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Abstract
The present study focuses on four factors affecting the mass production of
Orius albidipennis (Reuter). The investigated parameters were: I-four degrees of
temperature (22,26,30 and34°C). 2-different kinds of preys (Anagasta kuehniella
eggs, Gyniakothrips ficorum nymphs, Tetranychus urticae eggs and Trialeurodes
vaporariorum eggs). 3-four types of shelters (white foam balls, small rolled
cartoon, vermiculate and rice hull). 4-four ovipositional substrates (bean pods,
geranium leaves, sweet pepper seedling and corn ear silk). The results showed that:
I-The optimum temperature for rearing either immature stages or adult stage
(o&~) was 26’C. 2-The most suitable prey either for rearing nymphal stage or
females fecundity was A. kuehniella eggs. 3-The highest survival rate of nymphs
was recorded when white foam balls was used as shelter. 4-The best oviposition
substrate for either eggs deposition or the hatchability was bean pods. Also, the I
greatest number of consumed A. kuehniella eggs was recorded at 26’C for either
nymphal or adult stage (O’&~). The greatest feeding consumption rate was recorded
when individuals of 0. albidipennis fed on T urticae eggs for either nymphal or
, adult stage (o&~). Finally, the effectiveness of 0. albidipennis was evaluated I against Phthorimaea operculella in stores during (2002-2003). The data obtained
i showed that the best treatment in controlling P. operculella was Agrin (bio-
I pesticide) plus 0. albidipennis at the same time in the two seasons.