First Report on Adulticide Susceptibility Status of Aedes albopictus, Culex quinquefasciatus, and Culex vishnui from a Pig Farm in Tanjung Sepat, Selangor, Malaysia

Low, Van Lun; Lee, Hanlim; Nazni, Wasi Ahmad; Heo, Chong Chin; Azidah, Abdul Aziz; Sofian‐Azirun, Mohd

doi:10.2987/12-6287r.1

Cited by 19 publications

(14 citation statements)

References 13 publications

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“…pipiens selected strain with chlorpyrifos and lambda-cyhalothrin than the susceptible strain. This result was consistent with Chen et al (2013), who reported no significant correlation between mean esterase activity and temephos resistance for Aedes albopictus field populations.…”

Section: Pipienssupporting

confidence: 92%

Fitness cost of malathion resistance in Egyptian Culex pipiens populations

Elhawary

Soliman

Seif

et al. 2022

Medical Vet Entomology

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The extensive use of insecticides in agriculture and public health has resulted in the rapid development of insecticide resistance in mosquito populations. Therefore, in this study, we aimed to evaluate insecticide resistance costs on the fitness of Culex pipiens. Two Cx. pipiens field populations (Beheira malathion‐resistant and Gharbia malathion‐susceptible) were compared to the reference (sensitive) population. The biochemical composition and expression of four genes relevant to insecticide resistance were estimated in third instar larvae. Adult survival, female fecundity and egg hatchability were also determined. As per our findings, it was found that the total protein and carbohydrate contents in Beheira malathion‐resistant larvae were significantly lower than that in the reference larvae. Beheira malathion‐resistant larvae had higher phenoloxidase (PO) specific activity than the reference population. In terms of the relevant genes, only cytochrome P450 (CYP6F1) expression showed elevated levels in the Gharbia malathion‐susceptible population compared to the Beheira malathion‐resistant population. In esterases (Estα and Estβ) and glutathione S‐transferase, the tested populations did not show any significant differences. Compared to the reference mosquito population, Gharbia malathion‐susceptible Cx. pipiens males exhibited significantly longer median survival. Female fecundity and hatchability showed nonsignificant differences among the populations tested. In conclusion, malathion resistance can induce lower protein and carbohydrate contents, but higher PO activity in larvae.

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Section: Pipienssupporting

confidence: 92%

Fitness cost of malathion resistance in Egyptian Culex pipiens populations

Elhawary

Soliman

Seif

et al. 2022

Medical Vet Entomology

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“…The WHO exposure kit bioassay is widely accepted because it can measure insecticide susceptibility in many species of insect vectors worldwide (Braverman et al 2004, Ocampo et al 2011, Faraj et al 2012, Aïzoun et al 2013, Chen et al 2013. The assays can be run with live insects collected in the field or with their progeny reared in the laboratory.…”

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confidence: 99%

Assessing Insecticide Susceptibility of LaboratoryLutzomyia longipalpisandPhlebotomus papatasiSand Flies (Diptera: Psychodidae: Phlebotominae)

et al. 2015

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Chemical insecticides are effective for controlling Lutzomyia and Phlebotomus sand fly (Diptera: Psychodidae) vectors of Leishmania parasites. However, repeated use of certain insecticides has led to tolerance and resistance. The objective of this study was to determine lethal concentrations (LCs) and lethal exposure times (LTs) to assess levels of susceptibility of laboratory Lutzomyia longipalpis (Lutz and Nieva) and Phlebotomus papatasi (Scopoli) to 10 insecticides using a modified version of the World Health Organization (WHO) exposure kit assay and Centers for Disease Control and Prevention (CDC) bottle bioassay. Sand flies were exposed to insecticides coated on the interior of 0.5-gallon and 1,000-ml glass bottles. Following exposure, the flies were allowed to recover for 24 h, after which mortality was recorded. From dose-response survival curves for L. longipalpis and P. papatasi generated with the QCal software, LCs causing 50, 90, and 95% mortality were determined for each insecticide. The LCs and LTs from this study will be useful as baseline reference points for future studies using the CDC bottle bioassays to assess insecticide susceptibility of sand fly populations in the field. There is a need for a larger repository of sand fly insecticide susceptibility data from the CDC bottle bioassays, including a range of LCs and LTs for more sand fly species with more insecticides. Such a repository would be a valuable tool for vector management.

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“…Since 2000, resistance to temephos has been reported in Cuba and Venezuela, Panama, Brazil, El Salvador, the island of Martinique in the French Antilles, Argentina, Colombia, Trinidad, Costa Rica, and Ecuador [5,6,[26][27][28][29][30][31][32][33][34][35][36][37][38][39][40][41][42][43][44]. More recent reports have come from Peru, Mexico, and other non-Latin American countries such as Thailand, Malaysia, and India [7,9,10,[45][46][47][48][49]. However, some of these studies report the susceptibility of Ae.…”

Section: Discussionmentioning

confidence: 99%

Widespread Resistance to Temephos in Aedes aegypti (Diptera: Culicidae) from Mexico

Davila-Barboza,

Gutierrez-Rodriguez,

Juache-Villagrana

et al. 2024

Insects

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Organic synthetic insecticides continue to be part of the arsenal for combating vector-borne diseases in Mexico. Larvicides are a fundamental part of the process in programs for mosquito control, temephos being one of the most widely used in Mexico. In the present study, we analyzed the frequency of temephos resistance in twenty-three Aedes aegypti populations using the discriminating concentration (DC) of 0.012 mg/L. We also tested 5× DC (0.6 mg/L) and 10× DC (0.12 mg/L) of temephos. The resistance distribution to temephos was interpolated to unsampled sites using the inverse distance weighting (IDW) method. The populations of Ae. aegypti showed a high frequency of resistance (1× DC) with mortality rates below 93% in 22 of the 23 populations analyzed. Moderate resistance intensity (5× DC) was found in 78% of the populations, and high intensity (10× DC) in 30%. Predicted mortality was below 60% in the populations of the Pacific Coast, along the Gulf of Mexico, and in the state of Coahuila in Northeastern Mexico in relation to 1× DC; the Pacific Coast and Northeast patterns hold for 5× and 10× DC. The results suggest the need for rotation of the larvicide to effectively control the larval populations of the vector in the country.

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First Report on Adulticide Susceptibility Status of Aedes albopictus, Culex quinquefasciatus, and Culex vishnui from a Pig Farm in Tanjung Sepat, Selangor, Malaysia

Cited by 19 publications

References 13 publications

Fitness cost of malathion resistance in Egyptian Culex pipiens populations

Fitness cost of malathion resistance in Egyptian Culex pipiens populations

Assessing Insecticide Susceptibility of LaboratoryLutzomyia longipalpisandPhlebotomus papatasiSand Flies (Diptera: Psychodidae: Phlebotominae)

Widespread Resistance to Temephos in Aedes aegypti (Diptera: Culicidae) from Mexico

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