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Asian Journal of Biological Sciences

Year: 2010 | Volume: 3 | Issue: 2 | Page No.: 77-84
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Authors

Kholoud A. Al-Shammery

Keywords

Research Article

Different Biological Aspects of the Predaceous Mite Euseius scutalis (Acari: Gamasida: Phytoseiidae) and the Effects due to Feeding on Three Tetranychid Mite Species in Hail, Saudi Arabia

Kholoud A. Al-Shammery
The phytoseiid predatory mite Euseius scutalis (Athias-Henriot) was observed feeding on different phytophagous mites, scale insects and whiteflies in Hail region, Saudi Arabia. It was reared for the whole life span on immature stages (larvae and nymphs) of the tetranychid mites Tetranychus urticae Koch; Oligonychus afrasiaticus McGregor and Eutetranychus orientalis Klein in the laboratory. Development of E. scutalis was not significantly affected by prey species but immature stages of T. urticae shortened the development of the predatory mite. Adult longevity was shorter when female mite fed on O. afrasiaticus while T. urticae significantly prolonged longevity time and caused the highest rate of egg production. Feeding on T. urticae immature stages, predatory mite has better life table parameters in comparison with the other prey mites. Mean generation time (T) averaged 14.88, 14.70 and 16.14 days; net reproductive rate (Ro) averaged 26.737, 13.248 and 13.606; intrinsic rate of natural increase (rm) was 0.22, 0.175 and 0.161; finite rate of increase erm(λ) averaged 1.247, 1.192 and 1.175 when mite fed immature stages of T. urticae, E. orientalis and O. afrasiaticus, respectively. Euseius scutalis is considered a promising biological control agent against phytophagous mites, scale insects and whiteflies in Hail, Saudi Arabia.
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Kholoud A. Al-Shammery, 2010. Different Biological Aspects of the Predaceous Mite Euseius scutalis (Acari: Gamasida: Phytoseiidae) and the Effects due to Feeding on Three Tetranychid Mite Species in Hail, Saudi Arabia. Asian Journal of Biological Sciences, 3: 77-84.

URL: https://scialert.net/abstract/?doi=ajbs.2010.77.84

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