Navegando por Autor "FERREIRA, Thiago Cavalcante"

Agora exibindo 1 - 2 de 2

Acesso aberto (Open Access)
Insights into the development of a juvenile harpy eagle’s hunting skills
(Instituto Nacional de Pesquisas da Amazônia, 2019-06) FERREIRA, Thiago Cavalcante; TUYAMA, Carlos Augusto; MOURTHÉ, Ítalo Martins da Costa
The post-fledging period is of paramount importance for raptors, since this is when a juvenile develops its hunting skills and gains the abilities required in adulthood and independence through dispersal. Little is known however, about this stage in the lives of raptors such as harpy eagles, Harpia harpyja. Between March 2016 and July 2017, we recorded three predation attempts on groups of primates by a wild juvenile harpy eagle in southwestern Brazilian Amazonia, including the first predation of an adult squirrel monkey, Saimiri ustus. These sequential records give insights into the gradual development of hunting skills during the post-fledging period, similar to what has been reported for other birds of prey. We hypothesize that a link between developing flight skills, decreasing parental food provisioning and increasingly successful captures triggers adulthood and independence in harpy eagles.
Acesso aberto (Open Access)
Predation of Boana boans (Anura, Hylidae) by an opportunistic frugivorous primate
(Instituto Nacional de Pesquisas da Amazônia, 2019-12) FERREIRA, Thiago Cavalcante; SIMÕES, Pedro Ivo; MOURTHÉ, Ítalo Martins da Costa
Although relatively common among omnivorous primates, anurophagy is still poorly documented in frugivorous species. Here we report the predation of a giant gladiator treefrog (Boana boans) by a large arboreal frugivore, the gray woolly monkey (Lagothrix lagotricha cana). The predation event occurred in a stretch of riparian forest located in a fragmented region in Cacoal, Rondônia state, in southwestern Brazilian Amazonia. Anurans can be a profitable, non-contested, and relatively easily acquired alternative resource for gray woolly monkeys, helping to fulfill their demand for protein, especially in periods of fruit scarcity. This new record broadens the knowledge on the natural history and predators of the giant gladiator frog.