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Takahito Kojima
Department of Fisheries, College of Agriculture and Veterinary Medicine, Nihon University
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Shoji Kitamura
National Research Institute of Aquaculture, Nikko Branch
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Kazumasa Ikuta
National Research Institute of Aquaculture, Nikko Branch
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Yutaka Sugiyama
Department of Fisheries, College of Agriculture and Veterinary Medicine, Nihon University
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Kazumasa Yoza
Department of Fisheries, College of Agriculture and Veterinary Medicine, Nihon University
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Hideo Soeda
Department of Fisheries, College of Agriculture and Veterinary Medicine, Nihon University