Characterization of changes in predation pressure and occurrences predator by artificial disassembling of Microcystis cell colony

• Project/Area Number: 24560669
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Civil and environmental engineering
• Research Institution: Meisei University
• Principal Investigator: IWAMI, norio 明星大学, 理工学部, 准教授 (00353532)
• Co-Investigator(Kenkyū-buntansha): ITAYAMA tomoaki 長崎大学, 大学院工学研究科, 教授 (80353530) ; SHIMIZU kazuya 東洋大学, 生命科学部, 准教授 (10581613)
• Research Collaborator: SHIOYA kazune 明星大学, 大学院理工学研究科, 研究生
• Project Period (FY): 2012-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000); Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2013: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2012: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
• Keywords: Microcystis / 細胞群体解体 / 捕食微小動物 / 個体群動態 / 捕食圧 / 隔離水界 / 分子生態学

Outline of Final Research Achievements

In this study, we examined an appearing micro-fauna and an impact to predation pressure by artificial disassembling of Microcystis cell colony. Furthermore, we considered a process of reducing Microcystis in predation pressure of the identified micro-fauna. As a result, protozoan flagellate Monas sp. as a predator of singly disperse cells of Microcystis was estimated by enrichment culture system. In addition, it was confirmed by the combined culture system that the predation pressure of isolated Monas sp. is increased by artificially disassembling colony formed Microcystis to single cells. It was suggested that suppression of Microcystis on small pond was achieved by results of the model experiment which the small scale pond combined with the predation effect of Monas sp. and the system of artificially disassembling Micorcystis cell colony.

Research Products

• [Journal Article] 富栄養化池沼におけるシアノバクテリア抑制への取組み -シアノバクテリア抑制の生態工学研究- (2013)
  • Author(s): 岩見徳雄, 板山朋聡
  • Journal Title: 土木技術 Volume: 第68巻, 第10号 Pages: 53-57
• [Presentation] タイ王国の環境保全再生対策戦略 (2015)
  • Author(s): 岩見徳雄，間世田英明，清水和哉，板山朋聡
  • Organizer: 日本水環境学会シンポジウム
  • Place of Presentation: 長野
  • Year and Date: 2015-09-14
• [Presentation] 井の頭池のかいぼりによるアオコ抑制効果の検証 (2015)
  • Author(s): 浅利一旭, 青山宗司, 清水和哉, 板山朋聡, 茂木希和子, 岩見徳雄
  • Organizer: 日本水環境学会
  • Place of Presentation: 金沢
  • Year and Date: 2015-03-16 – 2015-03-18
• [Presentation] 井の頭公園池の水環境再生に向けて-かいぼりを試行してみて- (2014)
  • Author(s): 岩見徳雄，藤村和正，浅利一旭
  • Organizer: RECCA高知・流域圏学会
  • Place of Presentation: 高知
  • Year and Date: 2014-11-24
• [Presentation] 硝酸態窒素制限下におけるMicrocystisの消長 (2014)
  • Author(s): 青山宗司, 浅利一旭, 茂木希和子, 岩見徳雄
  • Organizer: 日本水処理生物学会
  • Place of Presentation: 甲府
  • Year and Date: 2014-11-12 – 2014-11-14
• [Presentation] 木炭担体を用いたバイオフェンスの有毒藍藻除去機構の解析 (2014)
  • Author(s): Chunyan Liu, Dong Xia, Yang Gu, Pengfei Wang, 岩見徳雄, 清水和哉, 板山朋聡
  • Organizer: 日本水環境学会
  • Place of Presentation: 仙台
• [Presentation] Microcystisの細胞群体解体による捕食微小動物のスクリーニング (2013)
  • Author(s): 岩見徳雄, 藤井茉莉花, 塩谷和音, 清水和哉, 杉浦則夫, 板山朋聡
  • Organizer: 日本水環境学会
  • Place of Presentation: 大阪
• [Presentation] バイオフェンスを用いた水域部分浄化手法の解析 (2013)
  • Author(s): 板山朋聡, 岩見徳雄, 清水和哉, Niwooti Whangchai, 杉浦則夫
  • Organizer: 日本水環境学会
  • Place of Presentation: 大阪
• [Presentation] 木炭等を用いたバイオリアクターによる富栄養化水域の浄化処理 (2013)
  • Author(s): Xueying Bi, Norio Iwami, Kazuya Shimizu, Dong Xia, Chayaporn Teercharernwong, Redel Gutierrez, Kohmsan Ruangdet, Niwooti Whangchai, Norio Sugiura, Tomoaki Itayama
  • Organizer: 日本水環境学会
  • Place of Presentation: 大阪
• [Presentation] Characteristics of Water Quality and Occurrence Microalgae in Central Tokyo Peripheral Ponds
  • Author(s): Kazune Shioya, Tomoaki Itayama, Kazuya Shimizu, Niwooti Whangchai, Norio Iwami
  • Organizer: Meeting on the title with Water Environment of "Glocalization" Era, in Nagasaki Univ.
  • Place of Presentation: Nagasaki