Abstract
Proteins of the haemolymph and fat body of Henosepilachna adults were analysed by polyacrylamide gel electrophoresis and the changes in the protein components were compared during the prediapause period in relation to the diapause induction. Some of the female-specific proteins like vitellogenin were identified but these proteins were not the major ones in the ovary of this species. There were no diapause-specific proteins, while the quantity of most of the protein components in the haemolymph and fat body increased with the lapse of the prediapause period. A protein in the haemolymph disappeared at the time corresponding to the loss of photoperiodic sensitivity when the fat body was fully developed for the diapause. Chromoproteins, which were colourless immediately after adult emergence, became yellowish with a slight decrease in their relative electrophoretic mobilities, after the onset of adult feeding.
