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Behavioral migration diversity of the Yangtze River Japanese Eel, Anguilla japonica, based on otolith Sr/Ca ratios

GUO Hong-Yi ZHENG Yi TANG Wen-Qiao SHEN Hao WEI Kai XIE Zheng-Li Katsumi Ts

GUO Hong-Yi, ZHENG Yi, TANG Wen-Qiao, SHEN Hao, WEI Kai, XIE Zheng-Li, Katsumi Ts. Behavioral migration diversity of the Yangtze River Japanese Eel, Anguilla japonica, based on otolith Sr/Ca ratios. Zoological Research, 2011, 32(4): 442-450. doi: 10.3724/SP.J.1141.2011.04442
Citation: GUO Hong-Yi, ZHENG Yi, TANG Wen-Qiao, SHEN Hao, WEI Kai, XIE Zheng-Li, Katsumi Ts. Behavioral migration diversity of the Yangtze River Japanese Eel, Anguilla japonica, based on otolith Sr/Ca ratios. Zoological Research, 2011, 32(4): 442-450. doi: 10.3724/SP.J.1141.2011.04442

据于矢耳石Sr/Ca值的长江日本鳗鲡迁移格局多样性分析(英语)

doi: 10.3724/SP.J.1141.2011.04442
详细信息
    作者简介:

    郭弘艺

    通讯作者:

    唐文乔

Behavioral migration diversity of the Yangtze River Japanese Eel, Anguilla japonica, based on otolith Sr/Ca ratios

Funds: This work was supported by the Chinese National Science Foundation under the Grant (30771650); the Key Programs of Science and Technology Commission Foundation of Shanghai (08391910200); Special Fund for Agroscientific Research in the Public Interest (201203065);Research Fund for the Doctoral Program of Higher Education of China (20070264001); E-class Programs of Shanghai Municipal Education Commission (E03009); the Key Subject Construction of Shanghai (S30701).
More Information
    Author Bio:

    GUO Hong-Yi

    Corresponding author: TANG Wen-Qiao1
  • 摘要: 长江口是中国日本鳗鳗苗的主要产区和仅存的成鳗渔业水域。日本鳗自长江河口至上游金沙江近3000 km干流及许多支流中都有分布, 但其迁移行为却不为人了解。该文分析了2008年9~11月采自长江靖江段(31º30′N, 120º42′E)的153尾银色鳗样本的生物学特征, 测定了其中27尾标本的矢耳石Sr/Ca值。结果显示, 153尾样本中有雌性85尾、雄性68尾, 雌雄性比1∶0.8。雌性由3~7(平均5.52)龄组成, 平均体长(669±80) mm, 体重(555±229) g, 丰满度1.77±0.22,性腺指数(GSI)1.32±0.31。雄性由3~5(平均4.38)龄组成, 平均体长(518±51) mm, 体重(234±76) g, 丰满度1.62±0.18, GSI 0.21±0.11。雌性的这些生物学参数均显著大于雄性(P<0.05)。依据矢耳石线鳗标志轮平均Sr/Ca值(7.99±1.05)×10-3进行判断, 有17尾(即62.96%个体)为“淡水型”, 10尾(即37.04%个体)为“河口型”。16尾雌性中有13尾(即81.25%)为“淡水型”, 3尾为“河口型”。11尾雄性中仅36.36%为“淡水型”, 63.64%为“河口型”。对每个生长层组的Sr/Ca值分析表明, 雌雄间2龄时无显著差异, 但3龄、4龄和洄游龄组都有显著或极显著的差异, 预示着2龄时两者的栖息水域比较一致, 但后来出现了明显栖息地分化。
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出版历程
  • 收稿日期:  2010-12-31
  • 修回日期:  2011-06-27
  • 刊出日期:  2011-08-22

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