Results 41 to 50 of about 2,001 (128)
European Journal of Neuroscience, Volume 63, Issue 1, January 2026.In 1946, Tolman et al. reported that rats could take a novel shortcut to a goal after training on an indirect route, supporting the Cognitive Map theory. However, a review of subsequent Sunburst maze studies shows this is an outlier: shortcutting has been observed in only a relatively small fraction of experiments.
Éléonore Duvelle, Roddy M. Grieves
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Primatas da Reserva Biológica do Lago Piratuba, Amapá, Brasil: ocorrência, conflitos e ameaças
Biodiversidade Brasileira, 2017 Embora a Reserva Biológica do Lago Piratuba (RBLP) seja uma unidade de conservação de proteção integral, há incidências de pressões e ameaças que podem comprometer a conservação de sua biota. Neste trabalho, avaliou-se a presença de primatas na RBLP por
Eduardo Marques Santos Júnior +4 more
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The Infection Rates of Trypanosomes in Squirrel Monkeys at Two Sites in the Brazilian Amazon
Memorias do Instituto Oswaldo Cruz, 1997 A study was conducted to determine the prevalence of natural infections by trypanosome species in squirrel monkeys: Saimiri sciureus (Linnaeus) and Saimiri ustus (Geoffroy) caught respectively near 2 hydroelectric plants: Balbina, in the State of ...
Mariangela Ziccardi +1 more
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Video‐Sound Recording Devices Reveal Multiple Drivers of Nocturnal Vocalizations in Tibetan Macaques
Ecology and Evolution, Volume 15, Issue 12, December 2025.This study investigates the nocturnal vocal behavior of Tibetan macaques in Huangshan, China, using 4G infrared cameras and passive acoustic monitoring (PAM). Findings reveal a bimodal vocalization pattern (18:00–19:00 and 21:00–23:00), influenced by sex, age, social centrality, kinship, and ecological factors such as wind direction, temperature, and ...
Xin Gao +10 more
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Fibrosarcoma on the leg of an adult rhesus macaque (Macaca mulatta)
Veterinary Record Case Reports, Volume 13, Issue 4, December 2025.Abstract This case describes a fibrosarcoma on the left upper leg of an adult female rhesus macaque. The patient was initially presented with a defined swelling at the caudolateral side of the upper leg. Medially from the growth, a swollen circular wound had formed with a fistula leading in the direction of the mass.
Merel Wegman +4 more
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Replicación de los cromosomas sexuales de Saimiri sciureus
Acta Biológica Colombiana, 2004 El comportamiento de replicación tardía de los cromosomas sexuales de 19 individuos de la especie Saimiri sciureus fue estudiado utilizando cultivos de linfocitos sometidos a un pulso terminal de BrdU.
María Paulina Cabarcas M. +1 more
doaj
Origem e distribuição do plexo braquial de Saimiri sciureus
Pesquisa Veterinária Brasileira, 2012 Os autores descreveram a origem e composição do plexo braquial de quatro Saimiri sciureus, pertencentes ao Centro Nacional de Primatas (Cenp), Ananindeua/PA, os quais foram fixados com formaldeído e dissecados.
Elenara B. Araújo +5 more
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Close encounters of the friendly kind: pacific between‐group interactions in primates
Biological Reviews, Volume 100, Issue 6, Page 2257-2284, December 2025.ABSTRACT While intergroup conflict features prominently in the behavioural ecology literature, its antonym, intergroup peace, has been a rather neglected phenomenon until recently. Neighbourly relations and affiliative interactions are far from uncommon.
Cyril C. Grueter, Luca Pozzi
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Revista do Instituto de Medicina Tropical de São Paulo, 2012 This study examined the susceptibility of peritoneal macrophage (PM) from the Neotropical primates: Callithrix jacchus, Callithrix penicillata, Saimiri sciureus, Aotus azarae infulatus and Callimico goeldii to ex vivo Leishmania (L.) infantum chagasi ...
Liliane Almeida Carneiro +5 more
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Journal of Medical Primatology, Volume 54, Issue 6, December 2025.ABSTRACT Leptospirosis is an emerging zoonotic disease caused by pathogenic Leptospira spp., affecting a wide range of domestic and wild mammals including nonhuman primates (NHPs). Despite rising incidence rates in both NHPs and humans, there is a lack of comprehensive resources addressing leptospirosis in NHPs from a veterinary perspective in a One ...
Annemiek Maaskant +9 more
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