Abstract
The influence of four eriophyid mite species as prey, Aceria dioscoridis, Aceria olivi, Aculops lycopersici and Cisaberoptus kenyae, on the biology and demographic parameters of the predatory mite Proprioseiopsis badri, was studied under laboratory conditions. Feeding on A. dioscoridis and A. olivi enhanced the development of P. badri, resulted in the longest mean generation time and were the most suitable foods for the oviposition of the predator, as exhibited by the highest fecundity, net reproductive rate and gross reproductive rate. Preying on A. lycopersici gave the lowest fecundity, net and gross reproductive rates and finite rate of increase; therefore, this prey was the least suitable for the oviposition of P. badri. Preying on A. dioscoridis and A. olivi produced higher intrinsic rates of increase, reproduction rates and finite rates of increase for the predator in comparison with A. lycopersici and C. kenyae, which had the lowest value. These differences in response to various eriophyid pests should be considered for the production of healthy cultures of P. badri.
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