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The role of interactions between Prorocentrum minimum and Heterosigma akashiwo in bloom formation

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タイトル: The role of interactions between Prorocentrum minimum and Heterosigma akashiwo in bloom formation
著者: Yamasaki, Y. / Nagasoe, S. / Tameishi, M. / Shikata, T. / Zou, Y. / Jiang, Z. / Matsubara, T. / Shimasaki, Y. / Yamaguchi, K. / Oshima, Y. / Oda, T. / Honjo, T.
発行日: 2010年 2月
出版者: Springer Netherlands
引用: Hydrobiologia, 641(1), pp.33-44; 2010
抄録: We examined the growth and interactions between the bloom-forming flagellates Prorocentrum minimum and Heterosigma akashiwo using bi-algal culture experiments. When both species were inoculated at high cell densities, growth of H. akashiwo was inhibited by P. minimum. In other combinations of inoculation densities, the species first reaching the stationary phase substantially suppressed maximum cell densities of the other species, but the growth inhibition effect of P. minimum was stronger than that of H. akashiwo. We used a mathematical model to simulate growth and interactions of P. minimum and H. akashiwo in bi-algal cultures. The model indicated that P. minimum always out-competed H. akashiwo over time. Additional experiments showed that crude extracts from P. minimum and H. akashiwo cultures did not affect the growth of either species, but both strongly inhibited the growth of the bloom-forming diatom Skeletonema costatum. Further experiments showed that it was unlikely that reactive oxygen species produced by H. akashiwo were responsible for the inhibition of P. minimum growth.
キーワード: Allelopathy / Growth and interaction / Heterosigma akashiwo / Prorocentrum minimum / Reactive oxygen species / Skeletonema costatum
URI: http://hdl.handle.net/10069/22763
ISSN: 00188158
DOI: 10.1007/s10750-009-0052-y
権利: © Springer Science+Business Media B.V. 2010 / The original publication is available at www.springerlink.com
資料タイプ: Journal Article
原稿種類: author
出現コレクション:080 学術雑誌論文

引用URI : http://hdl.handle.net/10069/22763



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