3 research outputs found
Wild chimpanzees (Pan troglodytes troglodytes) exploit tortoises (Kinixys erosa) via percussive technology
Chimpanzees (Pan troglodytes), one of humankinds’ closest living relatives, are known to hunt and consume the meat of various animal taxa. Although some researchers have presented indirect evidence that chimpanzees may also prey on tortoises, until now, direct observations of this behaviour did not exist. Here, we provide systematic descriptions of the first observations of chimpanzee predation on tortoises (Kinixys erosa). We made these unprecedented observations on newly habituated chimpanzees (Pan troglodytes troglodytes) of the Rekambo community, living in the Loango National Park, Gabon. The behaviour qualified as customary, that is occurring in most or all adult males, involved a distinct smashing technique, and resulted frequently in food sharing with other group members. Our observations shed new light on the hitherto little understood percussive technology of chimpanzees, and expand our current knowledge on chimpanzees’ dietary and predatory repertoires with respect to reptiles. We also report a case of food storage and discuss it in the context of future-oriented cognition. Our findings suggest the need for more nuanced interpretations of chimpanzees’ cognitive skills in combination with an in-depth understanding of their unique socio-ecological niches. They further emphasize the importance of nonhuman primate field observations to inform theories of hominin evolution
Des chimpanzés sauvages (Pan troglodytes troglodytes) exploitent des tortues (Kinixys erosa) via une technique percussive
Le chimpanzé (Pan troglodytes), une des espèces les plus proches phylogénétiquement de l'espèce humaine, est connu pour chasser et consommer la viande de différents taxons animaux. Bien que certains chercheurs aient présenté des preuves indirectes de prédation sur des tortues, aucune observation directe de ce comportement n’a été faite jusqu'à présent. Dans cet article, nous présentons des descriptions systématiques des premières observations de prédation de chimpanzés sur des tortues (Kinixys erosa). Nous avons réalisé ces observations inédites sur les chimpanzés (Pan troglodytes troglodytes) nouvellement habitués de la communauté Rekambo, vivant dans le parc national de Loango, au Gabon. Ce comportement, qualifié d'habituel, survenant chez la plupart, voire même chez tous les mâles adultes, implique une technique percussive particulière et se termine fréquemment par un partage de nourriture avec d'autres membres du groupe. Nos observations apportent de nouveaux éléments sur les comportements, jusqu’à présent, peu connu de la technique percussive des chimpanzés et accroissent nos connaissances sur le répertoire alimentaire et de prédation des chimpanzés, impliquant des reptiles. Nous présentons également un cas de stockage de nourriture et le discutons dans le contexte des capacités de projection dans le futur. Nos découvertes suggèrent le besoin d’une interprétation plus nuancée des compétences cognitives des chimpanzés, intégrant une compréhension plus approfondie de leurs niches sociaux-écologiques uniques. De plus, ces observations soulignent l’importance des observations des primates non-humains in situ, pour alimenter les théories de l’évolution des hominines.Chimpanzees (Pan troglodytes), one of humankinds’ closest living relatives, are known to hunt and consume the meat of various animal taxa. Although some researchers have presented indirect evidence that chimpanzees may also prey on tortoises, until now, direct observations of this behaviour did not exist. Here, we provide systematic descriptions of the first observations of chimpanzee predation on tortoises (Kinixys erosa). We made these unprecedented observations on newly habituated chimpanzees (Pan troglodytes troglodytes) of the Rekambo community, living in the Loango National Park, Gabon. The behaviour qualified as customary, that is occurring in most or all adult males, involved a distinct smashing technique, and resulted frequently in food sharing with other group members. Our observations shed new light on the hitherto little understood percussive technology of chimpanzees, and expand our current knowledge on chimpanzees’ dietary and predatory repertoires with respect to reptiles. We also report a case of food storage and discuss it in the context of future-oriented cognition. Our findings suggest the need for more nuanced interpretations of chimpanzees’ cognitive skills in combination with an in-depth understanding of their unique socio-ecological niches. They further emphasize the importance of nonhuman primate field observations to inform theories of hominin evolution