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

Sang-In KIM; Satoshi SUZUKI; Jinwoo OH; Daisuke KOYABU; Tatsuo OSHIDA; Hang LEE; Mi-Sook MIN; Junpei KIMURA

doi:10.1292/jvms.12-0281

Anatomy

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

Sang-In KIM, Satoshi SUZUKI, Jinwoo OH, Daisuke KOYABU, Tatsuo OSHIDA, Hang LEE, Mi-Sook MIN, Junpei KIMURA

著者情報

Sang-In KIM
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
Satoshi SUZUKI
The Kyoto University Museum, Kyoto University, Sakyo, Kyoto 606–8501, Japan
Jinwoo OH
Department of Anatomy and Cell Biology, College of Veterinary Medicine, Seoul National University, Seoul 151–742, Korea
Daisuke KOYABU
The Kyoto University Museum, Kyoto University, Sakyo, Kyoto 606–8501, Japan
Palaeontological Institute and Museum, University of Zurich, Zurich 8006, Switzerland
Tatsuo OSHIDA
Laboratory of Wildlife Biology, Obihiro University of Agriculture and Veterinary Medicine, Obihiro 080–8555, Japan
Hang LEE
Conservation Genome Resource Bank for Korean Wildlife (CGRB), Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul 151–724, Korea
Mi-Sook MIN
Conservation Genome Resource Bank for Korean Wildlife (CGRB), Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul 151–724, Korea
Junpei KIMURA
Department of Anatomy and Cell Biology, College of Veterinary Medicine, Seoul National University, Seoul 151–742, Korea

キーワード: craniodental morphology, Nyctereutes procyonoides koreensis, raccoon dog, sexual dimorphism

ジャーナルフリー

2012 年 74 巻 12 号 p. 1609-1616

DOI https://doi.org/10.1292/jvms.12-0281

Browse “Advance online publication” version

詳細

抄録

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.

責任著者(Corresponding author)

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