Resistance selection of Tuta absoluta(Meyrick)to tetraniliprole and cross-realistic analysis
[Aim]This study aims to investigate the trend in resistance development in Tuta absoluta(Meyrick)to tetraniliprole,and its cross-resistance to seven other insecticides.This research will provide a theoretical basis for the field application of tetraniliprole.[Methods]Resistance of T.absoluta to tetraniliprole was tested in the laboratory using the leaf dipping method.Subsequently,the resistance development trend and degree of cross-resistance were analyzed.[Results]After 11 generations of indoor selection over 14 generations,a strain with a resistance ratio of 18.67 times was obtained.The realized resistance heritability of Tuta absoluta to tetraniliprole was 0.188 5.Tetraniliprole resistance is expected to increase 10-fold in 3.59-8.00 generations under selective pressures of 50％-90％.The resistant strain had obvious cross-resistance to indoxacarb,and the resistance ratio was 8.89.Negative cross-resistance to emamectin benzoate and Bacillus thuringiensis was 0.8 and 0.25-fold,respectively.There was no cross-resistance to chlorantraniliprole,spinosad,chlorpyrifos,or lambda-cyhalothrin,with resistance ratios of 3.58,2.39,1.8,and 1.73-fold,respectively.[Conclusion]There is a risk of T.absoluta developing resistance to teraniliprole.Furthermore,the resistant strain of T.absoluta can produce cross-resistance with several other insecticides.These results establish a theoretical basis for the scientific application of teraniliprole in the field and promote the judicious rotation of pesticide use.
Tuta absolutatetraniliproleresistance selectioncross-resistance
NETL
NSTL
万方数据
