Results 91 to 100 of about 1,190 (163)

Primatas e suas particularidades evolutivas reveladas através de duas distintas abordagens genéticas [PDF]

open access: yes, 2022
A ordem Primata (Primates) compreende dois clados maiores que divergiram há aproximadamente 87 Ma: Strepsirrhini e Haplorrhini. Dentre os Haplorrhini, Platyrrhini é o único clado cujas espécies habitam o continente Americano, enquanto os Catarrhini ...
Landau , Luane Jandira Bueno
core  

The effects of feeding frequency on jaw loading in two lemur species

open access: yesAmerican Journal of Biological Anthropology, Volume 184, Issue 1, May 2024.
Abstract Objectives Studies on oral processing are often snapshots of behaviors that examine feeding through individual bouts. In this study, we expand on our previous work comparing bite/chew variables per feeding bout to summed daily biting, chewing, and food intake to interpret loading that could have potential morphological effects.
Nayuta Yamashita   +2 more
wiley   +1 more source

Male‐biased stone tool use by wild white‐faced capuchins (Cebus capucinus imitator)

open access: yesAmerican Journal of Primatology, Volume 86, Issue 4, April 2024.
Map of study site showing the islands of Coiba and Jicarón in Coiba National Park, Panama. On Coiba, both sexes of adult white‐faced capuchins use stone tools, while on Jicarón only males have been observed to use tools. Abstract Tool‐using primates often show sex differences in both the frequency and efficiency of tool use.
Zoë Goldsborough   +2 more
wiley   +1 more source

Long-Term Spatial Memory and Learning Set Formation in Captive Capuchin Monkeys (Cebus libidinosus = Sapajus cay) [PDF]

open access: yes, 2019
Researchers have long suspected that nonhuman primates have long-term spatial memory for locating food. However, few empirical studies have assessed spatial memory for a period longer than 1 day in nonhuman primates in a foraging context.We used a ...
Janson, Charles H.   +2 more
core   +2 more sources

Trypanosoma cruzi transmission in the wild and its most important reservoir hosts in Brazil

open access: yesParasites & Vectors, 2018
Trypanosoma cruzi (Kinetoplastea: Trypanosomatidae) infects all tissues of its hosts, which along with humans, include hundreds of mammalian species in the Americas. The epidemiology of T.
Ana Maria Jansen   +2 more
doaj   +1 more source

Utilização de técnicas de Enriquecimento Ambiental para promoção do bem-estar de dois espécimes de Sapajus libidinosus (Primates, Cebidae) no Zoológico Municipal de Uberlândia, Uberlândia, MG. [PDF]

open access: yes, 2023
Providing welfare is a challenge for institutions that keep animals under human care, as they are more likely to experience a low level of welfare. Environmental enrichment techniques can be adopted in order to maintain a better quality environment ...
Oliveira, Bruna dos Reis Gonçalves de
core  

Assessing the function of pounding tools in the Early Stone Age: A microscopic approach to the analysis of percussive artefacts from Beds I and II, Olduvai Gorge (Tanzania) [PDF]

open access: yes, 2016
This study explores the function of quartzite pounding tools from Olduvai Gorge (Tanzania) using microscopic and use wear spatial distribution analysis.
Arroyo, A, de la Torre, I
core   +1 more source

Anatomia dos núcleos da base de Alouatta belzebul [PDF]

open access: yes, 2022
The basal nuclei are well-defined bodies of neurons with specific functions, located inside the white medullary center of the brain, directly involved with the motor system, participating greatly in the planning and control processes of movements ...
Melo, Fabiana Cristina Silveira Alves de   +4 more
core   +1 more source

Variabilidade genética, demografia, história populacional e comportamento em populações de Sapajus libidinosus [PDF]

open access: yes, 2020
Macacos-prego da espécie Sapajus libidinosus são amplamente conhecidos pelo uso regular de ferramentas nos biomas brasileiros do Cerrado e da Caatinga. Os principais relatos de uso de ferramentas por S.
Cantele, Camila
core  

Material matters: raw material influences stone tool performance in capuchin monkeys [PDF]

open access: yes
Identifying the conditions that facilitate and shape tool use is a central focus in the field of human evolution and animal behaviour. Particular interest lies in the use of stone hammers by nonhuman primates to open encased food sources.
de la Torre, I.   +6 more
core   +1 more source

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