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Behavioral Ecology of Phayre's Leaf Monkeys at Phu Khieo Wildlife Sanctuary (October 2000; ongoing)
Field Study in Asia
Web Site:
Location of Site: THAILAND, Phu Khieo Wildlife Sanctuary; Huai Mai Sot Yai

Director: Andreas Koenig
Phone: 1-631-632-1513   Fax: 1-631-632-9165   E-Mail:
Circle Rd, SBS-Bdg. S-517, Stony Brook, New York 11794-4364 UNITED STATES
Department: Anthropology
Institution: Stony Brook University

Sponsoring Institution(s): Kasetsart University, Mahidol University, King Mongkut's University

Research Objectives: Testing socio-ecological models regarding costs and benefits of group life, ecology of social relationships, and reproductive strategies. Organization of training workshops on primate ecology and conservation for Thai forest personnel, students, and lecturers.

Field Positions and Volunteers: 1-3 volunteer positions per year for 1 year. Available jobs are announced annually (ca. September/ October) on the Primate-Jobs and other webpages.

Species Studied: Trachypithecus phayrei crepusculus (Phayre's leaf monkey)

Other Species at Site: Hylobates lar (lar gibbon), Macaca arctoides (stump-tailed macaque), Macaca assamensis (Assamese macaque), Macaca leonina (northern pigtail macaque), Macaca mulatta (rhesus macaque), Nycticebus bengalensis (Bengal slow loris)

Publications: Borries C, Larney E, Derby AM, Koenig A. 2004. Temporary absence and dispersal in Phayreâs leaf monkeys (Trachypithecus phayrei). Folia Primatol 75:27-30.
Borries C, Larney E, Kreetiyutanont K, Koenig A 2002. The diurnal primate community in a dry evergreen forest in Phu Khieo Wildlife Sanctuary, Northeast Thailand. Nat Hist Bull Siam Soc 50:75-88.
Borries C, Larney E, Lu A, Ossi K, Koenig A. 2008. Costs of group size: lower developmental and reproductive rates in larger groups of leaf monkeys. Behav Ecol 19:1186-1191.
Hassel-Finnegan HM, Borries C, Larney E, Umponjan M, Koenig A. 2008. How reliable are density estimates for diurnal primates? International Journal of Primatology 29:1175-1187.
Koenig A, Larney E, Lu A, Borries C. 2004. Agonistic behavior and dominance relationships in female Phayreâs leaf monkeys â Preliminary results. Am J Primatol 64:351-357.
Lloyd E, Kreetiyutanont K, Prabnasuk J, Grassman Jr LI, Borries C. 2006. Observation of Phayreâs leaf monkeys mobbing a clouded leopard at Phu Khieo Wildlife Sanctuary (Thailand). Mammalia 70:158-159.
Pages G, Lloyd E, Suarez SA. 2005. The impact of geophagy on ranging behaviour in Phayreâs leaf monkeys (Trachypithecus phayrei). Folia Primatol 76:342-246.

Last Updated: 2010-02-20

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