Studies on the proteins of Poekilocerus pictus. II--changes taking place in the haemolymph protein during maturation of female.

In all, 7 protein fractions have been detected in the haemolymph of Poekilocerus pictus by the polyacrylamide gel disc electrophoresis. Out of seven protein fractions, four fractions i.e.3,4,5 and 6 take major role in the vitellogenesis. These fractions are accumulated in the ovariectomised female insect. No yolk is deposited in the allatectomised female ovary. The protein fractions 4, 5 and 6 show high concentration of protein in the allatectomised female as compared to the show operated female. It is concluded that the synthesis of protein fraction 3 is controlled by the corpora allata while the fractions 4, 5 and 6 are controlled by the neurosecretory cells.