Vietnam Primate Conservation Status Review 2002 - Hoang Lien ...

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Vietnam Primate Conservation Status Review Part 2: LEAF MONKEYS DISTRIBUTION OF HATINH LANGUR (Trachypithecus laotum hatinhensis) IN VIETNAM BAŒN ÑOÀ PHAÂN BOÁ LOAØI VOOÏC HATINH ÔŒ VIEÄT NAM 20 0 N 19 0 N 18 0 N 17 0 N 50 NGHEÄ AN LAOS THAILAND Puø Maùt CAMBODIA Puø Hoaït Puø Huoáng CHINA VIETNAM 105 0 E Xuaân Lieân LEGEND-CHUÙ GIAŒI Country Border / Ranh giôùi quoác gia Provincial Border / Ranh giôùi tænh Records of Hatinh langur Ghi nhaän veà vooïc Haø Tónh Until 1988 (tröôùc naêm1988) 1989-1994 / Provisional (taïm thôøi) 1995-2002 / Provisional (taïm thôøi) 1995-2002 / Confirmed (ñaõ xaùc nhaän) Protected Area / Khu baœo veä THANH HOÙA Beán En Nuùi Chung Vuõ Quang HAØ TÓNH Hoøn Meâ (bieån) 0 Keœ Goã 106 0 E Nghóa Höng Phong Nha 30 60 KM QUAŒNG BÌNH
3.2 HATINH LANGUR - Trachypithecus laotum hatinhensis primates were not seen. The same month, one group of at least 4 individuals was observed near a cliff close to basecamp 1 in the Suoi Chay valley (17 O 30.847’N / 106 O 12.776’E). At the same time and same location several loud calls were heard in an opposite direction. In July, one group of at least 5 animals was seen regularly in a sleeping cave at the Eo Cap site (17 O 32.638’N / 106 O 12.687’E). In August 1998, one group of at least five members was heard and briefly observed in a sleeping cave at the Hung Lao site (17 O 32.827’N / 106 O 12.809’E). White cheeks could be seen. Two animals with white cheeks were seen in October 1998, in the Ta Ty area of Cha Lo Village (ca. 17 O 43’N / 105 O 47’E). A single animal was observed in the south of Hang Ca Tuc area (17 O 35’N / 106 O 00’E) in October 1998. Head pelage was not seen. In September and October 1998, vocalizations were heard twice to the east of Cha Noi (17 O 38’N / 106 O 05’E), once to the south of Phu Nhieu (17 O 40’N / 106 O 02’E), seven times in the Suoi Chan Loong valley (from four different places) (17 O 37’N / 106 O 00’E), eight times in the Hang Ca Tuc area (from at least four locations) (17 O 35’N / 106 O 00’E), once from the southern side of Mo O valley (17 O 40’N / 105 O 57’E), four times in the Suoi Mo Sang valley (from different locations on one occasion) (17 O 38’N / 105 O 55’E), and three times in the Suoi Cat valley (from seemingly three different locations on one occasion) (17 O 43’N / 105 O 47’E). According to nature reserve rangers, at least three groups live on the cliffs surrounding Suoi Chayriver where they are easily encountered in the early morning. Two animals were seen by FFI staff in this location during a short visit in June 2000 (Lormee, unpubl.). This river valley is currently being subjected to heavy disturbance as a road is being built along the side of the river. The effect of this development on the primates is currently unknown. According to Timmins et al. (1999), very few sightings and vocalizations were recorded and this suggested a reduction of the population. The same authors hypothesise that arrival and departure from sleeping sites in the dark, as well as the probable reduction of the vocal activity (compared with areas of comparable habitat) may reflect a change of behaviour in response to the human pressure. Khe Net Nature Reserve, Tuyen Hoa District (QUANG BINH) Special use forest: Nature reserve Hatinh langur status: Occurrence confirmed, last evidence in 2000 (Le Trong Trai, pers. comm., 2000) Tuyen Hoa District is the origin of the type and paratype described by Dao Van Tien (1970). The type, one adult female (ZMVNU, 90) was collected in December 1942 by Chau in Xom Cuc locality. The paratype, one male skin, was collected in 1964 in Ninh Hoa Commune during a survey organised by the State Committee for Science and Technology (museum and collector unknown). During their survey for Hatinh langur in 1995 and 1996, Pham Nhat et al. (1996a) could not find any information about this species in the area. However, Le Trong Trai (pers. comm., 2000) observed three langurs in June 2000 in the limestone forest of Kim Lu area, Kim Hoa Commune (17 O 56,917’N / 105 O 57,937’E). The animals were too far away to actually see whether the head pelage was consistent with hatinhensis or with the black morph “ebenus”. This could be the first record of the Hatinh langur in the area. Local hunters reported that 20 to 30 animals still inhabited the area. Locations where Hatinh langurs are believed to be extinct Ba Ren and Truong Son, Bo Trach District (QUANG BINH) No information was collected by Pham Nhat et al. (1996a) in the area during a survey with a special emphasis on Hatinh langur in 1995 and 1996. The species is believed to be locally extinct (Pham Nhat et al., 1996a). 51
Page 1: Tilo Nadler - Frank Momberg - Nguye
Page 4 and 5: THE DESIGNATION OF GEOGRAPHICAL ENT
Page 6 and 7: iv 3.4 Delacour’s langur (Trachyp
Page 8 and 9: vi Acknowledgement Fauna & Flora In
Page 10 and 11: viii Abbreviations Key to abbreviat
Page 12 and 13: Red-shanked douc langurs; group of
Page 14 and 15: Vietnam Primate Conservation Status
Page 18 and 19: 3 2 1 4 1. Indochinese Silvered lan
Page 27 and 28: 3. Langurs
Page 29 and 30: 3. Langurs 3.0 An introduction to t
Page 31 and 32: The basic social organisation for t
Page 33 and 34: 3.1 Francois’ langur
Page 35 and 36: 3.1 Francois’ langur Trachypithec
Page 37 and 38: DISTRIBUTION OF FRANCOIS' LANGUR (T
Page 39 and 40: 3.1 FRANCOIS’ LANGUR - Trachypith
Page 41 and 42: 3.1 FRANCOIS’ LANGUR - Trachypith
