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Environmental management and biological aspects of two eriophyoid fig mites in Egypt: Aceria ficus and Rhyncaphytoptus ficifoliae

Abou-Awad, B.A. ; El-Sawaf, B.M. ; Reda, A.S. and Abdel-Khalek, A.A.

1999 - Volume: 40 Issue: 4 pages: 419-429


ecology biology control fig orchard mites phytophagous Acari predacious Acari


Mites from abandonned fig trees in Egypt were observed for 2 yeras, during which species diversity, seasonal fluctuations and biological aspects of common eriophyoid speceies were studied. THree phytophagous species - the fig bud mite Aceria ficus (Cotte), the fig leaf mite Rhyncaphytoptus ficifoliae Keifer and the two-spotted spider mite Tetranychus urticae Koch representing a basic trophic level - were fed upon by three predacious mites - Pronrmatus ubiquitus (McGregor), Amblyseius swirskii Athias-Henriot and Agistemus exsertus Gonzalez. Population abundance of the injurious mites were affected by climatic conditions, predation by leaf age. A control measure of one summer pesticide (abamectin) application seemed to be the most successful management of the harmful mites. Life table parameter showed that the population of A. ficus multiplied 28.52 times in a generation time of 17.90 days, while the R. ficifoliea population increased 16.50 times in a generation time of 14.61 dyas. Field and laboratory studies indicated that the viviparity is a typical character in the reproduction of R. ficifoliae.

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1999 Abou-Awad, B.A.; El-Sawaf, B.M.; Reda, A.S. and Abdel-Khalek, A.A.
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