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

被引：10

作者：

Kim, Sang-In ^{[1
,2
]}

Suzuki, Satoshi ^{[3
]}

Oh, Jinwoo ^{[2
]}

Koyabu, Daisuke ^{[3
,4
]}

Oshida, Tatsuo ^{[5
]}

Lee, Hang ^{[1
]}

Min, Mi-Sook ^{[1
]}

Kimura, Junpei ^{[2
]}

机构：

[1] Seoul Natl Univ, Conservat Genome Resource Bank Korean Wildlife CG, Res Inst Vet Sci, Coll Vet Med, Seoul 151724, South Korea

[2] Seoul Natl Univ, Dept Anat & Cell Biol, Coll Vet Med, Seoul 151742, South Korea

[3] Kyoto Univ, Kyoto Univ Museum, Sakyo Ku, Kyoto 6068501, Japan

[4] Univ Zurich, Palaeontol Inst & Museum, CH-8006 Zurich, Switzerland

[5] Obihiro Univ Agr & Vet Med, Lab Wildlife Biol, Obihiro, Hokkaido 0808555, Japan

来源：

JOURNAL OF VETERINARY MEDICAL SCIENCE | 2012年 / 74卷 / 12期

基金：

新加坡国家研究基金会;

关键词：

craniodental morphology; Nyctereutes procyonoides koreensis; raccoon dog; sexual dimorphism; SKULL; SIZE; MODULARITY;

D O I：

10.1292/jvms.12-0281

中图分类号：

S85 [动物医学（兽医学）];

学科分类号：

0906 ;

摘要：

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.

引用

页码：1609 / 1616

页数：8

共 23 条

[1]

[Anonymous], 2011, R: A Language and Environment for Statistical Computing

[2] Racoon dog, Nyctereutes procyonoides, populations in the area of origin and in colonised regions - the epigenetic variability of an immigrant [J].