2017 Fiscal Year Final Research Report
Evaluation of impacts of nursery-box application insecticides on paddy dependent dragonflies
| Project/Area Number |
26850229
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Environmental agriculture(including landscape science)
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| Research Institution | Shizuoka University (2016-2017)
National Institute for Environmental Studies (2014-2015) |
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Principal Investigator |
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| Research Collaborator |
GOKA Koichi
HAYASHI I. Takehiko
HAYASAKA Daisuke
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| Project Period (FY) |
2014-04-01 – 2018-03-31
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| Keywords | トンボ / 越冬ステージ / 殺虫剤 |
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| Outline of Final Research Achievements |
The impacts of two systemic insecticides, fipronil and imidacloprid, on aquatic organisms especialy two paddy dependent dragonflies, Sympetrum frequens and Orthetrum albistylum speciosum, was investigated on experimental rice paddy fields. Concentrations of these insecticides in the paddy water were reduced to the limit of detection as time proceeds. However, residuals of these insecticides in the paddy soil were detected even next year. Although both insecticides affect on both dragonfly species, the degree and pattern of these were different between two insecticides.
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| Free Research Field |
群集生態学
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