Abstract
Antimicrobial peptides (AMPs) constitute a major arm of defense in mosquitoes against microbes. The purpose of this study was to determine which of the peptides are produced in the mosquito hemolymph after bacterial treatment. Culex pipiens (Diptera: Culicidae) larvae, collected from drainage canal in Suez Governorate, Egypt, were treated with LC80 of Bacillus sphaericus strain 2362 (0.035 ppm). The hemolymph of bacteria-treated Cx. pipiens mosquitoes and non-treated mosquitoes as control were extracted and undergo electrophoresis, using a Bio-Rad Mini-protean II cell. In Cx. pipiens mosquitoes emerging from bacteria-treated larvae, a band of protein was detected at 165 kDa. This protein was more likely to be Thioester-containing protein 1 (TEP1). Understanding mosquito resistance mechanism to bacterial control is crucial to build up programs to overcome such resistance.
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