Effect of some insecticides on cellular lipids of the neurosecretory complex of the red cotton bug,Dysdercus koenigii

Summary In normal specimens of the bug,Dysdercus koenigii, the cells of the pars intercerebralis stain highly positively with Sudan black B and acid haematein, while the corpora cardiaca and allata stain lightly. After the administration of parathion, carbamate and endrin the situation is reversed. The increased level of lipids in the corpora cardiaca and allata coincides with the degree of loss of lipids from the cells of the pars intercerebralis.The authors are thankful to Professor G.P. Sharma for the encouragement and to Dr H. S. Vasisht, for providing them the laboratory facilities. Financial assistance provided to Dr Suman Taneja by C.S.I.R., New Delhi is gratefully acknowledged.