Nonhuman Primate

A comparison of oocyte yield between ultrasound-guided and laparoscopic oocyte retrieval in rhesus macaques

Obtaining quality oocytes is a prerequisite for ART-based studies. Here we describe a method for transabdominal ultrasound-guided (US) oocyte retrieval in rhesus macaques (Macaca mullata) and compare it to the standard surgical approach using laparoscopy (LAP). We analyzed oocyte yield...

Year Published: 2023Topics: Reproduction, Surgery & Post-OpAnimal Type: Macaque, Nonhuman Primate

Citation: Piekarski, N., Hobbs, T. R., Jacob, D. et al. 2023. A comparison of oocyte yield between ultrasound-guided and laparoscopic oocyte retrieval in rhesus macaques. Animals 13(19), 3017.

Effects of enclosure and environmental enrichment on the behaviour of ring-tailed lemurs (Lemur catta)

Environmental enrichment is widely used to improve the quality of life of animals under human care. To successfully implement enrichment programs, it is important to evaluate their effect in different enclosure types since housing conditions may change depending on external...

Year Published: 2021Topics: Environmental Enrichment, HousingAnimal Type: Lemur, Nonhuman Primate

Citation: Laméris, D. W., Verspeek, J., Depoortere, A. et al. 2021. Effects of enclosure and environmental enrichment on the behaviour of ring-tailed lemurs (Lemur catta). Journal of Zoological and Botanical Gardens 2(2), 164–173.

Euthanasia complications in non-domestic species

There are very few studies describing euthanasia complications in non-domestic species. The goal of this study was to survey veterinarians to determine what complications may commonly occur during the euthanasia of non-domestic species. An online survey was sent to seven...

Year Published: 2022Topics: EuthanasiaAnimal Type: Amphibian, Bird, Fish, Marine Mammal, Nonhuman Primate, Other Animal, Other Bird, Other Fish, Parrot, Reptile, Shark & Ray

Citation: Hepps Keeney, C., Harrison, T. M. 2022. Euthanasia complications in non-domestic species. Journal of Zoological and Botanical Gardens 3(4), 616–623.

Choice, control, and animal welfare: Definitions and essential inquiries to advance animal welfare science

The ways in which humans can support good welfare for animals in their care is an ongoing subject of debate: some place emphasis on the animals' physical health; others, on animals' ability to live “natural lives”; and others on animals'...

Year Published: 2023Topics: Environmental Enrichment, Natural BehaviorAnimal Type: All/General, Macaque, Nonhuman Primate

Citation: Englund, M. D., Cronin, K. A. 2023. Choice, control, and animal welfare: Definitions and essential inquiries to advance animal welfare science. Frontiers in Veterinary Science 10.

Automated cognitive testing of monkeys in social groups yields results comparable to individual laboratory-based testing

Cognitive abilities likely evolved in response to specific environmental and social challenges and are therefore expected to be specialized for the life history of each species. Specialized cognitive abilities may be most readily engaged under conditions that approximate the natural...

Year Published: 2013Topics: Behavioral & Cognitive Testing, Housing, Social Housing & CompanionshipAnimal Type: Macaque, Nonhuman Primate

Citation: Gazes, R. P., Brown, E. K., Basile, B. M. et al. 2013. Automated cognitive testing of monkeys in social groups yields results comparable to individual laboratory-based testing. Animal Cognition 16(3), 445–458.

In the zone: Towards a comparative study of flow state in primates

Flow is an altered state of feeling ‘in the zone' when fully absorbed in a challenge and is associated with positive affective state (feelings). Despite almost five decades of research, Flow has not yet been recognized in nonhuman animals, despite...

Year Published: 2023Topics: Emotion, Pain, & Sentience, Environmental EnrichmentAnimal Type: Chimpanzee, Macaque, Nonhuman Primate

Citation: Clark, F. E. 2023. In the zone: Towards a comparative study of flow state in primates. Animal Behavior and Cognition 10(1), 62–88.

Confronting back-of-house traditions: Primates as a case study

This review commentary focuses on traditional management practices and facility design with suggested improvements in non-public primate management areas, often called “back-of-house”, (henceforth BOH) in zoos, sanctuaries, and research facilities. Progress has been made toward improving animal quality of life...

Year Published: 2022Topics: Housing, Husbandry & ManagementAnimal Type: Baboon, Capuchin, Chimpanzee, Lemur, Macaque, Marmoset, Nonhuman Primate, Other Nonhuman Primate, Owl Monkey, Squirrel Monkey, Vervet (African Green Monkey)

Citation: Brando, S., Coe, J. 2022. Confronting back-of-house traditions: Primates as a case study. Journal of Zoological and Botanical Gardens 3(3), 366–397.

A touchscreen-based, multiple-choice approach to cognitive enrichment of captive rhesus macaques (Macaca mulatta)

Research on the psychological and physiological well-being of captive animals has focused on investigating different types of social and structural enrichment. Consequently, cognitive enrichment has been understudied, despite the promising external validity, comparability, and applicability. As we aim to fill...

Year Published: 2023Topics: Environmental EnrichmentAnimal Type: Macaque, Nonhuman Primate

Citation: Calapai, A., Pfefferle, D., Cassidy, L. C. et al. 2023. A touchscreen-based, multiple-choice approach to cognitive enrichment of captive rhesus macaques (Macaca mulatta). Animals 13(17), 2702.

Closed-loop control of anesthetic state in nonhuman primates

Research in human volunteers and surgical patients has shown that unconsciousness under general anesthesia can be reliably tracked using real-time electroencephalogram processing. Hence, a closed-loop anesthesia delivery (CLAD) system that maintains precisely specified levels of unconsciousness is feasible and would...

Year Published: 2023Topics: Anesthesia & SedationAnimal Type: Macaque, Nonhuman Primate

Citation: Chakravarty, S., Donoghue, J., Waite, A. S. et al. 2023. Closed-loop control of anesthetic state in nonhuman primates. PNAS Nexus 2(10), 293.

Animal welfare: Could adult play be a false friend?

There is no consensus regarding the functions of play. As play behavior is a characteristic of young stages of development, it has been suggested that the higher prevalence of adult play observed in domestic animals could be the result of...

Year Published: 2015Topics: Natural Behavior, Welfare AssessmentAnimal Type: All/General, Equine, Macaque, Nonhuman Primate

Citation: Blois-Heulin, C., Rochais, C., Camus, S. et al. 2015. Animal welfare: Could adult play be a false friend? Animal Behavior and Cognition 2(2), 156–185.