Histopathological Studies on Dead Larvae of Pectinophora Gossypiella (Saunders) Experimentally Killed with -Endotoxin of Bacillus Thuringiensis (Sotto)

Newly hatched larvae of pink bollworm (Pectinophora gossypiella) were fed in 1020 g/ml -Endotoxin, B. thuringiensis in an artificial diet. Microtomical studies on dead larvae were carried out. 5 thick sections revealed varied histopathological changes leading to disorientation and rupture of epithelial cells of the gut which ultimately may have lead to paralysis and death of the test insect.