HUBEI AGRICULTURAL SCIENCES ›› 2018, Vol. 57 ›› Issue (8): 55-57.doi: 10.14088/j.cnki.issn0439-8114.2018.08.014

• Plant Protection • Previous Articles     Next Articles

Effects of Azadirachtin on Respiration and Protective Enzymes Activity of Tenebrio molitor Larvae

GUO Chun-hui1, NING Chang-long2, WANG Rui-rui1, WU Guang1, ZHAO Peng-fei1, YANG Bing-ye3, YANG Zhen-de1   

  1. 1.College of Forestry,Guangxi University,Nanning 530001,China;
    2.Guangxi Liuwan State-owned Forest Farm,Yulin 537000,Guangxi,China;
    3.College of Plant Protection,Fujian Agriculture and Forest University,Fuzhou 350002,China
  • Received:2017-09-29 Published:2018-04-25

Abstract: To investigate the effects of botanical pesticide on the respiration and protective enzymes of coleopteran,CO2 release rate and protective enzymes in the 8th instar larvae of Tenebrio molitor fed with azadirachtin were examined. The results showed that the CO2 release rate and protective enzymes of T. molitor fed with azadirachtin increased initially and then declined rapidly. The highest CO2 release rate of T. molitor was 13.2 μL/h after 6 hours of feeding with azadirachtin and then fell quickly,remarkably lower than the value of control groups. The maximum activities of protective enzymes including SOD,CAT and POD appeared after 6 hours of feeding with azadirachtin, which were 2.34,2.91 and 1.98 times than those in the control group,respectively. And these protect enzymes lowered fast subsequently.

Key words: azadirachtin, Tenebrio molitor, respiratory, protective enzymes

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