Seamounts, New Moon and eel Spawning: The Search for the Spawning Site of the Japanese eel
Seamounts, New Moon and eel Spawning: The Search for the Spawning Site of the Japanese eel
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DOI：
10.1023/a:1023926705906
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发表时间：
2003-03
影响因子：
1.4
通讯作者：
K. Tsukamoto;T. Otake;N. Mochioka;T. Lee;H. Fricke;T. Inagaki;J. Aoyama;S. Ishikawa;S. Kimura;Michael J. Miller;Hiroshi Hasumoto;M. Oya;Yuzuru Suzuki
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作者：
K. Tsukamoto;T. Otake;N. Mochioka;T. Lee;H. Fricke;T. Inagaki;J. Aoyama;S. Ishikawa;S. Kimura;Michael J. Miller;Hiroshi Hasumoto;M. Oya;Yuzuru Suzuki
通过对北太平洋西部日本鳗鲡（Anguillajaponica）幼鳗的采集资料进行分析，发现该鱼种的产卵场位于西马里亚纳海脊的3座海山附近，距离其淡水栖息地约2000-3000 km。这些海山位于北赤道海流向西流动的地方，据推测是迁移银鳗的线索，也是产卵的可能聚集地。根据耳石显微结构反算的出生日期表明，日本鳗鲡在4月至11月的漫长产卵季节期间并不连续产卵，而是在新月期间每月定期产卵一次。从亚里士多德时代起，鳗鱼产卵的神秘就一直吸引着博物学家，而月周期性产卵和海山产卵假说则是鳗鱼产卵这一千年之谜的新进展。
After analyzing all the collection data for larvae of the Japanese eel,Anguilla japonica, in the western North Pacific, we found that the spawning site of this species appears to be near three seamounts in the West Mariana Ridge, 2000–3000 km away from their freshwater habitats. These seamounts are located in the westward flow of the North Equatorial Current and are hypothesized to provide cues for migrating silver eels and to serve as possible aggregation sites for spawning. Back-calculated birth dates based on otolith microstructure of leptocephali indicate that the Japanese eel does not spawn continuously during the long spawning season from April to November, but is synchronized to spawn periodically once a month during new moon. This lunar periodicity of spawning and the seamount spawning hypothesis are new developments in the millennium-old mystery of eel spawning that has fascinated naturalists since the time of Aristotle.