Measurement of cholinesterase activity in Thrips palmi Karny.
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概要
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Some attempts were made to measure the cholinesterase activity of Thrips palmi KAR-NY by the method described by ELLMAN et al. Activity of cholinesterase of T. palmi was 1/30 of that of the brown planthopper, Nilaparvata lugens STAHL, and at least 50 female adults were necessary for one measurement. The activity of cholinesterase decreased rapidly even under refrigeration conditions, that is, the enzyme activity of the brown planthopper did not decrease within four days although that of T. palmi dropped to half of the initial value within 24 hours. Fifty per cent inhibition concentration of Bassa and methidathion-oxon for the T. palmi populations consecutively sprayed with Bassa and methidathion was large compared to that of the populations without pesticide application.
- 九州病害虫研究会の論文
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