Inhibitory effects of centric diatoms on the growth of the dinoflagellate Akashiwo sanguinea

Tadashi Matsubara, Sou Nagasoe, Yasuhiro Yamasaki, Tomoyuki Shikata, Yohei Shimasaki, Yuji Oshima, Tsuneo Honjo

研究成果: Contribution to journalArticle

6 被引用数 (Scopus)

抄録

Results of a four-year study on phytoplankton in Hakozaki Harbor, Hakata Bay, Japan indicated that Akashiwo sanguinea (Hirasaka) Hansen et Moestrup was the cause of frequent blooms during the late fall period when centric diatoms such as Skeletonema costatum and genus Chaetoceros declined. In laboratory experiments, the growth of A. sanguinea was found to be strongly inhibited in bi-algal cultures with S. costatum and Chaetoceros didymum, but just slightly with Asterionella japonica. Furthermore, when A. sanguinea was cultured in nitrogen and phosphorus enriched filtrates with media on which S. costatum and C. didymum had grown densely, the growth rate of A. sanguinea in the filtrates was significantly lower than that in fresh control medium. These results suggest that in spring and summer allelopathy of bloomed centric diatoms was an important factor that inhibited the growth of A. sanguinea but in the late fall when the cell density of these diatoms declined, A. sanguinea could form blooms.

本文言語英語
ページ(範囲)598-606
ページ数9
ジャーナルNippon Suisan Gakkaishi (Japanese Edition)
74
4
DOI
出版ステータス出版済み - 7 1 2008

All Science Journal Classification (ASJC) codes

  • Aquatic Science

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