Development of insecticide resistance in Culex quinquefasciatus mosquito from different locations in India

Suman, Devi Shankar; Tikar, S. N.; Parashar, B. D.; Prakash, S.

doi:10.1584/jpestics.g09-36

Cited by 4 publications

(2 citation statements)

References 13 publications

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“…Further, development of resistance to temephos has already been reported in the larval population of Cx. quinquefasciatus 16 17 . Under these circumstances, the spinosad compound with a novel mode of action as a nicotinic agonist has shown no cross-resistance with existing insecticides and can be rotated with other classes of currently used mosquito larvicides for resistance management.…”

Section: Discussionmentioning

confidence: 99%

Field evaluation of the biolarvicide, spinosad 20 per cent emulsifiable concentrate in comparison to its 12 per cent suspension concentrate formulation against Culex quinquefasciatus, the vector of bancroftian filariasis in India

et al. 2018

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Background & objectives:Biolarvicides may offer alternatives to chemical larvicides as these are known to be safe to environment and selective against the target species. However, only a limited number of biolarvicides have been approved for mosquito larval control. In the current study, a new formulation of spinosad, 20 per cent emulsifiable concentrate (EC) was tested for its efficacy against Culex quinquefasciatus, in comparison to its 12 per cent suspension concentrate (SC).Methods:Spinosad 20 per cent EC was tested against Cx. quinquefasciatus immature at 25, 50, 100 and 150 mg active ingredient (ai)/m[2] in cesspits, drains and abandoned wells in comparison with spinosad 12 per cent SC at the optimum field application dosage of 50 mg ai/m[2].Results:The 20 per cent EC caused 90-100 per cent reduction of pupal density for 7-14 days in cesspits, 10-17 days in drains and 14-30 days in abandoned wells at all dosages tested. At lower dosages of 25 and 50 mg ai/m[2], >90 per cent reduction of pupal density was observed for one week in cesspits and street drains and for two weeks in abandoned wells. The effective duration of control provided by the higher dosages, 100 and 150 mg ai/m[2] was 1.4 to 2 times greater than the lower dosages, 25 and 50 mg ai/m[2].Interpretation & conclusions:The findings showed that the spinosad 20 per cent EC can be used for larval control against Cx. quinquefasciatus, at the dosage of 25 mg ai/m[2] at weekly interval in cesspits and drains and at fortnightly interval in abandoned wells. Spinosad 20 per cent EC could be one of the options to be considered for larval control under integrated vector management.

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Section: Discussionmentioning

confidence: 99%

Field evaluation of the biolarvicide, spinosad 20 per cent emulsifiable concentrate in comparison to its 12 per cent suspension concentrate formulation against Culex quinquefasciatus, the vector of bancroftian filariasis in India

et al. 2018

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“…The indiscriminate use of insecticides over more than half a century has resulted in high levels of insecticide resistance in many mosquito species [13] , [17] , [18] . We tested the resistance of five Chinese Cx.…”

Section: Discussionmentioning

confidence: 99%

Point Mutations Associated with Organophosphate and Carbamate Resistance in Chinese Strains of Culex pipiens quinquefasciatus (Diptera: Culicidae)

et al. 2014

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Acetylcholinesterase resistance has been well documented in many insects, including several mosquito species. We tested the resistance of five wild, Chinese strains of the mosquito Culex pipiens quinquefasciatus to two kinds of pesticides, dichlorvos and propoxur. An acetylcholinesterase gene (ace1) was cloned and sequenced from a pooled sample of mosquitoes from these five strains and the amino acids of five positions were found to vary (V185M, G247S, A328S, A391T, and T682A). Analysis of the correlation between mutation frequencies and resistance levels (LC50) suggests that two point mutations, G247S (r2 = 0.732, P = 0.065) and A328S (r2 = 0.891, P = 0.016), are associated with resistance to propoxur but not to dichlorvos. Although the V185M mutation was not associated with either dichlorvos or propoxur resistance, its RS genotype frequency was correlated with propoxur resistance (r2 = 0.815, P = 0.036). And the HWE test showed the A328S mutation is linked with V185M, also with G247S mutation. This suggested that these three mutations may contribute synergistically to propoxur resistance. The T682A mutation was negatively correlated with propoxur (r2 = 0.788, P = 0.045) resistance. Knowledge of these mutations may help design strategies for managing pesticide resistance in wild mosquito populations.

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Mosquito-Borne Diseases: Prevention Is the Cure for Dengue, Chikungunya and Zika Viruses

Suman

Chandel

Faraji

et al. 2018

Parasitology Research Monographs

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Development of insecticide resistance in Culex quinquefasciatus mosquito from different locations in India

Cited by 4 publications

References 13 publications

Field evaluation of the biolarvicide, spinosad 20 per cent emulsifiable concentrate in comparison to its 12 per cent suspension concentrate formulation against Culex quinquefasciatus, the vector of bancroftian filariasis in India

Field evaluation of the biolarvicide, spinosad 20 per cent emulsifiable concentrate in comparison to its 12 per cent suspension concentrate formulation against Culex quinquefasciatus, the vector of bancroftian filariasis in India

Point Mutations Associated with Organophosphate and Carbamate Resistance in Chinese Strains of Culex pipiens quinquefasciatus (Diptera: Culicidae)

Mosquito-Borne Diseases: Prevention Is the Cure for Dengue, Chikungunya and Zika Viruses

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