Nonhuman Primate

An assessment of ambient noise and other environmental variables in a nonhuman primate housing facility

Acoustic noise and other environmental variables represent potential confounds for animal research. Of relevance to auditory research, sustained high levels of ambient noise may modify hearing sensitivity and decrease well-being among laboratory animals. The present study was conducted to assess...

Year Published: 2022Topics: Husbandry & ManagementAnimal Type: Macaque, Nonhuman Primate

Citation: McLeod, A. R., Burton, J. A., Mackey, C. A. et al. 2022. An assessment of ambient noise and other environmental variables in a nonhuman primate housing facility. Lab Animal 51(8), 219-226.

A naturalistic environment to study visual cognition in unrestrained monkeys

Macaque monkeys are widely used to study vision. In the traditional approach, monkeys are brought into a lab to perform visual tasks while they are restrained to obtain stable eye tracking and neural recordings. Here, we describe a novel environment...

Year Published: 2022Topics: Behavioral & Cognitive Testing, RestraintAnimal Type: Macaque, Nonhuman Primate

Citation: Jacob, G., Katti, H., Cherian, T. et al. 2021. A naturalistic environment to study visual cognition in unrestrained monkeys. eLife 10, e63816.

The promise of behavioral tracking systems for advancing primate animal welfare

Recent years have witnessed major advances in the ability of computerized systems to track the positions of animals as they move through large and unconstrained environments. These systems have so far been a great boon in the fields of primatology,...

Year Published: 2022Topics: External Bodily Equipment, Welfare AssessmentAnimal Type: Baboon, Capuchin, Chimpanzee, Lemur, Macaque, Marmoset, Nonhuman Primate, Other Nonhuman Primate, Owl Monkey, Squirrel Monkey, Vervet (African Green Monkey)

Citation: Knaebe, B., Weiss, C. C., Zimmermann, J. et al. 2022. The promise of behavioral tracking systems for advancing primate animal welfare. Animals 12(13), 1648.

Video conference technology as a tool for pair introduction in rhesus macaques

Pair housing is known to promote welfare for macaques in captivity. However, finding compatible partners can be challenging, particularly when animals are not located near one another. Because macaques show interest in videos of conspecifics, we examined the use of...

Year Published: 2022Topics: Social Housing & CompanionshipAnimal Type: Macaque, Nonhuman Primate

Citation: Stull, C., Heagerty, A., Coleman, K. 2022. Video conference technology as a tool for pair introduction in rhesus macaques. Animals 12(14), 1783.

Assessment of indoor air quality for group-housed macaques (Macaca spp.)

Indoor Air Quality (IAQ) is strongly associated with animal health and wellbeing. To identify possible problems of the indoor environment of macaques (Macaca spp.), we assessed the IAQ. The temperature (°C), relative humidity (%) and concentrations of inhalable dust (mg/m3),...

Year Published: 2022Topics: Environmental Enrichment, Husbandry & ManagementAnimal Type: Macaque, Nonhuman Primate

Citation: Maaskant, A., Janssen, I., Wouters, I. M. et al. 2022. Assessment of indoor air quality for group-housed macaques (Macaca spp.). Animals 12(14), 1750.

An evaluation of ethograms measuring distinct features of enrichment use by captive chimpanzees (Pan troglodytes)

Environmental enrichment provides mental stimulation and minimizes abnormal behaviors in captive animals. In captive chimpanzees, individual animals may vary in the ways in which they benefit from enrichment or use enrichment devices, so investigating nuances in enrichment use may improve...

Year Published: 2022Topics: Environmental EnrichmentAnimal Type: Chimpanzee, Nonhuman Primate

Citation: Greeson, J. L., Gabriel, K. I., Mulcahy, J. B. et al. 2022. An evaluation of ethograms measuring distinct features of enrichment use by captive chimpanzees (Pan troglodytes). Animals 12(16), 2029.

Challenges with assessing and treating pain in research primates: A focused survey and literature review

Research primates may undergo surgical procedures making effective pain management essential to ensure good animal welfare and unbiased scientific data. Adequate pain mitigation is dependent on whether veterinarians, technicians, researchers, and caregivers can recognize and assess pain, as well as...

Year Published: 2022Topics: Analgesia, Welfare AssessmentAnimal Type: Baboon, Chimpanzee, Macaque, Nonhuman Primate, Other Nonhuman Primate, Owl Monkey, Squirrel Monkey, Vervet (African Green Monkey)

Citation: Paterson, E. A., Turner, P. V. 2022. Challenges with assessing and treating pain in research primates: A focused survey and literature review. Animals 12(17), 2304.

A deep transfer learning model for head pose estimation in rhesus macaques during cognitive tasks: Towards a nonrestraint noninvasive 3Rs approach

Head orientation is a measure of attention used in behavioral psychological research with non-human primates. It is used across a broad range of disciplines and settings, from the field to the laboratory. Field methods are time consuming with risk of...

Year Published: 2022Topics: Behavioral & Cognitive TestingAnimal Type: Macaque, Nonhuman Primate

Citation: Bethell, E. J., Khan, W., Hussain, A. 2022. A deep transfer learning model for head pose estimation in rhesus macaques during cognitive tasks: Towards a nonrestraint noninvasive 3Rs approach. Applied Animal Behaviour Science 255, 105708.

Sky after 30 years: A brief biography of three biomedical research chimpanzees in Japan

This article describes the strategies employed by Kumamoto Sanctuary in Japan to integrate 3 retired chimpanzees – who each spent 30 years singly housed in a biomedical facility – with the sanctuary's other residents.

Year Published: 2022Topics: Relocation & TransportAnimal Type: Chimpanzee, Nonhuman Primate

Citation: Hirata, S. 2022. Sky after 30 years: A brief biography of three biomedical research chimpanzees in Japan. Primates 63(2), 105–108.

Costs and benefits of living in a vegetated, compared with non‐vegetated, enclosure in male Japanese macaques (Macaca fuscata)

Improving captive environments for primates has been an important tool to enhance animal welfare. One method has been to provide primates with naturalistic vegetated enclosures to promote species-specific behaviors, enhancing interactions with their social and natural environment, such as an...

Year Published: 2022Topics: Environmental Enrichment, HousingAnimal Type: Macaque, Nonhuman Primate

Citation: Alejandro, J., Huffman, M. A., Bercovitch, F. B. 2022. Costs and benefits of living in a vegetated, compared with non‐vegetated, enclosure in male Japanese macaques (Macaca fuscata). Zoo Biology 41(2), 97-107.