2016 Fiscal Year Final Research Report
Ecological effects test using aquatic insects and measurement of neurotoxic pesticides considering their influence on river ecosystems
| 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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| Project Period (FY) |
2014-04-01 – 2017-03-31
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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 |
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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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| Free Research Field |
環境生物学
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