Assessment of reptilian roadkill mortality due to vehicular traffic along highways in Gadchiroli and Chandrapur Districts, (M.S.), India

Road transportation networks are vital for regional development and economic growth; however, their expansion often results in substantial ecological impacts, particularly within biodiversity-rich landscapes. Wildlife mortality due to vehicular traffic has emerged as a significant global conservation concern, with reptiles among the most vulnerable vertebrate groups. Their susceptibility is largely attributed to thermoregulatory behavior, habitat specificity, and frequent movement across roads, especially in fragmented landscapes. The rapid development of road infrastructure in ecologically sensitive regions such as the Gadchiroli and Chandrapur districts of Maharashtra, India, poses a serious threat to native herpetofaunal diversity. The present study assessed reptilian roadkill mortality along selected highway stretches within these districts, with the objective of identifying species most susceptible to vehicular collisions. Using public road transect surveys combined with opportunistic observations, fortnightly monitoring documented a total of 60 reptilian roadkill specimens, representing 9 snake species. Among the documented species, the Common Trinket Snake (Coelognathus helena) exhibited the highest mortality, accounting for 12 individuals (20% of total roadkill). Other frequently affected species included the Common Sand Boa (Eryx conicus) and the Buff-striped Keelback (Amphiesma stolatum). Spatial patterns indicated significantly higher reptilian roadkill incidences along highway segments located near rivers, paddy fields, and other water bodies compared to relatively dry habitats. Understanding spatial and species-specific patterns of reptilian road mortality is essential for formulating effective conservation and mitigation strategies. Measures such as the provision of wildlife crossings, traffic speed regulation, installation of warning signage, and maintenance of habitat connectivity are strongly recommended, particularly along highways traversing ecologically sensitive zones.