Effect of some Plant Extracts and the Insecticide Nomolt on the Ovary of Musca domestica L.

The principal aim of the study was to detect the effect of sublethal concentrations of 4 alcoholic plant extracts in addition to an insecticide known as nomolt on the growth and developmnt of ovaries and their follicles in females of the house fly, Musca domestica L. obtained from the treatment of the second larval instars with these extracts . The plant extracts included the leaves extract of Prosopi farcta, Datura stramoniun and Capparis spinosa, in concentrations 10,20,30 ppm and the fruit extract of Melia azedarach in concentrations 1,2,3 ppm, however the concentrations of nomolt were 0.025, 0.05 and 0.1ppm. The effect of these concentrations has being studied on the length and width of the ovaries and their primary follicles along a period including four stages of the adult life.24, 48, 72, 96 hours after emergence. The results of this study have clearly shown that some of the concentrations of the alcoholic plant extracts and of nomolt have had a highly significant inhibitory effect on the growth and development of the ovaries and their follicles. They have sometimes shown a complete growth and / or vitellogenic inhibitory effect, or have interrupted the process of vitellogenesis, or have decreased the numbers of ovarioles, or have caused their and degradation disintegration and follicle degeneration.