Action du jeûne et de Bacillus thuringiensis Berliner sur les protéines plasmatiques de Choristoneura fumiferana (Clem.) (Lepidoptera : Tortricidae)

Abstract

Total protein contents of the hemolymph of C. fumiferana larvae, prepupae and pupae were studied. These were electrophoretically separated into 14 bands classified as slow-moving and fast-moving proteins. During the 6th instar, hemolymph protein contents increased 8-9 times in control larvae mainly owing to slow-moving proteins. Protein concentration of slow-moving proteins were less pronounced in larvae that were starved and treated with B. thuringiensis, the treated larvae being more affected than the starved larvae. Larvae treated on day 1 of the 6th instar were more affected than those treated on day 4.