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Chaînes opératoires and resource-exploitation strategies in chimpanzee (Pan tro...
Carvalho, Susana; Cunha, Eugénia; Sousa, Cláudia; Matsuzawa, TetsuroWe apply archaeological methods to extend our knowledge of chimpanzee material culture. The chaîne opératoire conceptual framework, as introduced by ethnography, established technology as a phased process. Prehistoric archaeology adopted this concept to elucidate technological variability in tool-making procedures, based on knowledge of tool functions or subsistence patterns. We focused on the detection of oper...
Chaînes opératoires and resource-exploitation strategies in chimpanzee (Pan tro...
Carvalho, Susana; Cunha, Eugénia; Sousa, Cláudia; Matsuzawa, TetsuroJournal of Human Evolution, V. 55, pp. 148-163 ; We apply archaeological methods to extend our knowledge of chimpanzee material culture. The chaıne operatoire conceptual framework, as introduced by ethnography, established technology as a phased process. Prehistoric archaeology adopted this concept to elucidate technological variability in tool-making procedures, based on knowledge of tool functions or subsist...
Chimpanzees Share Forbidden Fruit
Hockings, Kimberley; Humle, Tatyana; Anderson, James; Biro, Dora; Sousa, Cláudia; Ohashi, Gaku; Matsuzawa, TetsuroPLoS ONE - www.plosone.org, V.9, e886 ; The sharing of wild plant foods is infrequent in chimpanzees, but in chimpanzee communities that engage in hunting, meat is frequently used as a ‘social tool’ for nurturing alliances and social bonds. Here we report the only recorded example of regular sharing of plant foods by unrelated, non-provisioned wild chimpanzees, and the contexts in which these sharing behaviour...
Cultural innovation and transmission of tool use in wild chimpanzees:evidence f...
Biro, Dora; Inoue-Nakamura, Noriko; Tonooka, Rikako; Yamakoshi, Ren; Sousa, Cláudia; Matsuzawa, TetsuroAnimal Cognition, V.6, pp. 213-223 ; Chimpanzees (Pan troglodytes) are the most proficient and versatile users of tools in the wild. How such skills become integrated into the behavioural repertoire of wild chimpanzee communities is investigated here by drawing together evidence from three complementary approaches in a group of oil-palm nut- (Elaeis guineensis) cracking chimpanzees at Bossou, Guinea. First, ex...
Behavioural development in a matching-to-sample task and token use by an infant...
Sousa, Cláudia; Okamoto, Sanae; Matsuzawa, TetsuroAnimal Cognition, V.6, pp. 259–267 ; We investigated the behavioural and cognitive development of a captive male infant chimpanzee, Ayumu, raised by his mother, Ai. Here we report Ayumu’s achievements up to the age of 2 years and 3 months, in the context of complex computer-controlled tasks. From soon after birth, Ayumu had been present during an experiment performed by his mother. The task consisted of tw...
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