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

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概要

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• 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.

• 公益社団法人 日本獣医学会の論文

著者

• Lee Hang

  Conservation Genome Resource Bank For Korean Wildlife

• Min Mi-sook

  Conservation Genome Resource Bank For Korean Wildlife Bk21 Program For Veterinary Science And Colleg

• OSHIDA Tatsuo

  Laboratory of Wildlife Biology, Obihiro University of Agriculture and Veterinary Medicine

• KIMURA Junpei

  Department of Anatomy and Cell Biology, College of Veterinary Medicine, Seoul National University, Seoul 151–742, Korea

• LEE Hang

  Conservation Genome Resource Bank for Korean Wildlife (CGRB), Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul 151–724, Korea

• SUZUKI Satoshi

  The Kyoto University Museum, Kyoto University, Sakyo, Kyoto 606–8501, Japan

• KIM Sang-In

  Conservation Genome Resource Bank for Korean Wildlife (CGRB), Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul 151–724, Korea

• OH Jinwoo

  Department of Anatomy and Cell Biology, College of Veterinary Medicine, Seoul National University, Seoul 151–742, Korea

• KOYABU Daisuke

  The Kyoto University Museum, Kyoto University, Sakyo, Kyoto 606–8501, Japan

• Min Mi-Sook

  Conservation Genome Resource Bank for Korean Wildlife (CGRB), Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University

• MIN Mi-Sook

  Conservation Genome Resource Bank for Korean Wildlife (CGRB), Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul 151–724, Korea

• OSHIDA Tatsuo

  Laboratory of Molecular Ecology, Department of Biology, Tunghai University

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