Vietnamese Journal of Primatology - Frankfurt Zoological Society

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Vietnamese Journal of Primatology (2007) 1, 67-74 Schulze H (in prep.): An identification key for species, subspecies, and local populations of the lorisinae (Loris, Nycticebus, Arctocebus, Perodicticus). Streicher U (2003): Saisonale Veraenderungen in Fellzeichnung und Fellfaerbung beim Zwergplumplori Nycticebus pygmaeus und ihre taxonomische Bedeutung. Zool. Garten (NF) 73, 6, 368-373. Streicher U (2004): Aspects of ecology and conservation of the pygmy loris Nyticebus pygmaeus in Vietnam. PhD dissertation. Ludwig-Maximilians Universitaet, Muenchen. Streicher U (2005): Seasonal body weight changes in pygmy lorises Nycticebus pygmaeus.Verhandlungsber. Zootierkrk. 42, 144-145. Streicher U, Schulze H & Fitch-Snyder H. (in print): Confiscation, rehabilitation and placement of slow lorises. Recommendations to improve the handling of confiscated slow lorises Nycticebus coucang. In: Shekelle (ed.): Primates of the Oriental Night. Treubia. Special issue. 74
Vietnamese Journal of Primatology (2007) 1, 75-83 Diet of the Tonkin snub-nosed monkey (Rhinopithecus avunculus) in the Khau Ca area, Ha Giang Province, Northeastern Vietnam Le Khac Quyet1, Nguyen Anh Duc2, Vu Anh Tai2, Barth W. Wright3 and Herbert H. Covert4 1 Fauna & Flora International - Vietnam Programme, IPO Box 78, 340 Nghi Tam, Hanoi, Vietnam. Corresponding author. 2 Botanical Museum, Faculty of Biology, Hanoi University of Science-Vietnam National University 19 Le Thanh Tong, Hanoi, Vietnam. 3 Department of Anatomy, Kansas City University of Medicine and Biosciences, 1750 Independence Avenue, Kansas City, MO 64106-1453, USA. 4 Department of Anthropology, University of Colorado at Boulder, Boulder, CO 80309-0233, USA. Key words: Tonkin snub-nosed monkey, Rhinopithecus avunculus, endemic, dietary ecology, Vietnam. Summary The Tonkin sub-nosed (TSN) monkey (Rhinopithecus avunculus) is both critically endangered and endemic to northeastern Vietnam. This species is one of the world’s top 25 endangered primates. Rhinopithecus avunculus is known only from three isolated populations that are located in Ha Giang, Tuyen Quang and Bac Kan Provinces. The remaining population is estimated to consist of approximately 150 individuals. The two largest populations are found in Na Hang Nature Reserve (Tuyen Quang Province) and Khau Ca area (Ha Giang Province). The diet of the TSN monkeys consists of a broad range of plants and plant parts. Since 2004, 31 food species have been identified belonging to 21 families. Leaf stems and fruits are the most common part of the TSN monkeys’ diet (27.78%), followed by young leaves (flush leaves) (11.11%), unripe fruit (22.22%), inflorescences and flowers (8.33%) and seeds (2.78%). The plant foods most frequently consumed by the TSN monkeys are Iodes seguini (leaf stems and ripe fruits), Garcinia fagraeoides (leaf stems), Acer tonkinensis (leaf stems), Excentrodendron tonkinensis (flowers), and Brassaiopsis stellata. The toughness of the diet of the TSN monkey was also found to exceed that of other SE Asian colobines at the Endangered Primate Rescue Center, Cuc Phuong, Vietnam. These dietary findings, when coupled with preliminary data on masticatory morphology, reveal unexpected ecomorphological relationships among members of the genus Rhinopithecus that we are examining in greater detail. Thµnh ph«n th¯c ®n cÒa Vo‰c mÚi h’ch (Rhinopithecus avunculus) Î khu v˘c Khau Ca, tÿnh Hµ Giang, ßńg Bæc Vi÷t Nam T„m tæt Vo‰c mÚi h’ch (Rhinopithecus avunculus) lµ loµi linh tr≠Îng Æ∆c h˜u cÒa khu v˘c ßńg Bæc Vi÷t Nam vµ Æang bfi Æe d‰a tuy÷t chÒng. Loµi nµy Æ≠Óc x’p lµ mÈt trong sË 25 loµi linh tr≠Îng nguy c†p nh†t trn th’ giÌi. Vo‰c mÚi h’ch hi÷n chÿ Æ≠Óc bi’t vÌi 3 qu«n th” Î c∏c tÿnh Tuyn Quang, Hµ Giang vµ Bæc Kπn. SË l≠Óng ≠Ìc t›nh cÒa loµi hi÷n chÿ cfln kho∂ng 150 c∏ th”. Hai qu«n th” lÌn nh†t c„ Î Khu b∂o tÂn Thin nhin Na Hang (tÿnh Tuyn Quang) vµ khu v˘c Khau Ca (tÿnh Hµ Giang). Th¯c ®n cÒa vo‰c mÚi h’ch gÂm nhi“u loπi loπi th˘c vÀt. K” tı n®m 2004 Æ’n nay, k’t qu∂ nghin c¯u Æ∑ ghi nhÀn 31 loµi th˘c vÀt, thuÈc 21 h‰, lµ th¯c ®n cÒa vo‰c mÚi h’ch. Thµnh ph«n th¯c ®n cÒa vo‰c mÚi h’ch gÂm c„ qu∂ xanh (25%), qu∂ ch›n (22,2%), cuËng l∏ (22,2%) cfln lπi lµ hoa, l∏ non, l∏ tr≠Îng thµnh vµ hπt. MÈt sË lµ th¯c ®n ≠a th›ch cÒa vo‰c mÚi h’ch lµ: Iodes seguini (cuËng l∏ vµ qu∂ ch›n), Garcinia fagraeoides (cuËng l∏), Acer tonkinensis (cuËng l∏), Excentrodendron tonkinensis (hoa) vµ Brassaiopsis stellata (qu∂ ch›n). ßÈ b“n cÒa mÈt sË loπi th¯c ®n cÒa vo‰c mÚi h’ch cÚng Æ∑ Æ≠Óc nghin c¯u vµ cho th†y h¨n hºn c∏c loµi khÿ ®n l∏ cÒa vÔng ßńg Nam É Æang Æ≠Óc nuí nhËt tπi Trung t©m C¯u hÈ ThÛ Linh tr≠Îng Nguy c†p, CÛc Ph≠¨ng, Vi÷t Nam. 75
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Introduction The first announcement
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Foreword Vietnam ranks among the to
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Preface Vietnam and its neighbourin
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Vietnamese Journal of Primatology (
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