LIPOLYTIC ACTIVITY IN LARVAL HAEMOLYMPH OF HELICOVERPA ARMIGERA (HUBNER)

Lipolytic activity in larval haemolymph of gram pod borer, Helicoverpa armigera (Hubner) revealed optimum pH 7.8, incubation time 20 minutes, temperature 37° C, enzyme concentration 1% and substrate concentration 6% and Michaelis-Menten constant 0.12 x 10-2 mM. The gradual increase in larval haemolymph lipase activity was observed from 7-day larvae to 10-day larvae and decrease from 10-day larvae to 15-day larvae. The maximum lipase activity was observed in 10-day larvae. The physiological role of larval haemolymph lipase (EC 3.1.1.3) of H. armigera has been reported in present paper.