Vietnamese Journal of Primatology - Frankfurt Zoological Society

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Vietnamese Journal of Primatology (2007) 1, 75-83 Mandibular Width (Log 10) Symphyseal Height (Log 10) 82 1.05 0.95 0.85 1.50 1.45 1.40 1.35 1.30 Tc Tc Pc Pc Ra Cg Tg Tp Ta 0.75 1.80 1.85 1.90 1.95 Mandibular Length (Log 10) Ra Pn Fig. 5. Comparison of the mediolateral width of the mandibular corpus to mandibular length among a sample of colobines from Southeast Asia and Africa. Cg = Colobus guereza, Nl = Nasalis larvatus, Pc = Pygathrix cinerea, Pn = P. nemaeus, Ra = Rhinopithecus avunculus, Rr = R. roxellana, Ta = Trachypithecus auratus, Tc = T. cristatus, Tg = T. germaini, Tp = T. phayrei. Cg Tp Pn Ta Tg 1.25 1.80 1.85 1.90 1.95 Mandibular Length (Log 10) Fig. 6. Comparison of symphyseal height to mandibular length among a sample of colobines from Southeast Asia and Africa (see species key for Fig. 4). Cg = Colobus guereza, Nl = Nasalis larvatus, Pc = Pygathrix cinerea, Pn = P. nemaeus, Ra = Rhinopithecus avunculus, Rr = R. roxellana, Ta = Trachypithecus auratus, Tc = T. cristatus, Tg = T. germaini, Tp = T. phayrei. Rr Rr Nl Nl foreseeable future. Forthcoming data should allow us to better understand the effects of seasonality on the diet of this extremely rare primate. Acknowledgements We thank the leaders of Ha Giang People’s Committee and the Ha Giang Forestry Protection Department for allowing us to conduct this research. We also thank the citizens of Tung Ba Commune for p r o v i d i n g accommodations before and after fieldwork at Khau Ca. Special thanks go to Mr. Khoan, Mr. Nhieu, Mr. Gioi, Mr. Thanh, Mr. Truyen, and Mr. Khoán for their assistance in the field. Conversations with Le Xuan Canh, Vu Ngoc Thanh, Ramesh Boonratana, Sonja Wolters, Bettina Martin, and Tilo Nadler helped us to better understand the challenges for successfully conserving the Tonkin snub-nosed monkey. We thank Jonathan O’Brien and Larry Ulibarri for their assistance with data collection and for commenting on an earlier version of this manuscript. This research has been funded by Fauna and Flora International, Vodafone Group Plc., FFI/Flagship Species Fund, the Singapore Zoo, Margot Marsh Biodiversity Foundation, Primate Conservation Inc, the Zoological Society of San Diego, and National Geographic.
Le Khac Quyet et al.: Diet of the Tonkin snub-nosed monkey References Boonratana R & Le Xuan Canh (1998a): Preliminary observations of the ecology and behavior of the Tonkin snub-nosed monkey (Rhinopithecus [Presbytiscus] avunculus) in Northern Vietnam. In: Jablonski (ed.): The Natural History of the Doucs and Snub-nosed Monkeys; pp. 207-215. Singapore. Boonratana R & Le Xuan Canh (1998b): Conservation of Tonkin snub-nosed monkeys (Rhinopithecus [Presbyticus] avunculus) in Vietnam. In: Jablonski (ed.): The Natural History of the Doucs and Snub-nosed Monkeys; pp. 315-322. Singapore. Covert HH, Le Khac Quyet, & Wright BW (in press): On the Brink of Extinction: research for the conservation of the Tonkin snub-nosed monkey (Rhinopithecus avunculus). In: Fleagle (ed.): Papers in Honor of Elwyn Simons. New York, NY. Cowlishaw G & Dunbar R (2000): Primate Conservation Biology. Chicago. Dollman G (1912): A new snub-nosed monkey. Proc. Zool. Soc. London 106, 503-504. Le Khac Quyet (2002): Distribution and conservation of Tonkin snub-nosed monkey (Rhinopithecus avunculus) in Du Gia Nature Reserve, Ha Giang Province, Northeast Vietnam. Unpubl. report to Fauna and Flora International – Vietnam Programme, Hanoi. Le Khac Quyet (2004): Distribution and conservation of Tonkin snub-nosed monkey (Rhinopithecus avunculus) in Du Gia Nature Reserve, Ha Giang Province, Northeast Vietnam. In Nadler, Streicher, & Ha Thang Long (eds.): Conservation of Primates in Vietnam; pp 58-62. Frankfurt Zoological Society. Hanoi. Le Xuan Canh & Boonratana R (2006): A Conservation Action Plan for the Tonkin Snub-Nosed Monkey in Viet Nam. Institute for Ecology and Biological Resources & Primate Conservation Inc. Hanoi. Li Baoguo, Zhang Peng, Watanabe K, Tan CL, Fukuda F & Wada K (2003): A dietary Shift in Sichuan snub-nosed monkeys. Acta Therologica Sinica 23, 358-360. Lucas PW, Beta T, Darvell BW, Dominy NJ, Essackjee HC, Lee PKD, Osorio D, Ramsden L, Yamashita N & Yuen TDB (2001): Field kit to characterize physical, chemical and spatial aspects of potential primate foods. Folia Primatol. 72, 11-25. Mittermeier RA & Cheney DL (1986): Conservation of primates and their habitats. In: Smuts, Cheney, Seyfarth, Wrangham & Strusaker (eds.): Primate Societies. Chicago; pp 477-490. Chicago. Mittermeier RA, Valladares-Pádua C, Rylands AB, Eudey AA, Butynski TM, Ganzhorn JU, Kormos R, Aguiar JM, & Walker S (2005): Primates in Peril. The World’s 25 most endangered primates 2004-2006. Primate Conservation 20, 1-28. Nadler T, Momberg F, Nguyen Xuan Dang & Lormée N (2003): Vietnam Primate Conservation Status Review 2002. Part 2: Leaf Monkeys. Frankfurt Zoological Society and Fauna & Flora Internatioan-Indochina Programme. Hanoi. Nguyen Anh Duc, Vu Anh Tai & Le Khac Quyet (2006): Preliminary survey of flora in Khau Ca area, Ha Giang Province. Unpublished report to Fauna & Flora International-Vietnam Program and National University Vietnam. Hanoi. Sun Dun Yuan, Gong Yazhen, Lei Xiaoping, Qui Yang, Sale J, Kirkpatrick C, Ballou J & Seal U (1999): CBSG Quizhou Snub-Nosed Monkey Conservation and PHVA Workshop Report. Captive Breeding Specialist Group. Apple Valley. Wei Ding & Qi-Kun Zhao (2004): Rhinopithecus bieti at Tacheng, Yunnan: Diet and Daytime activity. Int. J. Primatol. 25, 583-598. Wright BW (2004): Ecological Distinctions in Diet, Food Toughness, and Masticatory Anatomy in a Community of Six Neotropical Primates in Guyana, South America. PhD dissertation. University of Illinois, Urbana-Champaign. 83
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