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1983—1986年就北京及河北省廊坊、香河、涿鹿等地区的瓜-棉蚜(Aphis gossypii Glov.)对拟除虫菊酯杀虫药剂的抗药性作了系统监测。试验结果表明,北京、廊坊及香河等地区的瓜-棉蚜种群对氰戊菊酯及溴氰菊酯已产生了一定程度的抗性。以LC50及LC95进行抗性比较,对氰戊菊酯分别为519和6416倍;对溴氰菊酯为401和14805倍。蚜体中水解α-乙酸萘酯酶(以下简称酯酶)的活性与其对氰戊菊酯及溴氰菊酯的抗性程度密切相关,相关系数均大于0.9,均在显著水平以上。因此、酯酶是瓜-棉蚜抗拟除虫菊酯的主要抗性机制之一。
1983-1986 Systemic monitoring of pyrethroid insecticide resistance in Aphis gossypii Glov., Beijing and Langfang, Xianghe, Zhuolu and other areas in Beijing. The results showed that the populations of melon-cotton aphid in Beijing, Langfang and Xianghe had some degree of resistance to fenvalerate and deltamethrin. The LC50 and LC95 resistance were 519 and 6416 times for fenvalerate and 401 and 14,805 times for deltamethrin. The activity of hydrolyzing α-naphthylacetate esterase (hereinafter referred to as esterase) in aphid was closely related to its resistance to fenvalerate and deltamethrin. The correlation coefficients were all above 0.9, all above the significant level. Therefore, esterase is one of the major resistance mechanisms of guaifera to pyrethroids.