Abstract
In Vietnam, two chevrotain species of the genus Tragulus are recorded: the Vietnam chevrotain (T. versicolor) and the Lesser mousedeer (T. kanchil). This study analysed 26 cranial morphological parameters from 27 adult skull specimens (7 T. versicolor and 20 T. kanchil) to identify diagnostic characteristics between the two species. Descriptive statistics, Principal component analysis, Mann-Whitney U test, and MANOVA all revealed clear differences in overall skull morphology. Six skull and jaw length parameters –– basal-palatal length, mandible length, condylobasal length, maxillary lateral length, lower tooth row length, and upper tooth row length –– were the most consistent and distinctive for distinguishing the two species. These findings provide the first set of morphological criteria for identifying and classifying Tragulus species in Vietnam and also support conservation work and specimen identification.
References
- Meijaard E, Groves CP. A taxonomic revision of the Tragulus mouse-deer (Artiodactyla). Zool J Linn Soc 2004;140:63-102.
- Viện hàn lâm Khoa học và Công nghệ Việt Nam. Sách Đỏ Việt Nam – Tập 1. Động vật. Hà Nội: NXB Khoa học tự nhiên và Công nghệ; 2024.
- Thomas O. LXXIV.—Three new Asiatic mammals. Annals and Magazine of Natural History. 1910;5(30):534-6.
- Kuznetsov GV, Borissenko AV. A new record of Tragulus versicolor (Artiodactyla, Tragulidae) from Vietnam, and its sympatric occurrence with T. kanchil. Russ J Theriol 2004;3:9-13.
- Nguyen A, Tran VB, Hoang DM, Nguyen TAM, Nguyen DT, Tran VT, et al. Camera-trap evidence that the silver-backed chevrotain Tragulus versicolor remains in the wild in Vietnam. Nat Ecol Evol 2019;3:1650-4.
- Nguyen TT, Hoang HQ, Ho ATN, Nguyen TT, Trinh HT Le, Nguyen MTP, et al. Molecular analysis reveals the evolutionary distinctiveness of the Silver-backed Chevrotain within the genus Tragulus. Mammalia. 2024;88(6):608-12.
- Bui TA, Thi T, Le T, Thi T, Vo B, Hoang HQ, et al. Combining the techniques of using DNA barcoding and species-specific primers in identifying chevrotain in Vietnam. TNU Journal of Science and Technology 2025;230:209-16.
- Endo H, Fukuta K, Kimura J, Sasaki M, Stafford BJ. Geographical variation of the skull of the lesser mouse deer. Journal of Veterinary Medical Science 2004;66:1229-35.
- Guzmán JA, Rössner GE. Skull morphometrics of Tragulus and Moschiola for an improved classification of tragulid collections. Mammalian Biology 2018;90:78-88.
- Hammer, Harper DAT, Ryan PD. PAST: Paleontological statistics software package for education and data analysis. Palaeontologia Electronic. 2001.
- Nguyen A, Tilker A, Le QT, Nguyen M, Tran VT, Luu HT, et al. Ecotones Shape Ground- Dwelling Mammal and Bird Diversity Along a Habitat Gradient in the Southern Coastal Dry Forests of Vietnam. Biotropica. 2025;1.
- Hảo NH. Nghiên cứu bảo tồn quần xã thú Móng guốc chẵn (Artiodactyla) ở Khu bảo tồn thiên nhiên-văn hóa Đồng Nai, tỉnh Đồng Nai [Luận án tiến sĩ]. Hà Nội: Trường Đại học Lâm nghiệp; 2016.

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