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Istituto di scienze e tecnologie della cognizione

Torna all'elenco Contributi in rivista anno 2014

Contributo in rivista

Tipo: Articolo in rivista

Titolo: Stone Anvil Damage by Wild Bearded Capuchins (Sapajus libidinosus) during Pounding Tool Use: A Field Experiment

Anno di pubblicazione: 2014

Formato: Elettronico Cartaceo

Autori: Haslam, Michael; Cardoso, Raphael Moura; Visalberghi, Elisabetta; Fragaszy, Dorothy

Affiliazioni autori: University of Oxford; Universidade de Sao Paulo; Consiglio Nazionale delle Ricerche (CNR); University System of Georgia

Autori CNR:

  • ELISABETTA VISALBERGHI

Lingua: inglese

Abstract: We recorded the damage that wild bearded capuchin monkeys (Sapajus libidinosus) caused to a sandstone anvil during pounding stone tool use, in an experimental setting. The anvil was undamaged when set up at the Fazenda Boa Vista (FBV) field laboratory in Piaui, Brazil, and subsequently the monkeys indirectly created a series of pits and destroyed the anvil surface by cracking palm nuts on it. We measured the size and rate of pit formation, and recorded when adult and immature monkeys removed loose material from the anvil surface. We found that new pits were formed with approximately every 10 nuts cracked, (corresponding to an average of 38 strikes with a stone tool), and that adult males were the primary initiators of new pit positions on the anvil. Whole nuts were preferentially placed within pits for cracking, and partially-broken nuts outside the established pits. Visible anvil damage was rapid, occurring within a day of the anvil's introduction to the field laboratory. Destruction of the anvil through use has continued for three years since the experiment, resulting in both a pitted surface and a surrounding archaeological debris field that replicate features seen at natural FBV anvils.

Pagine totali: 8

Rivista:

PloS one Public Library of Science
Paese di pubblicazione: Stati Uniti d'America
Lingua: inglese
ISSN: 1932-6203

Numero volume: 9

Numero fascicolo: 11

DOI: 10.1371/journal.pone.0111273

Referee: Sė: Internazionale

Indicizzato da: ISI Web of Science (WOS) [000344556900042]

Strutture CNR:

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