Susceptibility of symbionts ofRhizopertha dominica F to various sulpha drugsin vivo
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Successive generations ofRhizopertha dominica were reared on sulpha drugs mixed diets, at varying sulpha drug concentrations. The symbionts from the above treated insects were adversely affected but the drugs failed to eliminate them totally. Heavy mortality as well as loss in multiplication potential of the symbionts occurred when concentrations were increased. There was comparatively higher mortality of symbionts in F2 and F3 generations as compared to F1 generation. The sulpha somids, sulphadiazine and sulphathiozole were more effective than sulphamethaxazole and pentidsulphas. These observations may be useful for eliminating the obligatory symbionts from the host for controlling it biologically.
KeywordsRhizopertha dominica sulpha drugs susceptibility symbionts mycetomes mycetocytes
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