Two stable infections of Wolbachia pipientis, wMelPop and wMel, now established in Aedes aegypti, are being used in a biocontrol program to suppress the transmission of dengue. Any effects of Wolbachia infection on insecticide resistance of mosquitoes may undermine the success of this program. Bioassays of Ae. aegypti were conducted to test for differences in response to insecticides between Wo...

This study aimed to carry out a malaria situation analysis, species composition and susceptibility levels of the main malaria vector, Anopheles stephensi, to different insecticides in Bashagard. A longitudinal survey was conducted in 2 randomly selected villages in Bashagard. Malaria vectors were sampled by dipping method for the larvae and hand catch, night-biting catch, total catch, and shelt...

Malaria control is increasingly recognised as playing a key role in poverty reduction in high burdened countries. The programme for malaria eradication based on vector control using very large quantities of DDT started in 1949 in the country and resulted in a dramatic reduction in malaria incidence. Vector population recovery, mainly due to resistance to DDT in Anopheles populations as well as ...

Pyrethroid insecticides are widely used as one of the most effective control measures in the global fight against agricultural arthropod pests and mosquito-borne diseases, including malaria and dengue. They exert toxic effects by altering the function of voltage-gated sodium channels, which are essential for proper electrical signaling in the nervous system. A major threat to the sustained use ...

P revention, diagnosis, and treatment of vector-borne diseases such as malaria, leishmaniasis, and dengue fever is a complex problem. Major reductions in transmission require multiple different interventions, including both disease treatment and vector control. This is particularly crucial in the high-transmission areas where conditions are optimal, or when epidemics are triggered. However, ins...

The objective of this field trial was to assess the residual effectiveness of permethrin 10% treated mosquito nets on malaria control compared with untreated nets. The study was carried out between July and December 2007 in the Pong Nam Ron District of Chantaburi Province, Thailand. Mosquito population densities were assessed using the landing catch method. Mosquitoes were collected between 6:0...

Aedes aegypti, the primary vector of dengue, Zika, chikungunya, and yellow fever viruses, is known to be resistant pyrethroid-based insecticides in Florida. To improve our knowledge on mechanism(s) responsible for this resistance, we sequenced 106 Ae. aegypti individuals collected from throughout Florida examined mutations a insecticide resistance gene, voltage-gated sodium channel (VGSC; AAEL0...

The present study was aimed to assess the bedbugs susceptibility to pyrethroid insecticides using molecular analysis. With the aid of pest control companies, adult bedbugs were collected from various places such as hotels, residential houses, and industrial buildings in seven cities highly crowded with domestic and foreign tourists in Iran from May 2016 to August 2017. Bedbugs ...

Due to extensive use, human exposure to multiple pyrethroid insecticides occurs frequently. Studies of pyrethroid neurotoxicity suggest a common mode of toxicity and that pyrethroids should be considered cumulatively to model risk. The objective of this work was to use a pyrethroid mixture that reflects human exposure to common pyrethroids to develop comparative toxicokinetic profiles in rats, ...

Bioassays of Lacanobia subjuncta (Grote and Robinson) larvae established baseline LC50 values and identified the potential of reduced-risk, organophosphate replacement and naturally derived insecticides (eg chloronicotinyls, spinosyns, oxadiazines, insect growth regulators, microbial insecticides and particle films) to control this pest. The toxicities of these products were compared with those...