Interaction of a pesticide and larval competition on life history traits of Culex pipiens

Acta Tropica
Ephantus J MuturiBarry W Alto

Abstract

Mosquito larval development occurs in aquatic habitats that are directly or indirectly exposed to chemical contaminants. Little is known about how interaction of these chemicals with other biotic and abiotic stressors impact mosquito populations. We used two levels of nutrient (low and high) and four larval densities (10, 20, 30, 40) to examine the effects of low concentrations of insecticide malathion, on Culex pipiens L. mosquitoes experiencing stress from larval competition. Addition of malathion at the high nutrient condition enhanced survival with increasing larval densities, but this effect was not observed at low nutrient condition. Males exposed to malathion were significantly larger than those from control treatments while the effect of malathion on size of females varied with larval density and the level of nutrients. Larval exposure to malathion and low nutrient resulted in significantly larger females with increases in larval densities compared with other treatments. The effect of malathion on male longevity varied with larval density and amount of nutrients. At higher densities, male longevity was consistently higher in low nutrient than in high nutrient conditions and addition of malathion in high nutrient treatme...Continue Reading

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Citations

Apr 2, 2011·Vector Borne and Zoonotic Diseases·Ephantus J Muturi, Barry W Alto
Nov 10, 2013·Journal of the American Mosquito Control Association·Ephantus J MuturiWolfgang R Mukabana
Mar 7, 2012·Medical and Veterinary Entomology·B W AltoR L Lampman
May 3, 2012·Journal of Vector Ecology : Journal of the Society for Vector Ecology·Ephantus J MuturiAllison Montgomery
May 14, 2011·Tropical Medicine & International Health : TM & IH·Ephantus J MuturiMary A Schuler
Sep 15, 2016·Parasites & Vectors·Tabitha W KibuthuEphantus J Muturi
Mar 27, 2018·PLoS Neglected Tropical Diseases·Maarten SchramaPeter M van Bodegom
Jan 11, 2020·Journal of the American Mosquito Control Association·Mark E CliftonJustin Harbison
Aug 13, 2020·Scientific Reports·Maarten SchramaErin E Gorsich

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