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タイトル: Evidence for migration of metamorphosing larvae of Anguilla japonica in the Kuroshio
著者: Otake, Tsuguo
Miller, Michael J.
Inagaki, Tadashi
Minagawa, Gen
Shinoda, Akira
Kimura, Yoburo
Sasai, Seiji
Oya, Machiko
Tasumi, Satoshi
Suzuki, Yuzuru
Uchida, Makoto
Tsukamoto, Katsumi
キーワード: Anguilla japonica
leptocephalus
glass eel
Kuroshio
metamorphosis
larval migration
発行日: 2006年6月25日
出版者: International Coastal Research Center, Ocean Research Institute, the University of Tokyo
掲載誌情報: Coastal marine science. Vol.30No.2, 2006.6, pp. 453-458
抄録: Two sampling surveys of the R/V Tansei Maru were conducted in the Kuroshio region south of Kyushu Island of Japan and to the south in the western North Pacific, to study the distribution patterns of the larval stages of the Japanese eel Anguilla japonica as they approach their recruitment areas in East Asia. Nine fully-grown premetamorphic leptocephali (49.5-58.3mm TL) were collected during November 1996 to the east of Taiwan. During November and December 2000, nine early stage glass eels (51.3-57.0mm TL, pigmentation stage II-IV) that were still in the late metamorphosis stages were collected in the Kuroshio. These findings suggest that metamorphosing Japanese eel leptocephali that recruit to the northern part of their species range migrate in the Kuroshio. They may detrain from the Kuroshio at the pigmentation stage IV-VA and begin their coastal migration.
URI: http://hdl.handle.net/2261/5669
ISSN: 13493000
出現カテゴリ:Coastal Marine Science
Coastal Marine Science

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