The effect of some insecticides on fat bodies of house fly Musca domestica L

الملخص EN

This study was conducted at Zoology Research Laboratory, Department of Biology, College of Science, University of Sulaimania to investigate the oral effect of toxicity thiamethoxam, deltaethrin and lambda-cyjalothrin in different concentration on the biological aspects and visceral fat body cells of house fly Musca domestica L.

in laboratory.

First generation of adult house flies tested in this work was the progeny of flies obtained during the summer.

The highest mortality among treated house flies was (96.66 %) that occurred by 3.12 thiamethoxam after 24 hour from administration, followed by (90.00 %) 60 ppm lambda- cyjalothrin, (83.33 %) 300 ppm of malathion and by deltamthrin.

There were significant differences between control and each treatment.

The results indicated that the structure of fat bodies was changed due to the effect of various concentrations, the low concentrations of each insecticides caused the occurrence of vacuolations and cytoplasmic granulations as the first sign of poisoning, the medium doses causes the cell exhibited different stages of inclusion deformation, degeneration, necrosis and finally the cell lost its integrity while, high doses caused a series damage to fat cells which finally exploded.