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TOXICITY OF DICHLORVOS 50EC AND CHLORPYRIFOS 40EC AGAINST HOUSE FLY, MUSCA DOMESTICA L.

Sohail Ahmed, Mohammad Irfanullah

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Abstract

Base line data of susceptibility of a laboratory reared strain of Musca domestica to dichlorvos 50EC and chlorpyrifos 40EC in a range of concentrations from 250 to 5000 ppm of the formulated insecticides in acetone was determined. These concentrations in a volume of 5 ml were added to 25 gm of granulated sugar in a petri dish. Sesame oil was used, as the synergist. Insecticide was mixed with sesame oil in 1:1 and 1:2 ratio to obtain KDsdLCso of the insecticide + synergist combination. House fly was allowed to feed on the insecticide coated sugar for 48 hr. Knockdown and mortality data was observed after 1, 2, 4, 6, 8, 12, 24 and 48 hours. The results showed that dichlorvos was the most effective with LCsovalue, 122 ppm and with the synergist combination, none of the two insecticides proved effective. Toxicity relationship of these insecticides with sesame oil is discussed

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Base line data of susceptibility of a laboratory reared strain of Musca domestica to dichlorvos 50EC and chlorpyrifos 40EC in a range of concentrations from 250 to 5000 ppm of the formulated insecticides in acetone was determined. These concentrations in a volume of 5 ml were added to 25 gm of granulated sugar in a petri dish. Sesame oil was used, as the synergist. Insecticide was mixed with sesame oil in 1:1 and 1:2 ratio to obtain KDsdLCso of the insecticide + synergist combination. House fly was allowed to feed on the insecticide coated sugar for 48 hr. Knockdown and mortality data was observed after 1, 2, 4, 6, 8, 12, 24 and 48 hours. The results showed that dichlorvos was the most effective with LCsovalue, 122 ppm and with the synergist combination, none of the two insecticides proved effective. Toxicity relationship of these insecticides with sesame oil is discussed

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Available abstract

Base line data of susceptibility of a laboratory reared strain of Musca domestica to dichlorvos 50EC and chlorpyrifos 40EC in a range of concentrations from 250 to 5000 ppm of the formulated insecticides in acetone was determined. These concentrations in a volume of 5 ml were added to 25 gm of granulated sugar in a petri dish. Sesame oil was used, as the synergist. Insecticide was mixed with sesame oil in 1:1 and 1:2 ratio to obtain KDsdLCso of the insecticide + synergist combination. House fly was allowed to feed on the insecticide coated sugar for 48 hr. Knockdown and mortality data was observed after 1, 2, 4, 6, 8, 12, 24 and 48 hours. The results showed that dichlorvos was the most effective with LCsovalue, 122 ppm and with the synergist combination, none of the two insecticides proved effective. Toxicity relationship of these insecticides with sesame oil is discussed

Key concepts: Dichlorvos, Toxicology, Musca, Chlorpyrifos, Chemistry, Toxicity, Sesame oil, Biology

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TOXICITY OF DICHLORVOS 50EC AND CHLORPYRIFOS 40EC AGAINST HOUSE FLY, MUSCA DOMESTICA L. — Research Paper | ScholarLens