Histological Changes Induced in the Mucus Glands of Brown Garden Snail Eobania vermiculata Treated With Malathion and Methomyl Pesticides.

• Maha. M. Fouad
• Plant Protection Research Institute, ARC, Dokki, Giza, Egypt.
• The Third International Conference onIPM Role in Integrated Crop management and Impacts on Environment and Agricultural Products. 26-29 November 2005, Giza, Egypt.

Abstract

The present study aimed to illustrate the histological effects of malathion and methomyl compounds on the mucous gland and the body wall of the land snail E . vermiculata at 0.5% level after 24 hours post-treatment. Mucus gland :- Tufted tubular and collection of mucous gland branches were formed by the effect of 0.5% malathion in mucous gland of E. vermiculata after 24 hours post treatment , at the same time , the quantity of mucous secreted was reduced and increased in volume of mucous cells. Also, effects of methomyl in mucous gland are cohesion of the branches of the mucous gland wide led to the desiccation of land snail and its death, and increase in the mucous cell volume with some change in the colour and it had been lonely and had no combination with each other. The body wall: - Histological effects of malathion on body wall of E. vermiculata led to presence of a large vacuoles spreading on the surface of skin wide, reducing the quantity of mucous secretion, while 0.5% methomyl showed no vacuoles on the skin surface wide .