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Genetic differentiation between two types of dark chub,Zacco temmincki,in Japan |
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| Authors: | Toshio Okazaki Masakazu Watanabe Kenya Mizuguchi Kazumi Hosoya |
| Institution: | 1. National Research Institute of Aquaculture, Hiruta, Tamaki-cho, 519-04, Mie, Japan 2. Keika Senior High School, 5-6-6 Hakusan, Bunkyo-ku, 112, Tokyo, Japan 3. Tokyo University of Fisheries, 4-5-7 Konan, Minato-ku, 108, Tokyo, Japan 4. National Research Institute of Aquaculture, Nakatsuhamaura, Nansei-cho, 516-01, Mie, Japan |
| Abstract: | Two types of the dark chub,Zacco temmincki, collected from 10 river systems in Japan were genetically characterized at 27 protein coding loci using starch-gel electrophoresis. They were fixed for different alleles at 13 loci. No hybrid individuals were observed, even in specimens collected in stations where both types appear sympatrically, indicating that each type of the dark chub represents a distinct species. |
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