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北海道大学水産科学研究彙報 = Bulletin of Fisheries Sciences, Hokkaido University >
第66巻 第1号 >

北海道大沼国定公園内の湖沼群におけるヨシ由来の細菌によるアオコ発生制御の可能性

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Please use this identifier to cite or link to this item:http://doi.org/10.14943/bull.fish.66.1.19

Title: 北海道大沼国定公園内の湖沼群におけるヨシ由来の細菌によるアオコ発生制御の可能性
Other Titles: Possible control strategy of cyanobacterial blooms by bacteria from reed(Phragmites australis) communities in lakes of Ohnuma Quasi-National park, Hokkaido
Authors: 小島, 千里1 Browse this author
宮下, 洋平2 Browse this author
萩原, 匠3 Browse this author
山口, 篤4 Browse this author →KAKEN DB
今井, 一郎5 Browse this author →KAKEN DB
Authors(alt): Kojima, Senri1
Miyashita, Yohei2
Hagiwara, Takumi3
Yamaguchi, Atsushi4
Imai, Ichiro5
Keywords: Cyanobacterial blooms
Microcystis aeruginosa
algicidal bacteria
growth-inhibiting bacteria
Pharagmites australis
Ohnuma Quasi-National Park
prevention
mitigation
Issue Date: 18-Mar-2016
Publisher: 北海道大学大学院水産科学研究院
Journal Title: 北海道大学水産科学研究彙報
Volume: 66
Issue: 1
Start Page: 19
End Page: 28
Abstract: Toxic blooms of cyanobacteria have negative impacts on fresh water ecosystems, and there is an urgent need to develop strategies to control those blooms. Algicidal bacteria that kill noxious species of cyanobacteria are expected as tools for mitigating impacts of the toxic cyanobacterial blooms. This study carried out to search algicidal bacteria against toxic cyanobacteria from biofilm on reeds and water samples in reed communities in Ohnuma Quasi-National Park and evaluated for control ability of cyanobacterial bloom by bacteria from reeds. Bacteria were isolated from the biofilm on reed and water samples, and the algicidal ability was examined using Microcystis aeruginosa by co-culture experiments. Algicidal bacteria were detected in high densities(order of 10⁵-10⁶ CFU g⁻¹ wet reed weight) from the biofilm of reeds including artificially planted reeds. Water samples from reed communities also contained more algicidal bacteria than those samples from no reed communities. The results suggested a possibility that reeds supply algicidal bacteria to adjacent water and reed communities have high potential ability to control toxic cyanobacterial blooms via bacteria possessing algicidal and groth-inhibiting activities.
Type: bulletin (article)
URI: http://hdl.handle.net/2115/61051
Appears in Collections:北海道大学水産科学研究彙報 = Bulletin of Fisheries Sciences, Hokkaido University > 第66巻 第1号

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