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Laboratory Primate Newsletter LABORATORY PRIMATE NEWSLETTER Vol. 47, No. 4 October 2008 JUDITH E. SCHRIER, EDITOR JAMES S. HARPER, GORDON J. HANKINSON AND LARRY HULSEBOS, ASSOCIATE EDITORS MORRIS L. POVAR, CONSULTING EDITOR ELVA MATHIESEN, ASSISTANT EDITOR ALLAN M. SCHRIER, FOUNDING EDITOR, 1962-1987 Published Quarterly by the Schrier Research Laboratory Psychology Department, Brown University Providence, Rhode Island ISSN 0023-6861 POLICY STATEMENT The Laboratory Primate Newsletter provides a central source of information about nonhuman primates and re- lated matters to scientists who use these animals in their research and those whose work supports such research. The Newsletter (1) provides information on care and breeding of nonhuman primates for laboratory research, (2) dis- seminates general information and news about the world of primate research (such as announcements of meetings, research projects, sources of information, nomenclature changes), (3) helps meet the special research needs of indi- vidual investigators by publishing requests for research material or for information related to specific research prob- lems, and (4) serves the cause of conservation of nonhuman primates by publishing information on that topic. As a rule, research articles or summaries accepted for the Newsletter have some practical implications or provide general information likely to be of interest to investigators in a variety of areas of primate research. However, special con- sideration will be given to articles containing data on primates not conveniently publishable elsewhere. General descriptions of current research projects on primates will also be welcome. The Newsletter appears quarterly and is intended primarily for persons doing research with nonhuman primates. Back issues may be purchased for $10.00 each. We are no longer printing paper issues, except those we will send to subscribers who have paid in advance. We will not accept future subscriptions, unless subscribers are willing to pay $100/year. (Please make checks payable to the Brown University Psychology Department.) Readers with ac- cess to electronic mail may receive a notice when a new issue is put on the Website by sending the message sub- scribe LPN-WARN your-own-name to [email protected]. (Send the message subscribe LPN-PDF to receive PDF files by e-mail; or the message subscribe LPN-L to receive the nongraphic contents of each issue.) Current and back issues of the Newsletter are available on the World Wide Web at <http://www.brown.edu/primate>. Persons who have absolutely no access to the Web, or to the electronic mail- ing, may ask to have paper copies sent to them. The publication lag is typically no longer than the three months between issues and can be as short as a few weeks. The deadline for inclusion of a note or article in any given issue of the Newsletter has in practice been somewhat flexible, but is technically the tenth of December, March, June, or September, depending on which issue is scheduled to appear next. Reprints will not be supplied under any circumstances, but authors may reproduce their own articles in any quantity. PREPARATION OF ARTICLES FOR THE NEWSLETTER. – Articles, notes, and announcements may be submitted by mail, e-mail, or computer disk, but a printed copy of manuscripts of any length or complexity should also be sent by regular mail.. Articles in the References section should be referred to in the text by author(s) and date of publication, e.g., Smith (1960) or (Smith & Jones, 1962). Names of journals should be spelled out com- pletely in the References section. Latin names of primates should be indicated at least once in each note and article. In general, to avoid inconsistencies within the Newsletter, the Latin names used will be those in Mammal Species of The World: A Taxonomic and Geographic Reference, 2nd Ed. D. E. Wilson & D. M. Reeder (Eds.). Washington, DC: Smithsonian Institution Press, 1993. For an introduction to and review of primate nomenclature see the chapter by Maryeva Terry in A. M. Schrier (Ed.), Behavioral Primatology: Advances in Research and Theory (Vol. 1). Hillsdale, NJ: Lawrence Erlbaum Associates, 1977. All correspondence concerning the Newsletter should be addressed to: Judith E. Schrier, Psychology Department, Box 1853, Brown University Providence, Rhode Island 02912 [401-863-2511; FAX: 401-863-1300] e-mail address: [email protected] Current and back issues of the Newsletter are available on the World Wide Web at http://brown.edu/primate ACKNOWLEDGMENTS The Newsletter is supported by Brown University Cover photograph of a Douc Langur (Pygathrix nemaeus), taken at the San Diego Zoo by Paul G. Wilde, June 1997 Copyright © 2008 by Brown University Creating Housing to Meet the Behavioral Needs of Long-tailed Macaques C. D. Waitt1, Paul E. Honess1, and Moshe Bushmitz2 1Dept of Veterinary Services, University of Oxford, Oxford, U.K.; and 2BFC, Mazor, Tel Aviv, Israel Introduction Long-tailed macaques (Macaca fascicularis) are