Abstract
Abstract The dipsadid snake genus Tropidodryas consists of two species that occur in the Atlantic Forest along Brazil’s eastern coast, a conservation hot spot. Life-history information on pairs of sister species might allow insights into the evolutionary transitions that have occurred since the cladogenesis that putatively gave rise to them. We provide information on distribution, morphology, diet, reproduction, and seasonal activity of these species based on the examination of 624 specimens. The genus Tropidodryas occurs along a large extent of the Atlantic Forest of eastern Brazil, with T. striaticeps occurring at higher elevations, on average, than T. serra. These snakes forage by day either on the ground or in vegetation, consuming a wide variety of vertebrates, mainly mammals. Higher proportions of birds in the diet of T. serra and certain mammals in the diet of T. striaticeps probably reflect elevational differences in prey availability. An ontogenetic diet shift occurs in both species, with juvenil...
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