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Position: Home > Articles > Toxicities of several insecticides and inhibition of acetylcholinesterase in Aphis gossypii Plant Protection 2011,37 (1) 86-89

几种常用杀虫剂对瓜蚜的毒力和对乙酰胆碱酯酶的抑制作用

作  者:
于永成;刁青云;李海平
单  位:
中国农业科学院蜜蜂研究所;内蒙古农业大学农学院
关键词:
瓜蚜;杀虫剂;毒力;乙酰胆碱酯酶
摘  要:
用叶片药膜法测定了4种常用杀虫剂氧乐果、辛硫磷、三唑磷、吡虫啉对呼和浩特市郊蔬菜基地温室黄瓜上发生的瓜蚜的毒力。结果表明,瓜蚜对吡虫啉最敏感,LC50仅为4.203 mg/L,氧乐果、辛硫磷、三唑磷对瓜蚜的LC50分别为21.70、38.86、43.30 mg/L。研究明确了3种有机磷杀虫剂对瓜蚜体内乙酰胆碱酯酶AChE均有明显的抑制作用,并随着抑制时间的延长,抑制率增加。I50值分别为氧乐果9.6×10-6mol/L,辛硫磷11.4×10-6mol/L,三唑磷17.1×10-6mol/L。
译  名:
Toxicities of several insecticides and inhibition of acetylcholinesterase in Aphis gossypii
作  者:
Yu Yongcheng1,Diao Qingyun2,Li Haiping1(1.Department of Agronomy,Inner Mongolia Agricultural University,Hohhot 010019,China;2.Institute of Apiculture,Chinese Academy of Agricultural Sciences,Beijing 100093,China)
关键词:
Aphis gossypii Glover;insecticides;toxicity;acetylcholinesterase
摘  要:
The toxicities of 4 common insecticides to Aphis gossypii Glover on cucumber plants were studied in the greenhouses using leave-dipping method.The results showed that A.gossypii was most sensitive to imidacloprid in the insecticides tested,and LC50 was 4.203 mg/L.The LC50 values for omethoate,phoxim and triazophos were 21.70,38.86 and 43.30 mg/L,respectively.It was shown that 3 OP insecticides tested could significantly inhibit the activity of AChE in A.gossypii,and their inhibition activities increased over time.The I50 values of omethoate,phoxim and triazophos to AChE were 9.6×10-6,11.4×10-6 and 17.1×10-6 mol/L,respectively.

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