one sanctuaries, particularly as a result of rescue from illegal of the most widespread primates found in captivity. and private trade, but also due to retirement from research Though uncommon in zoos (ISIS database, 2008), long- and breeding facilities (C.W., P.H., & M.B., pers. obs.). tailed macaques are found in large numbers in breeding Despite their large numbers in captivity, little information centers and research facilities around the world (Carlsson has been dedicated to providing environments that meet et al., 2004; Hagelin, 2004). They also are found in many their species-typical behavioral needs. Figure 1: External view of the two-story housing system. Designing for Behavioral Needs When designing captive environments to meet ani- most of their time at heights of 12 m (39.4 ft) or less in mals’ behavioral needs, we should use the choices and the lower canopy and understory, though they also go preferences that animals make in both the wild and cap- down to the ground to forage (Ungar, 1996). Research on tivity (Dawkins, 2003). In their natural habitat, long- captive long-tailed macaques informs us that they have tailed macaques live in a variety of tropical forested re- strong preferences for higher parts of their enclosures gions throughout Southeast Asia (Rowe, 1996; Supriatna (Watson & Shively, 1996). Preferences for height are et al., 1996). They use a variety of substrates, spending most likely linked to feelings of safety, as long-tailed ma- caques exhibit a vertical flight response when frightened in the wild (van Schaik et al., 1983) and captivity (C.W., Second author’s address: Dept of Veterinary Services, Univ. of P.H., & M.B., pers. obs). Not providing adequate vertical Oxford, Oxford, U.K. [e-mail: [email protected]]. 1 flight space may lead animals to feeling trapped and can cealment from frightening stimuli, as hiding is a common cause stress and anxiety-related behaviors. For example, strategy employed by wild long-tailed macaques when long-tailed macaques housed in taller cages were found to threatened by predators, including humans (van Schaik et exhibit less self-directed stereotypies than those in shorter al., 1983). Captive environments should also allow for cages (Watson & Shively, 1996). this by incorporating visual barriers within the enclosure design. This allows animals to increase or decrease visual Not only should long-tailed macaques be provided contact with each other as they choose, as well as hide with enclosures that are tall, but it is also important to from caretakers or visitors and divide into sub-groupings. maximize the use of space. As long-tailed macaques Various studies have demonstrated the benefits of visual choose to exploit a variety of heights and substrates in the barriers in reducing aggression and related injuries in wild, the captive environment should also allow for this. other macaque species (e.g., McCormack & Megna, 2001; This can be achieved through the careful placement of Maninger et al., 1998; Westergaard et al., 1999). Visual plenty of perches at different heights. Providing an ade- quate amount of well-spaced perching is important for avoiding agonism in primates (Nakamichi & Asanuma, 1998; Neveu & Deputte, 1996), as it allows animals to space themselves as they desire and reduces risk of ag- gressive competition. Figure 3: Multi-level perching around enclosure walls and in the center allows animals to space themselves as they desire and avoids competition over space. barriers can even be effective for pair-housed macaques, Figure 2: Pop-holes in mezzanine floor allowing access be- where they have been demonstrated to promote affiliation tween the two stories. (Reinhardt & Reinhardt, 1991). Many primate species, including long-tailed ma- Two-story Housing Concept and Design caques, which live in multi-male groups in the wild, are The two-story housing system we describe here was kept in small, single-male groups in captivity. Long- designed to specifically address the macaques’ behavioral tailed macaques naturally form mixed-sex groups ranging needs and is currently used to house multi-male, multi- in size from 6 to 58 individuals; when numbers are large, female groups of long-tailed macaques at BFC, a breeding long-tailed macaque groups split up into smaller foraging facility in Israel. The concept is to create an environment parties based on social rank to avoid feeding competition that resembles the situation in the wild, where animals can (Wheatley, 1980; van Noordwijk & van Schaik, 1987; van occupy different arboreal levels, while also being able to Schaik & van Noordwijk, 1988). Many facility managers exploit the ground. The height is 4 m, and while the and caretakers argue that males of these species are too footprint is 36 m2, there is a total floor area of 72 m2 due aggressive to keep together (C.W., P.H., & M.B., pers. to the presence of a wooden mezzanine floor at 2 m obs.). This is likely to be due in large part to the fact that (Figure 1).
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