Abstract: 【Objective】The effects of quercetin on the growth and development and main detoxification enzymes activities of Calliptamus abbreviatus were preliminarily determined,which provided the basis for the development and utilization of biological pesticides against Calliptamus abbreviatus.【Methods】The 3-year-old grasshoppers （female）were fed with 0（CK）,0.001%,0.01%,0.1% and 1% quercetin solution,respectively. It was measured that the 7-day survival rate,dry weight,growth rate,reactive oxygen species（ROS）levels,and the activities of cytochrome P450（CYP450）,glutathione S-transferase（GST）,superoxide dismutase（SOD）and catalase（CAT）.【Results】Compared with CK,after treated with 0.01%,0.1% and 1% quercetin,the 7-day survival rate decreased by 18.29%,37.69% and 53.68%,dry weight decreased by 23.74%,28.25% and 30.25%,and growth rate decreased by 58.02%,69.02% and 73.96%,respectively. The 7-day survival rate,dry weight and growth rate were significantly negatively correlated with quercetin concentration（P<0.05）. ROS levels increased by 95.66%,173.56% and 157.04%,the activities of CYP450 increased by 118.09%,142.61% and 174.87%,the activities of GST increased by 143.83%,194.41% and 235.62%,the activities of SOD increased by 75.47%,97.37% and 107.95%,the activities of CAT increased by 299.49%,282.23% and 333.74%. ROS levels,the activities of CYP450 and the activities of GST were significantly positively correlated with quercetin concentration（P<0.05）. The activities of SOD and the activities of CAT were showing positively correlated with quercetin concentration,but the correlation had no significant difference（P>0.05）.【Conclusion】Quercetin has a certain inhibitory effect on the growth of Calliptamus abbreviatus,and has potential application value in the biological pesticide for the green control of Calliptamus abbreviates.

Key words: Quercetin, Calliptamus abbreviatus, Survival rate, Growth rate, Enzymatic activity