ECOLOGICAL NICHE MODELS OF TITYUS SERRULATUS LUTZ & MELLO, 1922 AND TITYUS STIGMURUS (THORELL, 1876) (ARACHNIDA: SCORPIONES)
DOI:
https://doi.org/10.56238/revgeov17n5-093Keywords:
Ecological Niche Models, Scorpions, Buthidae, Tityus serrulatus, Tityus stigmurusAbstract
Scorpions are venomous animals with high plasticity and could serve as models to biogeographic, natural history and evolutionary studies. Ecological niche modeling can help in understanding essential characteristics from species geographic distribution, also allowing prediction of future distribution patterns. Our goal was modeling the ecological niche of the scorpion species Tityus serrulatus and Tityus stigmurus, as well as identifying the variables that influence their distribution in different biomes and their occurrence boundaries in Amazon, Caatinga and Cerrado. Data was obtained from 12 Brazilian arachnological collections. Bioclimatic variables were obtained from the Worldclim database and niche modeling was implemented through the Maximum Entropy algorithm. Results showed the Atlantic Forest biome both influences species distribution and is the only biome showing a distributional overlap between T. serrulatus and T. stigmurus. For T. serrulatus, the most important variable was the average annual temperature, which is usually high. For T. stigmurus, variation in temperature had the greatest influence. Temperature limits range in both species: T. serrulatus apparently does not support elevated temperatures, while T. stigmurus suffers with constant temperature variations.
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