Resistance of Culex pipiens pallens larvae to commonly used insecticides in Handan City
JIN Zeng-jun
Abstract：Objective To evaluate the resistance of Culex pipiens pallens larvae to five commonly used insecticides in Handan City.Methods Under laboratory conditions,the larval dipping method was applied to measure the median lethal concentration (LC50).Batches of Cx.pipiens pallens larvae were exposed to five insecticide residues (dehamethrin,fenobucarb,beta-cypermethrin,permethrin and DDVP) in glass jars to determine their lethality rates.Resistance ratios were calculated as RR of the susceptible strains.Results The results indicated that the field collected strain of Cx.pipiens pallens was resistant to 4 kinds of insecticides,with the resistance ratioes of 15.17,5.50,35.33 and 20.18 to deltamethrin,fenobucarb,beta-cypermethrin and permethrin respectively.Conclusion Integrated managements should be conducted in Cx.pipiens pallens control in Handan City.
Keywords：Culex pipiens pallensinsecticide resistancelarval dipping method
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：2( 595-596 )