Abstract
Snakebite envenoming is an important public health problem worldwide and addressing this issue has turned into a challenge for applied science. In this sense, the study of the distributional patterns of problematic snakes is central in terms of public health. Global Climate Change is affecting the distributional ranges of snakes, so that decisions regarding treatment of ophidism (poisoning by snake venom) may also change spatially and/or temporally. Here, we assessed suitable climate spaces at present conditions and estimated potential future changes in the distributions of the five southernmost venomous snakes, responsible for almost 99 % of accidents in Argentina, by implementing an ensemble of forecasts between different algorithms and scenarios for 2030 and 2080. Present suitable climate spaces showed high concordance with known distribution of the species. Future projections show moderate “north to south” displacements of the snakes’ suitable climate spaces, implying potential increments of suitable spaces in human populated areas in Argentina. Our results suggest the necessity of considering ophidism as a dynamic problem. In this regard, the analyses implemented here are useful tools in improving the assessment of snakebite envenoming in light of global climate change.
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Acknowledgments
We are grateful to J. Aparicio, L. Gonzales, H. Zaher, S. Kretzschmar, J. Williams, and J. Faivovich for generously providing access to the herpetological collections. We also thank G. Scrocchi, J. Lescano and N. Frutos who discussed several important aspects of this study, three anonymous reviewers who made important suggestions that greatly improved the ms, and Maria Eugenia Periago for improvements in the English version of the manuscript. JN is a PhD student at the Doctorado en Ciencias Biológicas, Universidad Nacional de Córdoba. PAC is a postdoctoral fellow (CONICET-SECyT), and GCL is a staff researcher at CONICET (Argentina). The authors’ research was supported by MINCyT–PID 2010 (project #000113/2011) and SECYT–UNC (project # 162/12). Land-Cover data set was developed for the European Space Agency.
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Suppl. Table 1
Georeferenced data records implemented to create the models. (XLSX 25 kb)
Suppl. Fig. 1
Maps with records of the entire range of five snake species (a) Bothrops alternatus (b) Bothrops ammodytoides (c) Bothrops diporus (d) Crotalus durissus terrificus (e) Micrurus pyrrhocryptus (JPEG 298 kb)
Suppl. Fig. 2
Map showing antrhopized and non-anthropized areas in the continent, overlapped with the suitable climatic spaces at current condition, 2030 and 2080 for each snake species (a) Bothrops alternatus (b) Bothrops ammodytoides (c) Bothrops diporus (d) Crotalus durissus terrificus (e) Micrurus pyrrhocryptus (JPEG 267 kb)
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Nori, J., Carrasco, P.A. & Leynaud, G.C. Venomous snakes and climate change: ophidism as a dynamic problem. Climatic Change 122, 67–80 (2014). https://doi.org/10.1007/s10584-013-1019-6
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DOI: https://doi.org/10.1007/s10584-013-1019-6