ArticlePrimates; journal of primatology2018
Stone tool use by wild capuchin monkeys (Sapajus libidinosus) at Serra das Confusões National Park, Brazil.
Article in Primates; journal of primatology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
9 citing papers in PubMed, 38 citations in OpenAlex.
- New evidence of baobab (Adansonia digitata) pounding by western chimpanzees (Pan troglodytes verus).Primates; journal of primatology · 2026Article
- Stone tool use in a new population of semi-free-ranging robust capuchins (Sapajus spp.) at Monkeyland Primate Sanctuary, South Africa.Primates; journal of primatology · 2026Article
- The use of stone tool sites to estimate the home range of blonde capuchin monkeys in the Caatinga dry forest.Primates; journal of primatology · 2025Article
- Characterization of Stone Tool Use in Wild Groups of Critically Endangered Yellow-Breasted Capuchin Monkeys (Sapajus xanthosternos).American journal of biological anthropology · 2025Article
- A new addition to the toolbox: stone tool use in blonde capuchin monkeys (Sapajus flavius).Primates; journal of primatology · 2024Article
- Toxic tasting: how capuchin monkeys avoid grasshoppers' chemical defenses.Primates; journal of primatology · 2024Article
- Insights into the evolutionary history of the most skilled tool-handling platyrrhini monkey: Sapajus libidinosus from the Serra da Capivara National Park.Genetics and molecular biology · 2023Article
- Stone tools differences across three capuchin monkey populations: food's physical properties, ecology, and culture.Scientific reports · 2022Article
- Wild robust capuchin monkey interactions with sympatric primates.Primates; journal of primatology · 2021Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors at 1 institution in 2 countries.
Funding
Abstract
Capuchin monkeys (Sapajus spp.) are proficient tool users, and the use of stone tools occurs in several populations, mostly to crack open encased foods. Two well-studied Brazilian populations of Sapajus libidinosus inhabit Fazenda Boa Vista and Serra da Capivara National Park and present different behavioral sets regarding tool use. Serra das Confusões National Park (SCoNP) lies between those sites, but little is known about the capuchin monkey population that lives there. To begin unraveling the capuchin behavior in this area, we conducted a brief survey for tool use sites. We found indirect evidence that capuchin monkeys at SCoNP use stone hammers to crack open at least four species of seeds and fruits. Plant reproductive parts there are processed with stone tools in a similar pattern to the other sites. Further study is needed to directly observe tool use by capuchin monkeys at SCoNP, verify the occurrence of other possible types of tool use in this population, and thus fully compare their tool use repertoire to that of other populations.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.