Behavioural and insecticidal effects of organophosphate-, carbamate- and pyrethroid-treated mosquito nets against African malaria vectors

Medical and Veterinary Entomology
Robert MalimaMark Rowland

Abstract

Three insecticides - the pyrethroid deltamethrin, the carbamate carbosulfan and the organophosphate chlorpyrifos-methyl - were tested on mosquito nets in experimental huts to determine their potential for introduction as malaria control measures. Their behavioural effects and efficacy were examined in Anopheles gambiae Giles s.s. (Diptera: Culicidae) and Anopheles funestus Giles s.s. in Muheza, Tanzania, and in Anopheles arabiensis Patton and Culex quinquefasciatus Say in Moshi, Tanzania. A standardized dosage of 25 mg/m(2) plus high dosages of carbosulfan (50 mg/m(2), 100 mg/m(2) and 200 mg/m(2)) and chlorpyrifos-methyl (100 mg/m(2)) were used to compare the three types of insecticide. At 25 mg/m(2), the rank order of the insecticides for insecticide-induced mortality in wild An. gambiae and An. funestus was, respectively, carbosulfan (88%, 86%) > deltamethrin (79%, 78%) > chlorpyrifos-methyl (35%, 53%). The rank order of the insecticides for blood-feeding inhibition (reduction in the number of blood-fed mosquitoes compared with control) in wild An. gambiae and An. funestus was deltamethrin > chlorpyrifos-methyl > carbosulfan. Carbosulfan was particularly toxic to endophilic anophelines at 200 mg/m(2), killing 100% of An. gamb...Continue Reading

References

May 1, 1997·Tropical Medicine & International Health : TM & IH·F N Binka, P Adongo
May 10, 2002·Trends in Parasitology·Morteza Zaim, Pierre Guillet
Jun 1, 2006·Advances in Parasitology·Jenny HillMark Rowland

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Citations

Apr 7, 2015·Journal of the American Mosquito Control Association·Steven DenhamKarla Saavedra-Rodriguez
Apr 23, 2014·The American Journal of Tropical Medicine and Hygiene·Jeroen SpitzenWillem Takken
Apr 9, 2020·Parasites & Vectors·Marissa K GrossmanMatthew B Thomas

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