Species Composition and Spatial Distribution of Scorpions Based on Eco-Environmental Variables in Provinces Along with the Oman Sea and the Persian Gulf in Iran: A GIS-Based Approach.

Abstract

Scorpions are venomous arachnids with major medical health importance in Iran, specifically in the Southwest. In total, three families of scorpions, including Scorpionidae, Hemiscorpiidae, and Buthidae were reported in Iran. This study was conducted on scorpion ecology to determine the species composition and the dispersion of scorpions based on the ecological and environmental variables in combination with the Geographic Information System (GIS) in Khuzestan, Hormozgan, and Bushehr Provinces along with the Oman Sea and the Persian Gulf in Iran. Scorpions were collected from Hormozgan, Khuzestan, and Bushehr Provinces, Iran using the Ultra Violet light. The specimens were then identified according to their morphological characters utilizing reliable keys. To determine the relationship between the eco-environmental variables and the spatial distribution of species, the GPS points of the collected scorpions were recorded, and the scorpion shapefile was overlaid on digital elevation model, slope, land use, temperature, rainfall, soil texture, and bioclimatic maps. Totally, 25 specimens were reported in three families of Scorpionidae, Hemiscorpiidae, and Buthidae. Furthermore, Razianus zarudnyi, Androctonus crassicauda, Buthacus macrocentrus, Mesobuthus eupeus phillipsii, Odontobuthus bidentatus, and Hemiscorpius lepturus were the common species collected from Hormozgan, Khuzestan, and Bushehr Provinces, Iran. The results of the current study showed that a large number of species preferred the sand texture due to ecomorphological adaptation. Moreover, the poor rangeland vegetation cover was preferred by the majority of the scorpion species, including S. maurus townsendi. According to the results, the combination of the ecological factors related to the suitable habitat of different species of scorpion and GIS will provide the dispersal areas of each species. Furthermore, such databases can be comprehensive and valuable guides for health authorities to reduce and manage scorpion envenomation.