Insecticide induced alterations in the mid gut of Red Cotton Stainer, Dysdercus koenigii (Fabricius) (Hemiptera: Pyrrhocoridae) treated with Deltamethrin
Mohd Faizan, Mohammad Amir, Ritika Gupta, Shagufta Yasmeen
Dysdercus koenigii, the Red Cotton Stainer is a well-known destructive pest of cotton and also act as mechanical vector in transmitting fungus, Nematospora gossypii that cause internal boll disease of cotton. Deltamethrin, in the concentrations 0.0001% and 0.0005% were provided in feed of adult red cotton bugs to observe alteration in the mid gut after 24 hours. Mid gut is lined with enteric epithelium which rest upon a basement membrane and is covered by inner circular and outer longitudinal muscles. Inner cavity is filled with lumen. Histopathological studies on mid gut resulted in degradation of basement membrane and degeneration in the epithelial lining in both concentrations (0.0001% and 0.0005%). Higher dose caused more disruption in longitudinal and circular muscles as compared to lower dose. In lower concentration, slight constrictions were observed in lumen while at higher concentration, shrinkage became more pronounced.
Mohd Faizan, Mohammad Amir, Ritika Gupta, Shagufta Yasmeen. Insecticide induced alterations in the mid gut of Red Cotton Stainer, Dysdercus koenigii (Fabricius) (Hemiptera: Pyrrhocoridae) treated with Deltamethrin. International Journal of Entomology Research, Volume 4, Issue 4, 2019, Pages 01-04