Location, size and age at onset of metamorphosis in the Japanese eel Anguilla japonica

N. Fukuda, H. Kurogi, D. Ambe, S. Chow, T. Yamamoto, K. Yokouchi, A. Shinoda, Y. Masuda, M. Sekino, K. Saitoh, M. Masujima, T. Watanabe, Noritaka Mochioka, H. Kuwada

研究成果: ジャーナルへの寄稿記事

4 引用 (Scopus)

抄録

This study clarifies the location, size and age at the onset of metamorphosis in Japanese eels Anguilla japonica through oceanic surveys, rearing experiments and analyses of the morphology and otoliths of leptocephali and glass eels. Twenty-eight metamorphosing leptocephali were collected in the mesoscale eddy region to the east of Taiwan during research expeditions in 2004. Rearing experiments showed that the total length (LT) of leptocephali decreased by an average of 12·5% during metamorphosis and 13·9% during the 2–12 h after death. Thus, the mean back-calculated LT at the onset of metamorphosis for 630 glass eels from Taiwan and Japan was estimated at 67·8 ± 2·7 mm (mean ± S.D.). The estimated mean ante-mortem size of the fully grown pre-metamorphic leptocephali collected in 2004 was 64·6 ± 3·4 mm, which was consistent with the LT estimate for glass eels. Otolith analysis showed that the mean age at the onset of metamorphosis was 137 ± 15 days and indicated that Japanese eels may have a recruitment route through the mesoscale eddies to the east of Taiwan in addition to the direct transfer route from the North Equatorial Current to the Kuroshio Current.

元の言語英語
ページ(範囲)1342-1358
ページ数17
ジャーナルJournal of Fish Biology
92
発行部数5
DOI
出版物ステータス出版済み - 5 1 2018

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Anguilla japonica
eel
metamorphosis
Taiwan
glass
otoliths
mesoscale eddy
otolith
rearing
Japan
death
experiment

All Science Journal Classification (ASJC) codes

  • Ecology, Evolution, Behavior and Systematics
  • Aquatic Science

これを引用

Fukuda, N., Kurogi, H., Ambe, D., Chow, S., Yamamoto, T., Yokouchi, K., ... Kuwada, H. (2018). Location, size and age at onset of metamorphosis in the Japanese eel Anguilla japonica. Journal of Fish Biology, 92(5), 1342-1358. https://doi.org/10.1111/jfb.13590

Location, size and age at onset of metamorphosis in the Japanese eel Anguilla japonica. / Fukuda, N.; Kurogi, H.; Ambe, D.; Chow, S.; Yamamoto, T.; Yokouchi, K.; Shinoda, A.; Masuda, Y.; Sekino, M.; Saitoh, K.; Masujima, M.; Watanabe, T.; Mochioka, Noritaka; Kuwada, H.

:: Journal of Fish Biology, 巻 92, 番号 5, 01.05.2018, p. 1342-1358.

研究成果: ジャーナルへの寄稿記事

Fukuda, N, Kurogi, H, Ambe, D, Chow, S, Yamamoto, T, Yokouchi, K, Shinoda, A, Masuda, Y, Sekino, M, Saitoh, K, Masujima, M, Watanabe, T, Mochioka, N & Kuwada, H 2018, 'Location, size and age at onset of metamorphosis in the Japanese eel Anguilla japonica', Journal of Fish Biology, 巻. 92, 番号 5, pp. 1342-1358. https://doi.org/10.1111/jfb.13590
Fukuda N, Kurogi H, Ambe D, Chow S, Yamamoto T, Yokouchi K その他. Location, size and age at onset of metamorphosis in the Japanese eel Anguilla japonica. Journal of Fish Biology. 2018 5 1;92(5):1342-1358. https://doi.org/10.1111/jfb.13590
Fukuda, N. ; Kurogi, H. ; Ambe, D. ; Chow, S. ; Yamamoto, T. ; Yokouchi, K. ; Shinoda, A. ; Masuda, Y. ; Sekino, M. ; Saitoh, K. ; Masujima, M. ; Watanabe, T. ; Mochioka, Noritaka ; Kuwada, H. / Location, size and age at onset of metamorphosis in the Japanese eel Anguilla japonica. :: Journal of Fish Biology. 2018 ; 巻 92, 番号 5. pp. 1342-1358.
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abstract = "This study clarifies the location, size and age at the onset of metamorphosis in Japanese eels Anguilla japonica through oceanic surveys, rearing experiments and analyses of the morphology and otoliths of leptocephali and glass eels. Twenty-eight metamorphosing leptocephali were collected in the mesoscale eddy region to the east of Taiwan during research expeditions in 2004. Rearing experiments showed that the total length (LT) of leptocephali decreased by an average of 12·5{\%} during metamorphosis and 13·9{\%} during the 2–12 h after death. Thus, the mean back-calculated LT at the onset of metamorphosis for 630 glass eels from Taiwan and Japan was estimated at 67·8 ± 2·7 mm (mean ± S.D.). The estimated mean ante-mortem size of the fully grown pre-metamorphic leptocephali collected in 2004 was 64·6 ± 3·4 mm, which was consistent with the LT estimate for glass eels. Otolith analysis showed that the mean age at the onset of metamorphosis was 137 ± 15 days and indicated that Japanese eels may have a recruitment route through the mesoscale eddies to the east of Taiwan in addition to the direct transfer route from the North Equatorial Current to the Kuroshio Current.",
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AU - Chow, S.

AU - Yamamoto, T.

AU - Yokouchi, K.

AU - Shinoda, A.

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AU - Masujima, M.

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AU - Mochioka, Noritaka

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