Control with essential oils of cumin(Cuminum cyminum) against Tribolium confusum and influence of metabolic enzyme activity

The study was used the methods of fumigant to measure the effects of physiological and biochemical index of T. confusum. The motality of T. confusum was 95% after 24 h of treatment at 30 μL/L cumin essential oil. The motality rate showed positive correlation with concentration and treatment time. Through T. confusum fumigant by the essential oil of cumin,the result showed that the activity of Ach E was appeared highest at 8 h,detoxification enzymes ACP presented variation trend,increased at first and then decreased. ALP and Car E activity were significantly higher than the control fumigation and vitality of these two enzymes were shown a rising trend. The activity of GST was significant inhibited(p ≤0.05) during the treatment. In conclusion,the essential oil of cumin possessed activity of repellency and fumigation,and contact toxicity against T. confusum.The insectieidal mechanism mainly involved the activities of many impotant enzymes.