Water movements around the spawning sites of Halichoeres marginatus (Pisces: Labridae)

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  • カノコベラの産卵場所の水流環境
  • カノコベラ ノ サンラン バショ ノ スイリュウ カンキョウ

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Abstract

The locations of pelagic spawning sites of inshore reef fish have been believed to favor the quick removal of eggs offshore. However, few studies have measured water movements around such spawing sites. Water movements around the spawning sites of Halichoeres marginatus in Nishiura Bay, Kuchierabu-jima Island, southern Japan, were studied using dye releases. These showed the dye to be almost entirely transported offshore from the sites within several hours. The spawning sites of H. marginatus apparently favor the rapid removal of eggs offshore, as hypothesized.

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