Investigação do uso espontâneo de ferramentas por macacos-prego selvagens (Sapajus libidinosus) do Parque Nacional Serra das Confusões  PI

Coutinho, Paulo Henrique

doi:10.11606/t.47.2021.tde-28052021-141937

Cited by 2 publications

(4 citation statements)

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“…The stone tool use behavior observed so far at UNP appears to fit the most usual pattern of cracking hard‐shelled resources we observe in other Caatinga and Cerrado populations previously studied (Table 8). For this comparison, we used populations that had more than 5 days of surveys or longer studies (Chalk et al, 2015; Coutinho, 2021; De Moraes et al, 2014; Falótico & Ottoni, 2016; Falótico et al, 2018, 2022; Ferraz et al, 2003; Mannu & Ottoni, 2009; L. P. C. dos Santos, 2015; Visalberghi et al, 2008, 2016). For lack of space and simplicity, this comparison table does not include the behaviors of stone tools to aid in digging, stone on stone, or stone‐throwing, which are behaviors, so far, only customarily registered at the SCaNP capuchin population (Haslam et al, 2018).…”

Section: Resultsmentioning

confidence: 99%

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Mapping nut‐cracking in a new population of wild capuchin monkeys (Sapajus libidinosus) at Ubajara National Park, Brazil

Falótico,

Valença,

Verderane

et al. 2024

American J Primatol

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Populations of bearded capuchin monkeys (Sapajus libidinosus) vary in their tool use behaviors, with some of this divergence regarded as culturally determined. The use of stone tools, primarily to crack open encased foods, is widespread among bearded capuchins living in dry habitats (Caatinga and Cerrado). Significant diversity in targets, processed foods, material, and size of tools is observed across populations. However, so far, only a few sites have been systematically studied, and we are still distant from a representative picture of the range of variation in capuchins’ culture. In this study, we did a systematic assessment of stone tool use sites in the Ubajara National Park (UNP), in the Caatinga region of Ceará, Brazil, recording and measuring stone tools, processed foods, and available lithic resources as part of an extensive comparative research, the CapCult project. We found indirect and direct evidence that capuchin monkeys at UNP customarily use hammerstones and anvils to process at least two species of palm nuts, macauba (Acrocomia aculeata) and the harder babaçu (Attalea speciosa). Most of the anvils were rock surfaces and had leftovers of only one palm nut species. The hammerstones used to process both palm nuts were not significantly different in weight, although the ones used for Ac. aculeata were longer. We found a higher frequency of nut‐cracking sites in the drier lowland area of the park, reflecting differences in the density of the most common palm species, Ac. aculeata, and availability of raw stone material. The stone tool use observed in UNP is within the scope of previously reported in savannah capuchin populations. Our study widens the knowledge of stone tool‐use diversity in wild capuchin monkeys, which could contribute to shaping conservation policy, including cultural traits.

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Section: Resultsmentioning

confidence: 99%

“…For this comparison, we used populations that had more than 5 days of surveys or longer studies (Chalk et al, 2015;Coutinho, 2021;De Moraes et al, 2014;Falótico et al, 2018Falótico et al, , 2022Ferraz et al, 2003;Mannu & Ottoni, 2009;L. P. C. dos Santos, 2015;Visalberghi et al, 2008Visalberghi et al, , 2016.…”

Section: Population Comparisonmentioning

confidence: 99%

Mapping nut‐cracking in a new population of wild capuchin monkeys (Sapajus libidinosus) at Ubajara National Park, Brazil

Falótico,

Valença,

Verderane

et al. 2024

American J Primatol

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“…However, some differences are more subtle. Even though cashew nuts were available and softer than cashew nuts present in the SCaNP population, SCoNP monkeys do not eat cashew nuts, with or without stone tools 31 . Since the absence of consumption of this food resource in SCoNP is neither because of availability or impossibility of access, one could argue that this difference is a cultural behavior.…”

Section: Discussionmentioning

confidence: 96%

“…As for dry cashew, we found signi cant differences in both physical properties (Mann-Whitney, Z=23, p=0.017; Mann-Whitney, Z=23, p=0.018), with SCaNP nuts being harder and less elastic. We could not compare stone tools for cashews because SCoNP monkeys had not been observed to explore this resource, with or without tools 8,31 .…”

Section: Comparison Between Populationsmentioning

confidence: 99%

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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Investigação do uso espontâneo de ferramentas por macacos-prego selvagens (Sapajus libidinosus) do Parque Nacional Serra das Confusões PI

Cited by 2 publications

References 0 publications

Mapping nut‐cracking in a new population of wild capuchin monkeys (Sapajus libidinosus) at Ubajara National Park, Brazil

Mapping nut‐cracking in a new population of wild capuchin monkeys (Sapajus libidinosus) at Ubajara National Park, Brazil

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

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