Stone tool use by wild capuchin monkeys (Sapajus libidinosus) at Serra das Confusões National Park, Brazil

Falótico, Tiago; Coutinho, Paulo Henrique M.; Bueno, Carolina Q.; Rufo, Henrique P.; Ottoni, Eduardo Β.

doi:10.1007/s10329-018-0660-0

Cited by 33 publications

(58 citation statements)

References 42 publications

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“…The higher frequency and degree of percussive damage in the oldest level of the site, as well as an increased frequency of flaked hammerstones, supports the inference of a change in pounding behaviour between Phase IV and Phases II and I, sometime between ~2500 and ~300 years ago. Hammerstones used for low-resistance food processing are significantly smaller and lighter than those used for all other capuchin percussive tasks 10,[14][15][16][17] , and the Phase IV hammerstones fall within the mean dimensions of those used for this activity. As noted, the increased damage on Phase IV tools is likely a consequence of frequent and repeated impacts between the hammerstone and an anvil stone, as a result of the smaller size of the processed food.…”

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Three thousand years of wild capuchin stone tool use

et al. 2019

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The human archaeological record changes over time. Finding such change in other animals requires similar evidence, namely, a long-term sequence of material culture. Here, we apply archaeological excavation, dating and analytical techniques to a wild capuchin monkey (Sapajus libidinosus) site in Serra da Capivara National Park, Brazil. We identify monkey stone tools between 2400 and 3000 years old, and based on metric and damage patterns demonstrate that capuchin food processing changed between ~2400 and 300 years ago, and between ~100 years ago and present day. We present the first example of long-term tool-use variation outside of the human lineage and discuss possible mechanisms of extended behavioral change.

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Three thousand years of wild capuchin stone tool use

et al. 2019

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“…Neotropical primates have complex vocal communication systems [Snowdon, 1997). Capuchin monkeys (Cebus and Sapajus genera) are known for their advanced cognitive abilities due to their high encephalisation quotient [Rilling and Insel, 1999;Milligan, 2010], tool use [Fragaszy et al, 2004a;Moura and Lee, 2004;Visalberghi et al, 2007;Canale et al, 2009;Ferreira et al, 2009;Barrett et al, 2018;Falótico et al, 2018], cooperation [De Waal, 2000;Scarry, 2013], coalitionary behaviours [Gros-Louis et al, 2003;Ferreira et al, 2006], and complex social structure [Fragaszy et al, 2004b;Izar et al, 2011;Verderane et al, 2013]. Studies on vocal communication have shown that capuchin monkeys have a vast vocal repertoire, with a wide variety of call types [Digweed et al, 2007;Gros-Louis et al, 2008;Bastos et al, 2015;Di Bitetti and Wheeler, 2017].…”

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confidence: 99%

The Vocal Repertoire of the Bearded Capuchin (Cebidae: Sapajus libidinosus): Implications for Understanding the Complexity of Neotropical Primate Communication

Lisboa¹,

Mendes²,

Silveira³

et al. 2021

IJFP

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Vocal communication is an essential aspect of primate social behaviour. The bearded capuchin Sapajus libidinosus is endemic to Brazil, and some studies have described specific vocalisation types for this species; however, there is still no complete description of its vocal repertoire. Thus, this study aimed to describe the vocal repertoire of a group of S. libidinosus living in theParque Nacional de Brasília, a protected area in the Cerrado area of Central Brazil. We carried out focal samplings and recording of vocalisations of members of an S. libidinosus troop in different behavioural contexts. The call analyses revealed 25 different types of vocalisations, and each call presented significant structural variation. We grouped these vocalisations according to the context of the emission or acoustic structure into the following categories: contact calls (contact note, infant babbling, trill, teeth- and lip-smacking, and sirena); foraging calls (chihui, grgr, and patinado); whistle series (food-associated, long-distance, and intergroup encounter); aggressive calls (aggressive contact note, ascending rapid staccato, cough cough, and pip); calls in response to aggression (scream, squeal, and pulsed scream), sexual display calls (chuck and raspy oestrous call), and stress-related calls (alarm call/bark, hiccup, hip, double hip, and wah wah). S. libidinosus presented a very rich vocal repertoire, revealing a pattern consistent with the repertoire of other capuchin monkey species. This is the first comprehensive description of the S. libidinosus vocal repertoire and highlights the complexity of neotropical primate communication.

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“…For example, Sapajus apella has a more robust skull and skeleton than S. libidinosus, but the latter has a diet with a high maximum and average toughness value 4,5 . This counterintuitive fact may represent behavioral adaptation in opposition to morphological adaptation since S. libidinosus' use of stone tools to exploit the most challenging foods in their diet [8][9][10][11][12][13][14] . The same may happen with yellowbreasted capuchins (S. xanthosternos), which also have a more gracile skull morphology than S. apella 7 and can access hard food resources using tools 15 .…”

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Matching physical properties of food and tools in three populations of wild capuchin monkeys

Falótico

Valença

Verderane

et al. 2021

Preprint

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Robust capuchin monkeys (Sapajus) are known for accessing mechanically challenging food. Although presenting morphological adaptations to do so, several populations go beyond the body limitations, using tools, mainly stone tools, to expand their food range. Those populations are diverse, some using stones more widely than others. We know stone tool size correlates with the target's resistance within some populations, but we have no detailed comparisons between populations so far. This study described and compared general environmental data, food’s physical properties, and stone tools features on three populations of bearded capuchin monkeys (Sapajus libidinosus), including a new site. The differences we observed regarding stone tool use between the new site (CVNP) and the previously studied ones could be partially explained by ecological factors, such as the raw material and resource availability. However, other differences appear to be more related to behavioral traditions, such as the processing of Hymenaea at CVNP, where the monkeys use bigger stones than other populations to process the same kind of food, which present similar physical properties between sites. Possible cultural differences need to be compared within a larger number of areas to better understand capuchin monkey behavioral variability.

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Stone tool use by wild capuchin monkeys (Sapajus libidinosus) at Serra das Confusões National Park, Brazil

Cited by 33 publications

References 42 publications

Three thousand years of wild capuchin stone tool use

Three thousand years of wild capuchin stone tool use

The Vocal Repertoire of the Bearded Capuchin (Cebidae: Sapajus libidinosus): Implications for Understanding the Complexity of Neotropical Primate Communication

Matching physical properties of food and tools in three populations of wild capuchin monkeys

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