ABSTRACT: Transcription profiles of a field collection of Anopheles gambiae M molecular form (i.e. Anopheles coluzzii) from a population from Cote d'Ivoire (West Africa) were compared to two laboratory strains and to a wild caught field strain (all carbamate insecticide susceptible) to investigate their differences in insecticide resistance. Both carbamate-exposed and carbamate-unexposed Cote d'Ivoire samples were compared to each susceptible strain, and also directly to one another (i.e. exposed vs. unexposed).
Project description:Transcription profiles of three field collections of Anopheles arabiensis from Tanzania were compared to investigate their phenotypic differences in insecticide resistance
Project description:Transcription profiles of three field collections of Anopheles arabiensis from Tanzania were compared to investigate their phenotypic differences in insecticide resistance
Project description:Transcription profiles of three field collections of Anopheles gambiae M molecular form (i.e. Anopheles coluzzii) from West Africa were compared to investigate their phenotypic differences in insecticide resistance. The susceptibility status for the individual samples was unknown but known for their source populations via phenotypic assays performed concurrently with the sample collections.
Project description:Anopheles gambiae isofemale families from Tororo, Uganda were assayed for resistance to lambda-cyhalothrin (1.5hr exposure). Resistant families were compared to susceptible families. A portion of each family was exposed to 0.05% lambda-cyhalothrin in order to determine the family phenotype. The families used for the array were of known phenotype but were themselves unexposed.
Project description:Transcriptome profiling of insecticide resistant field populations of Anopheles funestus from Benin compared to a susceptible lab strain FANG
Project description:A microarray experimental design with dye balancing was adopted to compare the gene expression profiles of the following experimental groups; Field collected Makkah and Jeddah strains unexposed to any insecticide Fully insecticide susceptible New Orleans and Rockefeller laboratory strains. Laboratory Jeddah strain (F5) without exposure to insecticides Laboratory Jeddah strains selected for deltamethrin resistance (F5). For each comparison (field, lab selected or unselected vs susceptible), three biological replicates were used. The two susceptible strains, New Orleans and Rockefeller served as reference.
Project description:Comparison of insecticide resistant mosquitoes (An. arabiensis) with control samples, comparison of resistant samples with susceptible (Dongola) strain and comparison of resistant (Sennar) strain with susceptible (Dongola) strain
Project description:Resistance to pyrethroids, the only insecticide approved for bednets, threatens control of the major malaria vector, Anopheles funestus, in Malawi. To improve the management of such resistance countrywide, it is crucial to understand the dynamics and mechanisms driving resistance in the field. In this study the levels of insecticide resistance were determined across the highly endemic densely populated lake and southern agricultural area. Insecticide resistance to pyrethoids was assessed using standardized WHO bioassay methods and resistant mosquitoes were hybridized to susceptible mosquitoes. This microarray analysis revealed the key role of cytochrome P450 genes such as CYP6P9a, CYP6P9b and CYP6M7. However, a significant shift in the over-expression of these CYP450s was detected across a south/north transect, with CYP6M7 more highly over-transcribed in the two northern collection sites and the tandemly duplicated genes, CYP6P9a and CYP6P9b, more greatly over-transcribed in the south.
Project description:Identification of genes associated with bendiocarb resistance. Mosquitoes collected as larvae from Nagongera and Kihihi, Uganda. Bendiocarb-resistant and unexposed female mosquitoes selected using standard WHO tube bioassays. RNA was extracted from pools of five individuals identified as An. gambiae s.s. Insecticide-susceptible mosquitoes from the Kisumu strain were included as controls. RNA hybridized in an interwoven loop design to compare four biological replicates each of resistant, unexposed, and laboratory mosquitoes.
Project description:Transcriptome profiling of a multi insecticide resistant strain of Anopheles gambiae from Burkina Faso compared to a susceptible strain Ngousso from Cameroon.