Insecticide susceptibilities of the two rice planthoppers <scp><i>Nilaparvata lugens</i></scp> and <scp><i>Sogatella furcifera</i></scp> in East Asia, the Red River Delta, and the Mekong Delta

Matsumura, Masaya; Sanada‐Morimura, Sachiyo; Sonoda, Shoji; Thanh, Dinh Van; Chien, Ho Van; Tuong, Phan Van; Loc, Phung Minh; Liu, Zewen; Zhu, Zhiliang; Li, Jianhong; Wu, Gang; Huang, Sheng-Lung

doi:10.1002/ps.4729

Cited by 50 publications

(37 citation statements)

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“…From the southern Vietnam population, we created a very strongly resistant strain with an LD 50 value of 373.85 µg g −1 and the resistance ratio with the F 0 strain was about eight times higher (Appendix S1) in the 25th generation after imidacloprid selection. This value is the same level as the highest population ever reported from the southern region of Vietnam . Even in the control strain, the LD 50 values in VT‐Con were maintained at 50–100 µg g −1 after 20 generations.…”

Section: Discussionsupporting

confidence: 75%

“…Effective insecticides against N. lugens , such as imidacloprid, have been widely overused for pest‐insect control throughout Asia since the early 1990s. Resistance to several insecticides was reported in field populations in Indochina, East Asia in the mid‐2000s . Most notably, imidacloprid resistance in the southern and northern regions of Vietnam has been reported since the mid‐2000s, although resistance has not yet developed in the Philippines .…”

Section: Introductionmentioning

confidence: 99%

“…Resistance to several insecticides was reported in field populations in Indochina, East Asia in the mid‐2000s . Most notably, imidacloprid resistance in the southern and northern regions of Vietnam has been reported since the mid‐2000s, although resistance has not yet developed in the Philippines . Along with the development of resistance, outbreaks of N. lugens have frequently occurred in various Asian countries since the mid‐2000s.…”

Section: Introductionmentioning

confidence: 99%

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Selection for imidacloprid resistance and mode of inheritance in the brown planthopper, Nilaparvata lugens

Sanada‐Morimura

Fujii

Chien³

et al. 2019

Pest Management Science

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BACKGROUND: Strong resistance to imidacloprid in Nilaparvata lugens (Stål) has developed in Southeast and East Asia. Although the mode of inheritance for resistance is very useful information for pest control, this information is unknown in N. lugens. Here, we established two resistant strains that were selected from field populations in Vietnam and the Philippines, and conducted crossing experiments to determine the inheritance pattern. RESULTS:The resistance ratio of 50% lethal dose (LD 50 ) values for the two resistance-selected strains, i.e., resistant strains originating from Vietnam (VT-Res) and the Philippines (PH-Res), to their control strains were ∼ 8-and 157-fold, respectively. dominance was 0.81 and 0.82, and 0.95 and 0.96, respectively. Analysis of the F 2 populations and backcrosses to the parental strains indicated that resistance is a major-gene trait following Mendelian inheritance. The strength of the resistance was suppressed by pre-treatment with piperonyl butoxide, an inhibitor of cytochrome P450-monooxygenases. CONCLUSION: Our results suggest that imidacloprid resistance in N. lugens is autosomal and an almost completely dominant major-gene trait that is likely manifested by high expression levels of a detoxification enzyme. Reciprocal cross experiments between VT-Res and the susceptible strain (S-strain), and between PH-Res and the S-strain showed that the degree of

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Section: Discussionsupporting

confidence: 75%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Selection for imidacloprid resistance and mode of inheritance in the brown planthopper, Nilaparvata lugens

Sanada‐Morimura

Fujii

Chien³

et al. 2019

Pest Management Science

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“…With increased application dose and treatment frequency, locusts will inevitably become resistant to this chemical. Previous studies on insect resistance to phenylpyrazole insecticides have shown that the white‐backed planthopper, brown planthopper, grey planthopper, Plutella xylostella and other pests have different levels of resistance to fipronil . Moreover, it was found that insects with resistance to fipronil had a cross‐resistance with ethiprole and butene‐fipronil.…”

