Nonhuman Primate

Behavior modification of lowland gorillas at he Cologne Zoo

Fruit, milk, eggs, bread etc. was eliminated from the diet. Food with a great deal of roughage was added in unlimited quantities like foliage, lucerne, alfalfa hay and vegetables. ... Eating of feces was eliminated by adding more vegetables to...

Year Published: 1991Animal Type: Nonhuman Primate, Other Nonhuman Primate

Citation: Ruempler, U. 1991. Behavior modification of lowland gorillas at he Cologne Zoo. Gorilla Gazette 5(2), 2-6.

Environmental enrichment objects and singly housed rhesus monkeys: Individual preferences and the restoration of novelty

We found that the extent of physical contact with the [Kong toy, Nylabone ring and Nylabone ball] toys habituated during a short time. ... The introduction of a different toy every Monday was accompanied by a restoration of the apparent...

Year Published: 1991Topics: Environmental EnrichmentAnimal Type: Macaque, Nonhuman Primate

Citation: Weick, B. G., Perkins, S. E., Burnett, D. E. et al. 1991. Environmental enrichment objects and singly housed rhesus monkeys: Individual preferences and the restoration of novelty. Contemporary Topics in Laboratory Animal Science 30(5), 18 (Abstract).

Rearing infant monkeys (Macaca nemestrina) in pairs produces deficient social development compared with rearing in single cages

Many scientists and colony managers assume that social housing is a beneficial living condition for all captive primates. Several older studies of primate development question the generality of this assumption. We recently tested this assumption by comparing the social development...

Year Published: 1991Topics: Social Housing & CompanionshipAnimal Type: Macaque, Nonhuman Primate

Citation: Ruppenthal, G. C., Walker, C. G., Sackett, G. P. 1991. Rearing infant monkeys (Macaca nemestrina) in pairs produces deficient social development compared with rearing in single cages. American Journal of Primatology 25, 103-113.

Environmental enrichment for Macaca fascicularis: Effects of shape and substance of manipulable objects

The ring was the most effective shape and the translucent flexible plastic was the most effective substance. Some abnormal self-directed behavioral patterns decreased significantly in the presence of manipulable objects. [Age of animals is not indicated.]

Year Published: 1991Animal Type: Macaque, Nonhuman Primate

Citation: Weld, K. P., Metz, B., Erwin, J. 1991. Environmental enrichment for Macaca fascicularis: Effects of shape and substance of manipulable objects. American Journal of Primatology 24, 139 (Abstract).

A prescription for psychological well-being

By far the most common physical problem that I treat as clinical veterinarian is trauma sustained by macaques in group-housing situations.

Year Published: 1991Animal Type: Macaque, Nonhuman Primate

Citation: Rolland, R. M. 1991. A prescription for psychological well-being. In: Through the Looking Glass. Issues of Psychological Well-Being in Captive Nonhuman Primates. Novak, M. A. , Petto, A. J. (eds), 129-134. American Psychological Association, Washington DC.

A built-in perch for primate squeeze cages

Perch installation design for single squeeze-back cages is described. Independent of gender the monkeys were seen using their perches more than 84% of the time.

Year Published: 1991Topics: Environmental EnrichmentAnimal Type: Nonhuman Primate

Citation: Watson, D. S. B. 1991. A built-in perch for primate squeeze cages. Laboratory Animal Science 41, 378-379.

Gorilla-approved behavioral enrichment ideas

Various enrichment items which have been popular with the gorillas are listed.

Year Published: 1991Topics: Environmental EnrichmentAnimal Type: Nonhuman Primate, Other Nonhuman Primate

Citation: Woods, S. 1991. Gorilla-approved behavioral enrichment ideas. Gorilla Gazette 5(1), 8-9.

Impaired performance from brief social isolation of rhesus monkeys (Macaca mulatta): A multiple video-task assessment

Both the number and the quality (i.e., speed and accuracy) of responses were significantly compromised in the social isolation condition relative to levels in which the animals were tested together.

Year Published: 1991Animal Type: Macaque, Nonhuman Primate

Citation: Washburn, D. A., Rumbaugh, D. M. 1991. Impaired performance from brief social isolation of rhesus monkeys (Macaca mulatta): A multiple video-task assessment. Journal of Comparative Psychology 105, 145-151.

Psychological well-being: The billion-dollar situation

Year Published: 1991Animal Type: Nonhuman Primate

Citation: Wolfle, T. L. 1991. Psychological well-being: The billion-dollar situation. In: Through the Looking Glass. Issues of Psychological Well-Being in Captive Nonhuman Primates . Novak, M. A. , Petto, A. J. (eds), 119-128. American Psychological Association, Washington, DC.

The effect of various types of produce on behavior in a uni-male and a multi-male group of chimpanzees (Pan troglodytes)

Produce provides effecitve feeding enrichment for group-housed chimpanzees.

Year Published: 1991Animal Type: Chimpanzee, Nonhuman Primate

Citation: Thompson, M. A., Bloomsmith, M. A. 1991. The effect of various types of produce on behavior in a uni-male and a multi-male group of chimpanzees (Pan troglodytes). American Journal of Primatology 24, 137-138 (Abstract).