The joint toxicity of bifenazate and propargite mixture against Tetranychus urticae Koch
文献类型: 外文期刊
第一作者: Liang, Xiao
作者: Liang, Xiao;Chen, Qing;Wu, Chunling;Zhao, Huiping;Liang, Xiao;Chen, Qing;Wu, Chunling;Zhao, Huiping;Liang, Xiao;Chen, Qing;Wu, Chunling;Zhao, Huiping;Liang, Xiao;Chen, Qing;Wu, Chunling;Zhao, Huiping
作者机构:
关键词: Tetranychus urticae;bifenazate;propargite;joint toxicity;glutathione s-transferase
期刊名称:INTERNATIONAL JOURNAL OF ACAROLOGY ( 影响因子:1.056; 五年影响因子:0.916 )
ISSN: 0164-7954
年卷期: 2018 年 44 卷 1 期
页码:
收录情况: SCI
摘要: Bifenazate is a new type of hydrazine derivative acaricide which has been registered in China since 2008. In order to prolong the service life of bifenazate, the joint toxicity of bifenazate and propargite against Tetranychus urticae was evaluated in this study. The results showed that, with the mass ratio of 5: 1 for bifenazate and propargite, the cotoxicity coefficient was 137.5, which showed synergistic toxicity to T. urticae. Moreover, when T. urticae was treated by the mixture of bifenazate and propargite (5: 1) at the serial concentrations of 20.00 mg/L, 14.29 mg/L, 11.11 mg/L, 9.09 mg/L, and 7.69 mg/L for 24 h, the activities of glutathione s-transferase (GST) in T. urticae were 3.37, 3.64, 3.93, 4.04, and 4.08 mmol/min/mgPro, which were significantly (P < 0.05) lower than those in T. urticae being treated by bifenazate (7.25, 6.82, 6.71, 6.44, and 5.81 mmol/min/mgPro) and propargite (10.13, 9.79, 9.14, 8.93, and 8.44 mmol/min/mgPro) individually at the same concentration, indicating that the mixture showed a joint inhibition effect on the activities of GST in T. urticae. However, the activities of mixed-function oxidase, carboxylesterase, and acetylcholinesterase in T. urticae treated by bifenazate and propargite (5: 1) were not significantly different from those treated by bifenazate and propargite individually. This study provided theoretical basis for reasonably application of bifenazate and propargite mixture in T. urticae control.
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