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Sympatry between Alouatta caraya and Alouatta clamitans and the rediscovery of free-ranging potential hybrids in Southern Brazil
The results from this study emphasize the need for scientific studies in the region of the Ilha Grande National Park, one of the few regions in the Paraná River that currently harbors both howler species.
Wild mixed groups of howler species (Alouatta caraya and Alouatta clamitans) and new evidence for their hybridization
Two features of the hybrid morphotypes of the upper Paraná River support their status as true hybrids: the polymorphism of their coloration patterns and the extremely female-biased sex ratio.
Diets of three sympatric Neotropical small cats: Food niche overlap and interspecies differences in prey consumption
The opportunistic feeding behavior and the abundance of their primary prey (cricetid rodents) seem to allow these small cats to be resilient despite severe anthropogenic disturbance in the study area, and guidelines for future studies are suggested in order to understand the dynamics of mammalian carnivores demography.
Feeding habits of the crab-eating fox, Cerdocyon thous (Carnivora: Canidae), in a mosaic area with native and exotic vegetation in Southern Brazil
Its generalistic feeding habits can positively influence its survival in altered environments and compares different methods for dietary analysis and discusses some opportunistic behaviors of C. thous, such as the consumption of exotic species and the use of silviculture areas as hunting sites.
Differentiation and Species Status of the Neotropical Yellow-Eared Bats Vampyressa pusilla and V. thyone (Phyllostomidae) with a Molecular Phylogeny and Review of the Genus
A systematic re-evaluation of Vampyressa pusilla warrants the elevation of V. p. thyone from subspecies to species rank based on its distinction from the allopatric V. p. pusilla. Morphological,
Antipredator Behavior of Brown Howlers Attacked by Black Hawk-eagle in Southern Brazil
Brown howlers displayed behaviors specific to evading aerial predators, which are similar to the ones in other Neotropical primates.
Diet of brown-nosed coatis and crab-eating raccoons from a mosaic landscape with exotic plantations in southern Brazil
Analysis of stomach contents of road-killed specimens in southern Brazil suggests that the brown-nosed coati Nasua nasua and the crab-eating raccoon Procyon cancrivorus are opportunistic hypocarnivores, utilizing anthropic sources, with diet overlap.
Comparison of the diet of Alouatta caraya (Primates: Atelidae) between a riparian island and mainland on the Upper Parana River, southern Brazil
A dieta de grupos de Alouatta caraya presentes em matas ciliares estruturalmente diferentes (ilha e continente), na regiao de Porto Rico, Alto rio Parana, sul do Brasil, sugere sua importância para os bugios.
Home-range and space use by Didelphis albiventris (Lund 1840) (Marsupialia, Didelphidae) in Mutum Island, Paraná river, Brazil
Home-range is the area used by an animal in its daily activities. Home-range studies provide data on species mating systems and territorial behavior. Our main goal was to estimate the Didelphis