Results 31 to 40 of about 1,341 (202)

A mechatronic platform for behavioral analysis on nonhuman primates [PDF]

open access: yes, 2012
In this work we present a new mechatronic platform for measuring behavior of nonhuman primates, allowing high reprogrammability and providing several possibilities of interactions.
Mirolli, Marco   +12 more
core   +1 more source

Neopterin as a Tool for Primate Ecoimmunology: Current Knowledge, Practical Application, and New Directions From Captivity to the Wild. [PDF]

open access: yesAm J Primatol
Neopterin is a sensitive and specific biomarker of intracellular pathogen infection and chronic inflammation, and affected by environmental, life‐history, and sex‐contextual factors. This review offers best‐practice guidelines and practical advice on sample collection, storage, and analysis in primates when used for ecoimmunological conservation and ...
Behringer V, Deimel C.
europepmc   +2 more sources

Impact of lactation upon fertility in the New World primate capuchin monkey (Cebus apella)

open access: yesJournal of Medical Primatology, 2000
In the present paper, we have studied the impact of lactation upon fertility in the capuchin monkey, Cebus apella, under laboratory conditions. Nursing females (ten females, 12 postpartum periods) presented lactational amenorrhea (first menses at 159.2±9.0 vs 42.6±5.8 days postpartum in five non‐nursing females, seven postpartum periods).
Recabarren, MP   +4 more
openaire   +4 more sources

Dissecting the mechanisms of squirrel monkey (Saimiri boliviensis) social learning [PDF]

open access: yesPeerJ, 2013
Although the social learning abilities of monkeys have been well documented, this research has only focused on a few species. Furthermore, of those that also incorporated dissections of social learning mechanisms, the majority studied either capuchins ...
LM Hopper   +3 more
doaj   +2 more sources

Variation in grouping patterns, mating systems and social structure: what socio-ecological models attempt to explain [PDF]

open access: yes, 2013
Socio-ecological models aim to predict the variation in social systems based on a limited number of ecological parameters. Since the 1960s, the original model has taken two paths: one relating to grouping patterns and mating systems and one relating to ...
Koenig, Andreas   +4 more
core   +1 more source

Neurochemical characterization of Cebus apella suprachiasmatic nucleus. [PDF]

open access: yes, 2011
O núcleo supraquiasmático (NSQ), principal relógio biológico circadiano em mamíferos, contem população variada de neurônios produtores de diferentes substâncias neuroativas. Em roedores, as pesquisas avançaram na investigação dos mecanismos moleculares e
Rocha, Vanderlei Amadeu da   +1 more
core   +1 more source

Tracing the evolutionary history of the morpho‐anatomy of baculum in primates

open access: yesThe Anatomical Record, EarlyView.
Abstract Animal morphology reflects both evolutionary history and present‐day adaptation. Male mammal copulatory structures such as the baculum (penile bone) are ideal for studying these processes because of their complexity and high interspecific variability. In primates, however, research has focused mostly on baculum length.
Federica Spani   +3 more
wiley   +1 more source

Monkeys (Macaca mulatta and Cebus apella) and human adults and children (Homo sapiens) compare subsets of moving stimuli based on numerosity

open access: yesFrontiers in Psychology, 2011
Two monkey species (Macaca mulatta and Cebus apella) and human children and adults judged the numerousness of two subsets of moving stimuli on a computer screen. Two sets of colored dots that varied in number and size were intermixed in an array in which
Michael J Beran   +3 more
doaj   +1 more source

Visual responses of ganglion cells of a New‐World primate, the capuchin monkey, Cebus apella

open access: yesThe Journal of Physiology, 2000
1. The genetic basis of colour vision in New-World primates differs from that in humans and other Old-World primates. Most New-World primate species show a polymorphism; all males are dichromats and most females trichromats. 2. In the retina of Old-World primates such as the macaque, the physiological correlates of trichromacy are well established ...
B B, Lee   +7 more
openaire   +3 more sources

The flexible, the stereotyped and the in‐between: putting together the combinatory tool use origins hypothesis

open access: yesBiological Reviews, Volume 101, Issue 3, Page 1235-1254, June 2026.
ABSTRACT Tool use research has long made the distinction between tool using that is considered learned and flexible, and that which appears to be instinctive and stereotyped. However, animals with an inherited tool use specialisation can exhibit flexibility, while tool use that is spontaneously innovated can be limited in its expression and facilitated
Jennifer A. D. Colbourne   +1 more
wiley   +1 more source

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