| Morphological Comparison between Chinese Ayu and Japanese Ayu and Establishment of Plecoglossus altivelis chinensis Wu&Shan subsp.nov. |
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| 作者姓名： | SHAN Xiujuan WU Yunfei and KANG Bin Fishery College Division of Life Science and Technology Ocean University of China Qingdao P. R. China |
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| 作者单位： | SHAN Xiujuan，WU Yunfei，and KANG Bin Fishery College，Division of Life Science and Technology，Ocean University of China，Qingdao 266003，P. R. China |
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| 摘 要： | Ayu(Plecoglossus altivelis)belongs to Osmeri-formes,Qsmeridae,Plecoglossus.It is small-sized,one-year living species with high economic value.It can befound in China,Japan,the Peninsula of Korea,andthe north of Vietnam.Nishida(1988)classifiedJapanese native Ayu into two subspecies:nominatesubspecies(Plecoglossus altivelis altivelis)mainlydistributed in the mainland of Japan,the peninsula ofKorea,Taiwan and China mainland;Ryukyus sub-species(Plecoglossus altivelis ryukyuensis)only dis-tr…
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Morphological Comparison between Chinese Ayu and Japanese Ayu and Establishment of Plecoglossus altivelis chinensis Wu & Shan subsp. nov. |
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| SHAN Xiujuan,WU Yunfei,and KANG Bin Fishery College,Division of Life Science and Technology,Ocean University of China,Qingdao ,P. R. China.Morphological Comparison between Chinese Ayu and Japanese Ayu and Establishment of Plecoglossus altivelis chinensis Wu&Shan subsp.nov.[J].Journal of Ocean University of China,2005(1). |
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| Authors: | SHAN Xiujuan WU Yunfei and KANG Bin Fishery College Division of Life Science and Technology Ocean University of China Qingdao P R China |
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| Institution: | SHAN Xiujuan,WU Yunfei,and KANG Bin Fishery College,Division of Life Science and Technology,Ocean University of China,Qingdao 266003,P. R. China |
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| Abstract: | The countable characters of Qingdao, Zhejiang, Liaoning and Japanese Ayu are compared. There are no substan- tial different characters among the former three Ayu, so the comprehensive values of them are taken as representative of Chinese Ayu, which is in turn compared with Japanese Ayu ( Plecoglossus altivelis altivelis and Plecoglossus altivelis ryukyuensis). By the coefficient of difference test, 3 and 4 characters are found to be beyond the subspecies level between Chinese Ayu and nominate subspecies (Plecoglossus altivelis altivelis) and between Chinese Ayu (Plecoglossus altivelis chinensis) and Ryukyus subspecies (Plecoglossus altivelis ryukyuensis), respectively, which shows that they belong to different subspecies. The China mainland Ayu is a new subspecies, Plecoglossus altivelis chinensis Wu & Shan, the establishment of which and its forming causes are discussed. |
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| Keywords: | morphological comparison Plecoglossus altivelis chinensis Wu&Shan geographic isolation population sub- species differentiation |
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