The effectiveness of three photosensitizing dyes (rose bengal, eosin yellow lactone and methylene blue) was evaluated against adult house fly, Musca domestica L. in the laboratory. As judged by a comparison of LC50 values, rose bengal is the most effective dye followed by eosin yellow lactone, then methylene blue. The biochemical effect of the most effective dye, rose bengal was also studied. Results revealed significant changes of the total proteins and total lipids of house fly adults, while no significant difference was observed between the total carbohydrate contents of treated and control samples.
Key words: Photosensitizing dyes, house fly, bioassay, biochemistry
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