Abstract
In this study, the toxicity of an insecticide, Actellic 50EC, was tested against L3 and L4 instars of mosquito larvae Culiseta longiareolata (Macquart). The newly exuviated larvae were subjected to various concentrations (25, 40, and 75 μg/ l) for 24 hr and out until the adult stage. Probit analysis for L3 stage showed that following obdsevations continued to adult stage LC50=18.70 μg/ l and LC90= 60.81 μg/ l. On the other hand, L4 stage shows these were LC50= 36.42 μg/ l and the LC90= 102.45 μg/ l, respectively, indicating that it is more toxic to L3. This study reveals that lipids and carbohydrates have decreased, while there is an increase in proteins, which has been associated in some cases with morphological deformations.
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