【摘要】 [目的]研究多杀菌素(SPY)和毒死蜱(CHP)复配剂对3龄黏虫(Mythimna separata)的室内毒力及其对乙酰胆碱酯酶(ACh E)和羧酸酯酶(Car E)的联合作用。[方法]采用交互测定法。[结果]SPY∶CHP(1∶9)中单剂毒力具有相加作用,对ACh E和Car E的抑制作用显著高于毒死蜱;而SPY∶CHP(9∶1)中单剂毒力具有显著的增效作用,对ACh E抑制作用与毒死蜱无显著差异,对Car E的抑制作用仍显著高于毒死蜱。[结论]多杀菌素对毒死蜱的ACh E和Car E抑制作用具有诱导效应。更多还原

【Abstract】 [Aims] This study aims to investigate the synergistic interaction of the mixture of spinosyns(SPY) and chlorpyrifos(CHP) against Mythimna separata larvae and its combined effect on acetylcholinesterase(ACh E) and carboxylesterase(Car E). [Methods] Indoor toxicity and enzyme assays. [Results] The interaction between SPY and CHP caused an additive effect in increasing the larvicidal activity of SPY∶CHP(1∶9) and asignificant synergistic effect in improving the larvicidal activity of SPY∶CHP(9∶1). Moreover, SPY∶CHP(1∶9) showed higher inhibitory activity on ACh E and Car E, whereas SPY ∶CHP(9 ∶1) revealed a significant stronger inhibitory effect on Car E and a similar inhibitory effect on ACh E compared with the effect of chlorpyrifos. [Conclusions] The induction of SPY can enhance the inhibitory activity of chlorpyrifos against ACh E and Car E in M. separata larvae.更多还原