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1 February 2013 Sublethal Effects of Paichongding on Nilaparvata lugens (Homoptera: Delphacidae)
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Abstract

Nilaparvata lugens (Stål) is a major rice pest in Asia. Paichongding is a novel neonicotinoid insecticide developed in 2008. The effects of this insecticide on life-table parameters and wing formation of N. lugens were examined in the laboratory. The results showed that paichongding could significantly reduce the fecundity of N. lugens, demonstrating further activity against this pest in addition to direct toxicity. The fecundity of N. lugens treated with LC20, LC30, LC40, and LC50 of paichongding were 87.44, 79.63, 63.31, and 52.66% of the control, respectively. The relative fitness values were 0.55, 0.41, 0.21, and 0.09, respectively, for LC20, LC30, LC40, and LC50 paichongding treatments. Sublethal concentrations of paichongding showed significant induction of macropterous offspring, which would be one kind of coping mechanism of N. lugens response to insecticide stress.

© 2013 Entomological Society of America
Xiaowa Qin, Jie Zhang, Qi Liu, Yong Chen, and Runjie Zhang "Sublethal Effects of Paichongding on Nilaparvata lugens (Homoptera: Delphacidae)," Journal of Economic Entomology 106(1), 10-15, (1 February 2013). https://doi.org/10.1603/EC11430
Received: 21 December 2011; Accepted: 1 November 2012; Published: 1 February 2013
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