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http://140.128.103.80:8080/handle/310901/21010
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Title: | Geographical variation of mandible size and shape in the wild pig (Sus scrofa) from Taiwan and Japan |
Authors: | Endo, H., Hayashi, Y., Yamazaki, K., Motokawa, M., Pei, J.-C.K., Lin, L.-K., Chou, C.-H., Oshida, T. |
Contributors: | Laboratory of Wildlife Ecology, Department of Life Science, Tunghai University |
Keywords: | Mandible;Osteometry;Taiwan;Wild pig |
Date: | 2002 |
Issue Date: | 2013-04-24T07:15:30Z (UTC)
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Abstract: | We examined osteometrical characters in the mandibles of the wild pigs (Sus scrofa) from Taiwan, and compared them with those from the Japanese mainland and Iriomote Island (Okinawa Prefecture). Mandibles from Iriomote Island were smaller in size than those from the other localities. Specimens from the Taiwanese population significantly differed from the Mie or Tanba (Honshu) samples in some important measurements such as length of the mandible, although the Mie samples were similar to the Taiwanese ones in many measurements especially in males, while the principal component charts showed that the Taiwanese population is separated from the Oita and Miyazaki (Kyushu) populations for older age classes. Therefore, we concluded that the morphology of the wild pig from Taiwan relatively resembles that of the Japanese wild pig from the Honshu area (Mie and Hyogo (Tanba) Prefectures). The osteological characters in the mandibles of the Taiwanese population have been affected and determined by the following 3 geographical and climatic factors in the habitat: 1) being from 22? to 25? north latitude, 2) being from about 2000 m in elevation, and 3) having experienced the isolation effect on an island of 36 000 km2. We suggest that these factors make the mandibles from Taiwan similar to those from the Japanese mainland such as those from Mie. |
Relation: | Zoological Studies 41 (4) , pp. 452-460 |
Appears in Collections: | [生命科學系所] 期刊論文
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