Page 43 and 44: Discussed records Quang Ninh Provin
Page 45: 3.1 FRANCOIS’ LANGUR - Trachypith
Page 48 and 49: 2 3 6 1 4 5 1. Hatinh langur; ad. m
Page 58 and 59: 1 2 3 4 1. Cat Ba langur; ad. femal
Page 71 and 72: 3.4. Delacour’s langur
Page 73 and 74: 3.4 Delacour’s langur Trachypithe
Page 75 and 76: 3.4 DELACOUR’S LANGUR - Trachypit
Page 77 and 78: 3.4.4 Delacour’s langur records 3
Page 83 and 84: Locations where Delacour’s langur
Page 85 and 86: 3.4.5 Status 3.4 DELACOUR’S LANGU
Page 87 and 88: 3.4.6 Recommendations for conservat
Page 91 and 92: 3.5. Grey langur
Page 93 and 94: 3.5 Grey langur Trachypithecus crep
Page 95 and 96: Distribution in China 3.5 GREY LANG
Page 97 and 98: 3.5 GREY LANGUR - Trachypithecus cr
Page 99 and 100: 3.5 GREY LANGUR - Trachypithecus cr
Page 101 and 102: Vu Quang National Park (HA TINH) Sp
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Ha Tay Province 20 O 34’-21 O 17
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3.6. Indochinese Silvered langur
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3.6 Indochinese Silvered langur Tra
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3.6 INDOCHINESE SILVERED LANGUR - T
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4.0. Douc langurs
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4. Douc langurs 4.0 An introduction
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4 DOUC LANGURS Groups are character
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4.1.2 Black-shanked douc langur Pyg
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4 DOUC LANGURS DISTRIBUTION OF RED-
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4 DOUC LANGURS DISTRIBUTION OF BLAC
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4 DOUC LANGURS One infant skull (IE
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4 DOUC LANGURS Bach Ma National Par
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4 DOUC LANGURS My Town and Ro Villa
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4 DOUC LANGURS very poor secondary
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A Yun Pa Nature Reserve (GIA LAI) S
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Krong No District (DAK LAK) Special
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4 DOUC LANGURS The Ra Glai minority
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Dinh Quan District (DONG NAI) Speci
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4 DOUC LANGURS Obviously there are
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4 DOUC LANGURS ✱ The establishmen
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2 3 1 1. Tonkin snub-nosed monkey;
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Vietnam Primate Conservation Status
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DISTRIBUTION OF TONKIN SNUB-NOSED M
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5 2 3 1 4 6 1. Hunters with living
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7.0. Conservation Policy
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7. Conservation policy 7.1 Hunting
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The aims of an ex-situ programme sh
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7 CONSERVATION POLICY Table 7.4-1 R
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8. References 8 REFERENCES Adler, H
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8 REFERENCES Boonratana, R., and Le
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8 REFERENCES Dao Van Tien. 1970. Su
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8 REFERENCES Fooden, J. 1976a. Prov
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8 REFERENCES Hill, W. C. O. 1934. A
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8 REFERENCES Le Khac Quyet and Trin
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8 REFERENCES Lippold, L. K. 1995a.
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Monestrol, H. (ed.). 1952. Chasses
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8 REFERENCES Ngo Van Tri. 1999b. Th
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8 REFERENCES Pham Nhat, Nguyen Xuan
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8 REFERENCES Simonetta, A. 1957. Ca
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8 REFERENCES Vermeulen, J. and Whit
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Appendix 1 Leaf monkey species in t
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Appendix 2 Selected areas of high v
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8 APPENDIX: 2 the surrounding area
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8 APPENDIX: 2 Forests in the southe
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Ke Go Nature Reserve (HA TINH) Spec
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8 APPENDIX: 2 was decreed with a to
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8 APPENDIX: 2 Elevation: reaching 1
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8 APPENDIX: 2 regeneration of everg
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Appendix 3 IUCN RED LIST CATEGORIES
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EXTINCT (EX) A taxon is Extinct whe
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B Extent of occurrence estimated to
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D Population estimated to number le
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The Primate Conservation Status Rev
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