Results 191 to 200 of about 6,407 (203)

Resistance of Nilaparvata lugens to Six Insecticides in Taiwan1

Journal of Economic Entomology, 1982
A malathion-resistant strain of Nilaparvata lugens (Stal) developed in the laboratory by continuous selection of a field strain for nine generations gained 1,183-fold resistance as compared with a susceptible strain. An MIPC-resistant strain selected similarly for 16 generations developed 41-fold resistance.
Teh-Chi Chung, C. N. Sun, Chen-Yu Hung
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Are Outbreaks of Nilaparvata lugens (Stål) Associated With Global Warming?

Environmental Entomology, 2010
Outbreaks of the Nilaparvata lugens (Stål), have occurred frequently in China during the past few years, resulting in a broad and significant reduction in rice yield. N. lugens immigrate into China each spring from Southeast Asia, and the Guangxi Zhuang Autonomous Region is the first area affected.
Cheng-Yu Huang, Xiao-Xi Zhang, Wen Chen, Bao-Ping Zhai, Gao Hu, Zuo-Xiao Lin, De-Yu Xin, Mao-Chang Xie   +7 more
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The influence of temperature on the toxicity of insecticides to Nilaparvata lugens (Stål)

Pesticide Biochemistry and Physiology, 2019
The toxicity of insecticides is associated with a variety of factors including temperature, and global warming is bound to lead to the outbreak of pests; therefore, it is important to study the influence of temperature on insecticide toxicity and pest control.
Zhijie Ren, Wenhao Li, Shun He, Kaikai Mao, Xueying Qin, Ruoheng Jin, Jianhong Li, Hu Wan   +7 more
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Resistance of Nilaparvata lugens to MIPC and MTMC in Taiwan12

Journal of Economic Entomology, 1979
MIPC-(2-isopropylphenyl-N-methylcarbamate) and MTMC-(3-methylphenyl-N-methylcarbamate) resistant strains of Nilaparvata lugens (Stal) with resistance ratios of 6.1 and 8.0, respectively, were developed in the laboratory by continuous selection for 6 and 7 generations.
C. N. Sun, Yuo-Hua Lin, Hai-Tung Feng
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Wolbachia spreading dynamics in Nilaparvata lugens with two strains

Nonlinear Analysis: Real World Applications, 2021
Abstract The Nilaparvata lugens is primary vector of rice diseases such as rice ragged stunt. A recent study reported the Wolbachia wStri can cause the cytoplasmic incompatibility of N.lugens, and inhibit the infection and transmission of rice ragged stunt virus in the laboratory.
Tiejun Zhou, Zhigang Liu, Zhigang Liu
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Contribution of Glutathione S-Transferases to Imidacloprid Resistance in Nilaparvata lugens

Journal of Agricultural and Food Chemistry, 2020
The importance of glutathione S-transferases (GSTs) in imidacloprid resistance in Nilaparvata lugens, a major rice pest, and other insects was often excluded, mostly due to the slight effects of diethyl maleate (DEM) on synergizing imidacloprid in resistant populations. Here, we found that the synergistic effects of DEM were time-dependent. At 24 or 48
Zewen Liu, Xumin Lin, Haoli Gao, Na Yu, Yixi Zhang, Wei Liu, Baojun Yang, Baojun Yang   +7 more
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Parasites and Predators of Nilaparvata lugens in India

PANS, 1978
Abstract During a survey carried out in 1976 in Mandya (Karnataka), the following natural enemies were recorded on the rice brown planthopper, Nilaparvafa lugens Stal: Egg parasites — Baeus sp., Gryon sp., Oxyscelio sp. (all Scelionidae) and Oligosita sp.
Gavi Gowda, P. S. Rai, T. M. Manjunath
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Flight fuels in the brown planthopper Nilaparvata lugens

Journal of Insect Physiology, 1983
Abstract The flight fuels of Nilaparvata are a combination of carbohydrate and lipid. In insects of constant age, lipid deposits are proportional to body weight, as is the rate of utilisation of lipid in flight. Reserves of glycogen are more variable and show no correlation with body weight. They are also always extremely low, approximately 0.2% of
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Resistance to Nephotettix impicticeps and Nilaparvata lugens in Varieties of Rice

Nature, 1969
Of the many insect pests of rice, the rice green leafhopper, Nephotettix impicticeps (Motschulsky), and the brown planthopper, Nilaparvata lugens (Stal), are particularly damaging1. Light infestations reduce plant tillering, plant height, the number of productive tillers per plant and general crop vigour, and induce the production of unfilled grains ...
M. D. Pathak, M. E. Fortuno, C. H. Cheng
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Troponin C is required for copulation and ovulation in Nilaparvata lugens

Insect Biochemistry and Molecular Biology
Troponin C (TnC) is a calcium-binding subunit of the troponin complex that regulates muscle contraction in animals. However, the physiological roles of TnC, especially in insect development and reproduction, remain largely unknown. We identified seven TnC genes encoding four EF-hand motif protein in the rice pest, the brown planthopper Nilaparvata ...
Luyao Peng, Cui Zhang, Jinjin Ren, Yaxin Liu, Yanyuan Bao   +4 more
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