Impact of Beauveria bassiana Bb00 Infection on Nutritional Physiology and Respiration of Apriona germari larvae

The effect of Beauveria bassiana on the nutritional physiology and respiration of Apriona germari larvae was studied.The results showed that the food consumption, weigh gain and efficiency of conversion of ingested food (ECI) of the infected larvae were significantly lower than that of the control.After infected for 5 d,the ECI was negative and the larva was nearly dead.To resist the B.bassiana, the respiration increased 3 d after inoculation.And 5 d later, the resist system of the insect was destroyed and the respiration metabolism level was decreased.When the larva was nearly dead at the 7 d,the respiration decreased to very low level.