Section: Introductionmentioning

confidence: 99%

“…Previous studies on insect resistance to phenylpyrazole insecticides have shown that the white-backed planthopper, brown planthopper, grey planthopper, Plutella xylostella and other pests have different levels of resistance to fipronil. [5][6][7][8][9][10] Moreover, it was found that insects with resistance to fipronil had a cross-resistance with ethiprole and butene-fipronil. 11,12 One of the main mechanisms of resistance to insecticides is metabolic resistance.…”

Section: Introductionmentioning

confidence: 99%

Detoxification enzymes associated with butene‐fipronil resistance in Epacromius coerulipes

Jin

Gao

Zhang

et al. 2019

Pest Management Science

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BACKGROUND Epacromius coerulipes is a widely distributed locust pest species. Chemical control is the main method used to kill locusts; however, this can result in the selection of locusts with resistance to chemical pesticides. Therefore, the study of resistance is of great significance for the sustainable management of locusts. RESULTS In this study, to investigate the relationship between detoxification enzymes and butene‐fipronil resistance in E. coerulipes, resistant strains of the locust were compared with sensitive strains. The synergism of synergistic agents was significantly enhanced, and the activities of multifunctional oxidase, carboxylesterase, and glutathione sulfur transferase were significantly increased. Transcriptome sequencing revealed 226 detoxification enzyme genes and 23 upregulated genes. Neighbor‐joining was used to construct a phylogenetic tree of related gene families, which included 59 P450 genes, 52 carboxylesterases (CarE) genes, and 25 glutathione S‐transferase (GST) genes. Reverse transcription polymerase chain reaction (RT‐PCR) analysis results of overexpressed genes in the resistant population combined with a phylogenetic tree showed that four P450 genes belonged to the CYP6, CYP4, CYP18 and CYP302 families, two CarE genes belonged to Clade A families, and one GST gene belonged to the Sigma family. These family members were annotated as detoxification enzyme genes of metabolic insecticide in the transcriptome databases. CONCLUSIONS This study showed that P450, CarE and GST together resulted in moderate resistance to butene‐fipronil in locusts. The analysis revealed several overexpressed detoxification enzyme genes that will be the focus of future studies on the mechanism of resistance to butene‐fipronil. © 2019 Society of Chemical Industry

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Migration sources and pathways of the pest species Sogatella furcifera in Yunnan, China, and across the border inferred from DNA and wind analyses

Sun

et al. 2020

Ecology and Evolution

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The migration sources and pathways of Sogatella furcifera (Horváth) in topologically complex regions like Yunnan, China, and adjacent montane areas have long been a challenging task and a bottleneck in effective pest forecast and control. The present research reinvestigated this issue using a combination of mtDNA and long‐term historical wind field data in an attempt to provide new insights. Genetic analyses showed that the 60 populations of S. furcufera collected across Myanmar, Thailand, Laos, Vietnam, Yunnan, Guizhou, and Sichuan lack genetic structure and geographic isolation, while spatial analysis of haplotype and diversity indices discovered geographic relevance between populations. Migration rate analysis combined with high‐resolution 10‐year wind field analysis detected the following migration sources, pathways, and impacted areas which could explain the outbreak pattern in Yunnan. (a) Dominating stepwise northward migrations originated from northern Indochina, southern Yunnan, and central‐eastern Yunnan, impacting their northern areas. (b) Concurring summer–autumn southward (return) migration originated from nearly all latitude belts of Sichuan and Yunnan mainly impacting central and southern Yunnan. (c) Regular eastward and summer–autumn westward migrations across Yunnan. The northward migration reflects the temporal rhythm of gradual outbreaks from the south to the north in a year, while the return migration may explain the repeated or very severe outbreaks in the impacted areas. To form a better pest forecast and control network, attention must also be paid to the northern part of Yunnan to suppress the impact of return migration in summers and autumns.

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Insecticide susceptibilities of the two rice planthoppers Nilaparvata lugens and Sogatella furcifera in East Asia, the Red River Delta, and the Mekong Delta

Cited by 50 publications

References 26 publications

Selection for imidacloprid resistance and mode of inheritance in the brown planthopper, Nilaparvata lugens

Selection for imidacloprid resistance and mode of inheritance in the brown planthopper, Nilaparvata lugens

Detoxification enzymes associated with butene‐fipronil resistance in Epacromius coerulipes

Migration sources and pathways of the pest species Sogatella furcifera in Yunnan, China, and across the border inferred from DNA and wind analyses

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