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The objective of this study was aimed to study the influence of five constant temperature degrees (16, 20, 24, 28 and 32
C) on the biological characteristics and life table parameters as well as the developmental threshold and assessment of the thermal days requirements for development (DD´s) for predators, Rodolia cardinalis, Nephus includens and Crysoperla carnea. In addition, the current investigations were designed to provide information for survivalship, the duration of the developmental stages and the ovipositional periods as well as the adult longevity for males and females, fecundity and fecundity rate to serve as a basis for the use of these predators in biological control program.

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Name: Hagar Samir Saleh Awadalla Birth Date: march 7th , 1986 Birth Place: Vienna, Austria Marital Status: Single Nationality: Egyptian Mail: Hagar.vien86@yahoo.com Title: Assistant Researcher, Plant Protection Research Institute A.R.C.

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