Pest Management Science (2017) 73, 1169-1178

Rong Yao, Dan-Dan Zhao, Shuai Zhang, Li-Qi Zhou, Xin Wang, Cong-Fen Gao and Shun-Fan Wu (2017)
Monitoring and mechanisms of insecticide resistance in Chilo suppressalis (Lepidoptera: Crambidae), with special reference to diamides
Pest Management Science 73 (6), 1169-1178
Abstract:
BACKGROUND
The rice stem borer, Chilo suppressalis Walker (Lepidoptera: Crambidae), is one of the most economically important pests of rice in Asia. Chemical control remains the most efficient primary means for controlling this pest.
RESULTS
Significant variations among field populations in their resistance to seven insecticides were observed. The populations exhibited LC₅₀ values that ranged between 0.605 and 108.088 mg AI L^-1 for chlorantraniliprole and between 0.046 and 3.919 mg AI L^-1 for flubendiamide. The YY14 population collected from Yuyao in Zhejiang Province in 2014 showed a moderate resistance level to the two diamides, i.e. up to 77.6-fold and 42.6-fold for chlorantraniliprole and flubendiamide respectively. Synergism tests and biochemical assays showed no obvious correlations between diamide resistance and three detoxifying enzymes. Sequence comparison of the ryanodine receptor gene between the YY14 resistant population and susceptible population revealed that a glycine to glutamic acid substitution (G4910E) was presented in the YY14 population.
CONCLUSION
G4910E mutation might be involved in the resistance evolution of C. suppressalis to the diamides. An appropriate insecticide resistance management programme should be established to maintain the effectiveness of the insecticides and to ensure sustainable management.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Congfen Gao

Research topic(s) for pests/diseases/weeds:
pesticide resistance of pest

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Chilo suppressalis