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Activities of Algicidal Bacteria and Their Influences on Microbial Communities

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Title: Activities of Algicidal Bacteria and Their Influences on Microbial Communities
Authors: Shibata, Kenichi Browse this author
Amemiya, Takashi Browse this author
Itoh, Kiminori Browse this author
Issue Date: Sep-2008
Publisher: [Department of Mathematics, Hokkaido University]
Citation: JST Presto Symposium on Mathematical Sciences towards Environmental Problems (Hokkaido University technical report series in mathematics ; 136). pp.71-73.
Abstract: It is said that algicidal bacteria can be used as biological control agents for algal blooms. We examined influences of algicidal bacteria on microbial communities in a laboratory experiment as a first step of ecological risk assessment. A microcosm, which consists of wild protozoa, bacterioplankton, and cultured Microcystis aeruginosa NIES 99, was constructed as a model microbial ecosystem of eutrophic lakes with algal blooms. Lysobacter enzymogenes subsp. enzymogenes AL-1 (DSM 1895) was added to the microcosm as an algicidal bacterium. Ciliates, flagellates, fungi, and M. aeruginosa NIES 99 were observed in control runs. In the runs with L. enzymogenes AL-1, although M. aeruginosa NIES 99 was not lysed, the other microbes disappeared. We address that applications of algicidal bacteria to actual lakes are considered to be ecologically risky contrary to the previous ideas.
Description: JSTさきがけ研究集会 環境問題における数理の可能性. 平成20年6月11日~平成20年6月13日. 札幌市
Conference Name: JSTさきがけ研究集会 環境問題における数理の可能性
Conference Place: 札幌
Type: proceedings
URI: http://hdl.handle.net/2115/34747
Appears in Collections:北海道大学サステナビリティ・ウィーク2008 (Sustainability Weeks 2008) > JSTさきがけ研究集会 環境問題における数理の可能性

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