Susceptibility of Mosquito Larvae to Conventional Insecticides in a Tropical Arid Ecosystem
The susceptibility of 4th instar larvae of Aedes aegypti and Culex quinquefasciatus to dieldrin, dichlovos and cypermethrin were evaluated in laboratory. Larval mortality was assessed 24 hour afterexposure. The result showed that the LDi, .50 values for Aedes aegypti exposed to dieldrin, dichlovos and cypermethrin were 0.48, 37.09 and 0.29 μg per liter respectvely. The LD50 values for Culex quinquefasciatus of exposed to dieldrin, dichlovos and cypermethrin were 0.11 10.05 and 005 μg per liter respectively.
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