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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Wild capuchin monkeys adjust stone tools according to changing nut properties

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Luncz, Lydia V. ; Falotico, Tiago ; Pascual-Garrido, Alejandra ; Corat, Clara ; Mosley, Hannah ; Haslam, Michael
Número total de Autores: 6
Tipo de documento: Artigo Científico
Fonte: SCIENTIFIC REPORTS; v. 6, SEP 14 2016.
Citações Web of Science: 9

Animals foraging in their natural environments need to be proficient at recognizing and responding to changes in food targets that affect accessibility or pose a risk. Wild bearded capuchin monkeys (Sapajus libidinosus) use stone tools to access a variety of nut species, including otherwise inaccessible foods. This study tests whether wild capuchins from Serra da Capivara National Park in Brazil adjust their tool selection when processing cashew (Anacardium spp.) nuts. During the ripening process of cashew nuts, the amount of caustic defensive substance in the nut mesocarp decreases. We conducted field experiments to test whether capuchins adapt their stone hammer selection to changing properties of the target nut, using stones of different weights and two maturation stages of cashew nuts. The results show that although fresh nuts are easier to crack, capuchin monkeys used larger stone tools to open them, which may help the monkeys avoid contact with the caustic hazard in fresh nuts. We demonstrate that capuchin monkeys are actively able to distinguish between the maturation stages within one nut species, and to adapt their foraging behaviour accordingly. (AU)

Processo FAPESP: 14/04818-0 - Uso de ferramentas por macacos-prego (Sapajus libidinosus) selvagens: ecologia, aprendizagem socialmente mediada e tradições comportamentais
Beneficiário:Eduardo Benedicto Ottoni
Linha de fomento: Auxílio à Pesquisa - Temático
Processo FAPESP: 13/05219-0 - Uso de ferramentas por macacos-prego: aprendizagem e tradição
Beneficiário:Tiago Falótico
Linha de fomento: Bolsas no Brasil - Pós-Doutorado