| Project/Area Number |
26550090
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Environmental and ecological symbiosis
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| Research Institution | Center for Environmental Science in Saitama |
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Principal Investigator |
Tanaka Hitoshi 埼玉県環境科学国際センター, 水環境担当, 担当部長 (40415378)
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| Co-Investigator(Kenkyū-buntansha) |
矢吹 芳教 地方独立行政法人大阪府立環境農林水産総合研究所(環境研究部、食の安全研究部及び水, その他部局等, 主任研究員 (00360818)
相子 伸之 地方独立行政法人大阪府立環境農林水産総合研究所(環境研究部、食の安全研究部及び水, その他部局等, 主任研究員 (30443526)
大塚 宜寿 埼玉県環境科学国際センター, 化学物質担当, 主任研究員 (30415393)
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2014: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Keywords | ネオニコチノイド系殺虫剤 / 水生昆虫 / パッシブサンプリング / 河川生態系 / 行動解析 / 種構成モニタリング / アレニウスプロット / 吸着速度定数 / 吸着係数 / 暴露時間 / 新規生物検定法 / 生態影響 / 環境動態 |
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| Outline of Final Research Achievements |
The purpose of this research was to develop an analytical method of neonicotinoid insecticides influence river ecosystems, and to present a new method of evaluating their toxicity to aquatic insects.The installation period and temperature were set in order to facilitate passive sampling. Passive sampling is a research method receiving increasing attention as a way to monitor relatively long-term changes in pesticide concentrations in river water, particularly for neonicotinoid insecticides that have an extremely high solubility and whose adsorption coefficient depends on the adsorbent resin.
To evaluate the effects of the insecticides on aquatic insects, species compositions were analyzed with artificial bases (blocks) installed on the riverbed, and video analysis was used to estimate the distance travelled per unit time (speed) by aquatic insect larva.
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