Wild capuchin monkeys (Cebus libidinosus) use anvils and stone pounding tools
- D. Fragaszy, P. Izar, E. Visalberghi, E. Ottoni, M. de Oliveira
- BiologyAmerican Journal of Primatology
- 1 December 2004
An exploratory investigation in an area where nut‐cracking by wild capuchin monkeys is common knowledge among local residents finds physical evidence that monkeys cracked nuts on rock outcrops, boulders, and logs (collectively termed anvils).
Fission-Fusion Dynamics : New Research Frameworks. Commentaries
- F. Aureli, C. Schaffner, J. Yamagiwa
- Psychology
- 2008
Renewed interest in fission-fusion dynamics is due to the recognition that such dynamics may create unique challenges for social interaction and distinctive selective pressures acting on underlying…
Capuchin monkey tool use: Overview and implications
Nutcracking capuchins are mentioned in reports dating as far back as the sixteenth century, 1 , 2 as well as in Brazilian folklore. 3 However, it was barely a decade ago that primatologists…
Selection of Effective Stone Tools by Wild Bearded Capuchin Monkeys
- E. Visalberghi, E. Addessi, D. Fragaszy
- BiologyCurrent Biology
- 10 February 2009
Fallback foraging as a way of life: using dietary toughness to compare the fallback signal among capuchins and implications for interpreting morphological variation.
- B. Wright, K. Wright, C. Vinyard
- Environmental ScienceAmerican Journal of Physical Anthropology
- 1 December 2009
The toughness of foods exploited by two tufted capuchin species at two ecologically distinct sites is compared; C. apella in a tropical rainforest, and C. libidinosus in a cerrado forest to address whether or not a fallback foraging species exhibits a given suite of morphological and behavioral attributes, regardless of habitat.
Watching the best nutcrackers: what capuchin monkeys (Cebus apella) know about others’ tool-using skills
- E. Ottoni, B. Resende, P. Izar
- PsychologyAnimal Cognition
- 18 February 2005
Findings are reported showing that the choice of observational targets is an active, non-random process, and that observers seem to have some understanding of the relative proficiency of their group mates, preferentially watching the more skilled nutcrackers, which enhances not only scrounging payoffs, but also social learning opportunities.
Characteristics of hammer stones and anvils used by wild bearded capuchin monkeys (Cebus libidinosus) to crack open palm nuts.
- E. Visalberghi, D. Fragaszy, E. Ottoni, P. Izar, M. de Oliveira, F. Andrade
- BiologyAmerican Journal of Physical Anthropology
- 1 March 2007
Wild capuchins provide a new reference point for interpreting early percussive stone tool use in hominins, and a point of comparison with chimpanzees cracking nuts.
The fourth dimension of tool use: temporally enduring artefacts aid primates learning to use tools
- D. Fragaszy, D. Biro, E. Visalberghi
- Psychology, BiologyPhilosophical Transactions of the Royal Society B…
- 19 November 2013
It is proposed that enduring artefacts associated with tool use, such as previously used tools, partly processed food items and residual material from previous activity, aid non-human primates to learn to use tools, and to develop expertise in their use, thus contributing to traditional technologies in non-humans.
Flexible and conservative features of social systems in tufted capuchin monkeys: comparing the socioecology of Sapajus libidinosus and Sapajus nigritus
- P. Izar, M. Verderane, D. Fragaszy
- BiologyAmerican Journal of Primatology
- 1 April 2012
The similarity in mating systems indicates that this element of the social system is not affected by ecological variables and thus, is a more conservative behavioral feature of the genus Sapajus.
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