Spawning of eels near a seamount (original) (raw)

Oceanic biology

Nature volume 439, page 929 (2006) Cite this article

Tiny transparent larvae of the Japanese eel collected in the open ocean reveal a strategic spawning site.

Abstract

Discoveries of the larvae of the European and American eels, Anguilla anguilla and A. rostrata, in the Sargasso Sea1,2 and of the Japanese eel, A. japonica, in the Philippine Sea3 indicate that these freshwater eels migrate thousands of kilometres into the open ocean to spawn. Here we pinpoint a spawning location for Japanese eels after genetically identifying newly hatched larvae that we collected from the site. The restricted size of this spawning area ensures that the eel larvae enter a particular current that transports them to the freshwater areas in east Asia where they mature, and it also prevents them from being carried southwards away from their species range by a different local current.

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Figure 1: Collection sites of small eel larvae.

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Figure 2: Japanese eel pre-leptocephali at different stages of development.

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Authors and Affiliations

  1. Ocean Research Institute, University of Tokyo, Nakano, Tokyo, 164-8639, Japan
    Katsumi Tsukamoto

Corresponding author

Correspondence toKatsumi Tsukamoto.

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The author declares no competing financial interests.

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Tsukamoto, K. Spawning of eels near a seamount.Nature 439, 929 (2006). https://doi.org/10.1038/439929a

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