The effects of seasonal and interannual variability of oceanic structure in the western Pacific North Equatorial Current on larval transport of the Japanese eel Anguilla japonica.
The effects of seasonal and interannual variability of oceanic structure in the western Pacific North Equatorial Current on larval transport of the Japanese eel Anguilla japonica.
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DOI：
10.1111/j.1095-8649.2009.02295.x
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发表时间：
2009-06
影响因子：
2
通讯作者：
K. Zenimoto;T. Kitagawa;S. Miyazaki;Y. Sasai;H. Sasaki;S. Kimura
中科院分区：
文献类型：
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作者：
K. Zenimoto;T. Kitagawa;S. Miyazaki;Y. Sasai;H. Sasaki;S. Kimura
由于北赤道流（NEC）分叉与厄尔尼诺-南方涛动（ENSO）事件有关，因此研究了NEC分叉位置对日本鳗鲡（Anguilla japonica）幼鳗运输成功的影响。使用拉格朗日建模方法，模拟了幼虫输送，并分析了厄尔尼诺和拉尼娜事件以及NEC分叉位置对颗粒输送成功的相对影响。从NEC输送到黑潮的粒子数量在厄尔尼诺年期间往往是最低的，拉尼娜年和正常年之间的差异很小。在模拟中观察到的输送成功显示了与年度A的一些关系。1993年至2001年，种岛的日本玻璃鳗补充量增加，但2002年没有。研究表明，粒子跟踪模拟可以用来提高对海洋迁移的A。但需要进一步研究，包括比较温度波动和食物供应对幼虫存活的影响。
As the North Equatorial Current (NEC)-bifurcation is known to be related to El Niño-Southern Oscillation (ENSO) events, the influence of the position of the NEC bifurcation on transport success of the larval Japanese eel Anguilla japonica was investigated. Using a Lagrangian modelling approach, larval transport was simulated and the relative influence of El Niño and La Niña events and the NEC-bifurcation position on the success of particle transport analysed. The number of particles transported from the NEC to the Kuroshio tended to be lowest during El Niño years, and differences between La Niña and regular years were small. The transport success observed in simulations showed some relationships to annual A. japonica glass eel recruitment to Tanegashima Island over 1993 to 2001, but not in 2002. The study shows that particle tracking simulations can be used to improve knowledge of the oceanic migration of A. japonica but further studies are required, including comparisons with the effects on larval survival of fluctuations in temperature and food availability.