The Possibility of Reactive Oxygen Species (ROS)-Independent Toxic Effects of Cochlodinium polykrikoides on Damselfish (Chromis caerulea)

Daekyung KIM; Yasuhiro YAMASAKI; Toshifumi YAMATOGI; Kenichi YAMAGUCHI; Yukihiko MATSUYAMA; Yang-Soon KANG; Yoon LEE; Tatsuya ODA

doi:10.1271/bbb.80693

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The Possibility of Reactive Oxygen Species (ROS)-Independent Toxic Effects of Cochlodinium polykrikoides on Damselfish (Chromis caerulea)

Daekyung KIM, Yasuhiro YAMASAKI, Toshifumi YAMATOGI, Kenichi YAMAGUCHI, Yukihiko MATSUYAMA, Yang-Soon KANG, Yoon LEE, Tatsuya ODA

著者情報

キーワード: harmful algal blooms, Cochlodinium polykrikoides, ichthyotoxicity, damselfish, reactive oxygen species

ジャーナルフリー早期公開

論文ID: 80693

DOI https://doi.org/10.1271/bbb.80693

この記事には本公開記事があります。

The final version of this article is now available: Vol. 73 (2009) , No. 3 p.613

詳細

抄録

To elucidate the ichthyotoxic mechanism of the harmful dinoflagellate Cochlodinium polykrikoides, a bioassay using damselfish was conducted. After exposure to a live-cell suspension of C. polykrikoides, all the fish were died within 90 min. In the presence of catalase and superoxide dismutase (SOD), no significant reduction in the toxicity of C. polykrikoides on the fish was observed. Furthermore, no significant levels of reactive oxygen species (ROS) were detected in five strains of C. polykrikoides isolated in Japan. Our results support the idea that certain toxic substances, rather than ROS, are mainly responsible for the fish-killing activity of C. polykrikoides.

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