin, E. Bastiaans, M. Villagrán-Santa Cruz, R. Lara-Resendiz, N. Martínez-Méndez, M.L. Calderón-Espinosa, R.N. Meza-Lázaro, H. Gadsden, L.J. Avila, M. Morando, I.J. De la Riva, P.V. Sepulveda, C.F.D. Rocha, N. Ibargüengoytía, C.A. Puntriano, M. Massot, V. Lepetz, T.A. Oksanen, D.G. Chapple, A.M. Bauer, W.R. Branch, J. Clobert and J.W. Sites Jr. (2010). Erosion of lizard diversity by climate change and altered thermal niches. Science, 5980: 894–899. DOI: 10.1126/science.1184695

Smith, M.A. (1935). The Fauna of British India, Including Ceylon and Burma. Reptilia and Amphibia Vol. II – Sauria. Taylor and Francis, London. Xiii + 440 p (with 2 folding maps and 1 pl).

Sreekar, R., C. Srinivasulu, M. Seetharamaraju and C.A. Srinivasulu (2010). Selection of egg attachment sites by the Indian Golden Gecko Calodactylodes aureus (Beddome, 1870) (Reptilia: Gekkonidae) in Andhra Pradesh, India. Journal of Threatened Biology, 2(11): 1268–1272.

Srinivasulu, B., C. Srinivasulu, T.A. Shah, G. Devender and H. Kaur (2014). First confirmed record of Calodactylodes aureus (Reptilia) from Karnataka, India. Taprobanica, 6(1): 53–54. DOI:

Srinivasulu, C., B. Srinivasulu and S. Molur (Compilers) (2014). The Status and Distribution of Reptiles in the Western Ghats, India. Conservation Assessment and Management Plan (CAMP). Wildlife Information Laision Development Society, Coimbatore, Tamil Nadu. 148 pp.

Stuart, S.N., J.S. Chanson, N.A. Cox, B.E. Young, A.S.L. Rodrigues, D.L. Fischman and R.W. Waller (2004). Status and trends of amphibian declines and extinctions worldwide. Science, 306: 1783–1786. DOI: 10.1126/science.1103538

Thomas, C.D., A. Cameron, R.E. Green, M. Bakkenes, L.J. Beaumont, Y.C. Collingham, B.F.N. Erasmus, M.F. de Siqueira, A. Grainger, L. Hannah, L. Hughes, B. Huntley, A.S. van Jaarsveld, G.F. Midgley, L. Miles, M.A. Ortega-Huerta, A. T. Peterson, O.L. Phillips and S.E. Williams (2004). Extinction risk from climate change. Nature, 427: 145–148. DOI: 10.1038/nature02121

Thuiller, W. (2004). Patterns and uncertainties of species’ range shifts under climate change. Global Change Biology, 10: 2020–2027. DOI: 10.1111/j.1365-2486.2004.00859.x

Thuiller, W (2007). Biodiversity - climate change and the ecologist. Nature, 448: 550–552. DOI: 10.1038/448550a

Varadaraju (2014). Status survey of Indian Golden Gecko, Calodactylodes aureus (Beddome, 1870) in Eastern Ghats, India. Records of the Zoological Survey of India, 114(3): 443–452.

Wake, D.B. (2007). Climate change implicated in amphibian and lizard declines. Proceedings of the National Academy of Sciences, U.S.A., 104: 8201–8202. DOI: 10.1073/pnas.0702506104

Walther, G.R., S. Berger and M.T. Sykes (2005). An ecological ‘footprint’ of climate change. Proceedings of the National Academy of Sciences – Biological Sciences, 272: 1427–1432. DOI: 10.1098/rspb.2005.3119

Walther, G.R., E. Post, P. Convey, A. Menzel, C. Parmesan, T.J.C. Beebee, F. Jean-Marc, O. Hoegh-Guldberg and F. Bairlein (2002). Ecological responses to recent climate change. Nature, 416: 389–395. DOI: 10.1038/416389a

Warren, D.L., R.E. Glor and M. Turelli (2008). Environmental niche equivalency versus conservatism: quantitative approaches to niche evolution. Evolution, 62: 2868–2883. DOI: 10.1111/j.1558-5646.2008.00482.x

Weinsheimer, F., A.A. Mengistu, and D. Rödder (2010). Potential distribution of threatened Leptopelis ssp. (Anura, Arthroleptidae) in Ethiopia derived from climate and land-cover data. Endangered Species Research, 9: 117–124. DOI: 10.3354/esr00231

Wisz, M.S., R.J. Hijmans, A.T. Peterson, C.H. Graham, A. Guisan and N.P.S.D.W. Group (2008). Effects of sample size on the performance of species distribution models. Diversity & Distributions, 14: 763–773. DOI: 10.1111/j.1472-4642.2008.00482.x

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