الفهرس 
Contents
The Peach Fruit Fly (PFF), Bactrocera zonataOnly 14 pages are availabe for public view
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Abstract
In Egypt, citrus is the most important fruit as far as its acreage, production and exportation potentials are concerned. The citrus flower moth, CFM (Prays citri), the peach fruit fly, PFF (Bactrocera zonata) and the Mediterranean fruit fly (Ceratitis capitata) are of the most important pests attacking several citrus species in Egypt. These pests cause great reduction in quantity and quality of the yield; however they attacking flowers and fruits. The present study was conducted at El-Tharir district, El-Beheira governorate, throughout two successive years (2014/15 and 2015/16). The seasonal activity of Prays citri, Ceratitis capitata and Bactrocera zonata was evaluated under field conditions. In addition to some biological aspects of Prays citri were estimated under laboratory conditions. The obtained results was the host plant species had an effective role on the flower moth population. Co-existence has been observed between B. zonata and C. Capitata populations. Both C. capitata and B. zonata exhibited different preference to the tested citrus orchards. B. zonata population showed negative responses to the increase of wind speed. Analysis of the life table of P. citri population indicated that mortality of larval stage is the Key-stage mortality, which can induce population changes in comparison with other specific stage mortalities. Acetone proved to be the best solvent for sex pheromone extraction of P. citri females. Jackson traps baited with acetone extracts yielded good indicator for catching P. citri males under field conditions, and proved to be a good tool for monitoring population.