Side effects of IGR cyromazine on nasonia vitripennis [hymenoptera: pteromalidae] a parasitic wasp of house fly pupae

Combination of cyromazine as an Insect Growth Regulator [IGR] and Nasonia vitripennis [Hymenoptera: Pteromalidae] a parasitic wasp may be an effective tool for reducing the house-fly populations in poultry houses and livestock farms. This study was conducted to assess the side effects of the IGR cyromazine on the level of parasitism and numbers and the longevity of emerged N. vitripennis parasitoids from house fly pupae. Cyromazine treated cloth target was used as the contaminating method of the parasitoids which was applied in this research study. The Weibull distribution showed that there was no significant difference among controls and cyromazine treated targets for longevity data. There was no significant effect of cyromazine on the level of parasitism of N. vitripennis using ?2 test. One-way ANOVA showed that the actual numbers emerging were significantly higher in the control than in two cyromazine treatments; however, it is a useful phenomenon because of reducing the hyperparasitism. There is a good consistency between using N. vitripennis and 1.1% or 0.9% cyromazine treated targets. Therefore cyromazine treated targets can be applied as a safe delivery vehicle for applying the cyromazine IGR in the poultry houses and livestock farms in an Integrated Pest Management [IPM] program

effects of oral application of cyromazine and triflumuron on house-fly larvae

Accumulations of large quantities of wastes [manure, used litter, dead birds] which are excellent medium for fly-larvae over poultry houses provide breeding places for different groups of fly pests, with house-flies being the dominant species. This project is a comparative lab study. In this research project the larvicidal effects of cyromazine and triflumuron were studied as two Insect Growth Regulators [IGRs] to reduce the fly population using oral application. Both IGRs had a significant effect on larval mortality compared with their controls among the concentrations [P< 0.01, Fisher's LSD with Bonfferoni correction] including a dose-dependent relationship. Comparisons among LC[50] and LC[90] values, using fiducial limits, showed that cyromazine was significantly more toxic to the larvae of the two strains than triflumuron. It is concluded that cyromazine should be used in a larvicidal programme to control house-fly rather than triflumuron