Sexual Dimorphism of Craniodental Morphology in the Raccoon Dog Nyctereutes procyonoides from South Korea

Journal of Veterinary Medical Science

Jinwoo OH⁴  Tatsuo OSHIDA²  Daisuke KOYABU¹  Mi-Sook MIN³  Sang-In KIM³  Junpei KIMURA⁴  Satoshi SUZUKI¹  Hang LEE³ 

[1] The Kyoto University Museum, Kyoto University, Sakyo, Kyoto 606–8501, Japan;Laboratory of Wildlife Biology, Obihiro University of Agriculture and Veterinary Medicine, Obihiro 080–8555, Japan;Conservation Genome Resource Bank for Korean Wildlife (CGRB), Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul 151–724, Korea;Department of Anatomy and Cell Biology, College of Veterinary Medicine, Seoul National University, Seoul 151–742, Korea

关键词: craniodental morphology;    Nyctereutes procyonoides koreensis;    raccoon dog;    sexual dimorphism;   

DOI  :  10.1292/jvms.12-0281

学科分类：兽医学

来源: Japanese Society of Veterinary Science

【 摘 要 】

References(23)Cited-By(4)We examined sexual dimorphism in the craniodental traits of the raccoon dog Nyctereutes procyonoides from South Korea. Univariate comparisons of skull (cranium and mandible) and dental measurements revealed a small extent of sexual dimorphism in some measurements. The most indicative dimorphic measurements were the breadths of the upper and lower canines which were around 8% larger in male specimens on average. On the other hand, multivariate analyses using only skull traits showed slightly a clearer separation between sexes than those using only dental ones. This discrepancy may be derived from a higher variability in dental traits than in those of the skull. In conclusion, sexual dimorphism within N. procyonoides of South Korea is present, but was not so pronounced as for other local populations. However, measurements showing significant sexual dimorphism varied between different localities. This suggests that the selective forces acting upon craniodental morphology of each sex vary between populations of the species.

【 授权许可】

Unknown