Enrichment and primate centers: Closing the gap between research and practice

A wealth of published research is available to guide environmental enrichment programs for nonhuman primates, but common practice may not consistently correspond to research findings. A 2003 survey to quantify common practice queried individuals overseeing enrichment programs about (a) social, feeding, structural, and manipulable enrichment; (b) human interaction and training; (c) general program administration; (d) […]

The use of positive reinforcement training to reduce stereotypic behavior in rhesus macaques

Stereotypic behavior is a pervasive problem for captive monkeys and other animals. Once this behavior pattern has started, it can be difficult to alleviate. We tested whether or not using positive reinforcement training (PRT) can reduce this undesired behavior. Subjects for this study were 11 adult, female rhesus macaques (Macaca mulatta) with a history of […]

Well-Being of Nonhuman Primates in Research


The Great Ape Aging Project: Caring for and Learning from Apes

The Great Ape Aging Project was initiated to promote improvements in the care and well-being of elderly apes and to advance fundamental knowledge regarding normal aging and age-related disorders. Increased understanding of ape biology and aging in apes can benefit individual apes, apes in general, as well as humans. The project involves behavioral, cognitive, locomotor, […]

The welfare of non-human primates used in research: Report of the Scientific Committee on Animal Health and Animal Welfare


The Development of an Operant Conditioning Training Program for New World Primates at the Bronx Zoo

This article describes the development of an operant conditioning training program for 17 species of New World primates at the Bronx Zoo. To apply less invasive techniques to husbandry protocols, the study introduced behaviors-hand feeding, syringe feeding, targeting, scale and crate training, and transponder reading-for formal training to 86 callitrichids and small-bodied cebids housed in […]

Training Nonhuman Primates to Cooperate With Scientific Procedures n Applied Biomedical Research

This report provides a brief overview of aspects of training nonhuman primates who have been, and continue to be, used in this laboratory. The research context involves applied behavioral studies in which animals are trained to perform complex operant behavioral sequences, often in their homecage environment. In such studies, animals have freedom to choose whether […]

Positive reinforcement training as a technique to alter nonhuman primate behavior: Quantitative assessments of effectiveness

Many suggest that operant conditioning techniques can be applied successfully to improve the behavioral management of nonhuman primates in research settings. However, relatively little empirical data exist to support this claim. This article is a review of several studies that discussed applied positive reinforcement training techniques (PRT) on breeding/research colonies of rhesus macaques (Macaca mulatta) […]

Serum chemistry concentrations of captive woolly monkeys (Lagothrix lagotricha)

Abstract 10.1002/zoo.20176.abs Woolly monkeys (Lagothrix sp.) are threatened species and numerous zoos have failed to sustain successful populations. The most common causes of death in captive woolly monkeys are related to pregnancy and hypertension. The objective of this retrospective study was to evaluate serum concentrations of a large number of captive woolly monkeys to establish […]

Primate puzzleboard: A simple environmental enrichment device for captive chimpanzees

Abstract 10.1002/zoo.1430100409.abs An environmental enrichment device was designed and evaluated for captive chimpanzees. The puzzleboard consisted of a 61-cm, square piece of clear plastic with holes of various sizes drilled into the center. The puzzleboard was bolted to the roof of a chimpanzee enclosure. Flavored primate treats were arranged on top of the board, and […]