Behaviour 2019
Should I stay or should I go? Blond capuchin monkeys adjust their range in response to fruit availability
Erick Allan Silva1, Clayton Emerson Jerônimo1, Poliana Gabriele Lins2, Italo Ferreira Pereira1, Renata Gonçalves Ferreira1. 1Federal University of Rio Grande do Norte, Natal, RN, Brazil; 2Federal University of Mato Grosso, Cuiabá, MT, Brazil

Sapajus flavius is an endangered neotropical primate species predominantly found  in Atlantic Forest fragments in northeastern Brazil. Understanding how these animals cope with human impact in their habitats is important to implement conservation actions. We investigated the space use pattern of a group with 80 animais in a 290 ha fragment surrounded by sugar cane. We tested whether group´s home range decreases in periods of fruit abundance, according to results from capuchin monkeys living in continuous forests. We used data collected between 2014 and 2019 on individuals´ location points (N = 5499) and monthly fruit availability index (FAI) measured by Fournier method. Contrary to expected, the results show a positive effect of FAI on home range (β, SD=12.29, 3.41; R²=0.42; df=18) indicating that animals move more during productive periods in search for fruit available in the remaining fruit trees available in the fragment. These results concur to show that socio-ecological dynamics of animals living in fragments differ from those in continuous habitats and demands for specific modellings for population dynamics in these areas.