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Long-distance calls are loud vocalizations involved in within and between group communication in animals. These calls may maintain cohesion with group members or communicate the ownership of valuable resources such as territory, food, or mates to individuals from other groups. In howlers (Alouatta spp.), three nonmutually exclusive hypotheses suggest that(More)
To guide future conservation actions and management decisions, it is crucial to assess the population status and identify the environmental or anthropogenic variables that affect species’ abundance and persistence. The main goal of our study was to evaluate the population and conservation status of the three primate species inhabiting the Atlantic Forest of(More)
According to the principle of competitive exclusion, niche differentiation allows the stable coexistence of closely related species. We analyzed dietary profile and diversity, and dietary overlap between syntopic brown howlers (BR; Alouatta guariba clamitans) and black and gold howlers (BLG; A. caraya) in the Atlantic Forest of NE Argentina, with the(More)
Foraging traditions in primates are becoming the subject of increasing debate. Recent evidence for such a phenomenon was recently provided for wild Cebus capucinus [Fragaszy & Perry, 2003]. To better understand the bases of animal traditions, one should examine intrapopulation behavioral variability and the influence of social context on within-group(More)
Two yellow fever outbreaks (YFOs) occurred in northeastern Argentina between November 2007 and October 2008, seriously affecting populations of two howler monkey species: the brown howler Alouatta guariba clamitans and the black howler Alouatta caraya. Both howlers live syntopically in El Piñalito Provincial Park, Misiones, where four groups (36(More)
Natural hybridisation between species has been reported in several primate taxa. In the Neotropics, there is increasing evidence of this phenomenon in howler monkeys (genus Alouatta) in contact zones between species. We describe the first known case of formation of a mixed-species group, and two cases of putative infant hybrids between the brown howler(More)
Through presence-only data, ecological niche modeling can use environmental variables to generate maps of areas that are potentially suitable for the presence of a species, improving our knowledge of its niche requirements and extending our understanding of its geographic distribution. We used the ecological niche model MaxEnt to predict the potential(More)
In South America, yellow fever (YF) is an established infectious disease that has been identified outside of its traditional endemic areas, affecting human and nonhuman primate (NHP) populations. In the epidemics that occurred in Argentina between 2007-2009, several outbreaks affecting humans and howler monkeys (Alouatta spp) were reported, highlighting the(More)
This study is about the theoretical and theoric-practical courses of ENF02215 and ENF 02216, which focuses the care of the newborn, and his/her family, at Nursing School of Universidade Federal do Rio Grande do Sul. Also reports nursing students activities, enclose teaching plans, laboratory records and a guide-list to write the history and physical(More)
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