Systematic and Applied Acarology (2021) 26, 1856-1866

A.Y. M El-Laithy, M. Elseedy and Hoda E. Hussein (2021)
Efficacy of the predatory mite Cydnoseius negevi (Swirskii and Amitai) (Acari: phytoseiidae) as a shared predator for sucking pests on sweet pepper in a net house in Egypt
Systematic and Applied Acarology 26 (10), 1856-1866
Abstract: A field experiment was carried out to evaluate the efficacy of the native predatory mite Cydnoseius negevi (Swirski and Amitai) (=Typlodromus negevi) as a biological control agent for Bemisia tabaci (Gennadius) complex, Onion thrips Thrips tapaci (Lindeman) and Tetranychus urticae (Koch). The efficacy of Phytoseiulus persimilis (Athias-Henriot) against these pests was also evaluated. The data obtained revealed reduction in population density of the above-mentioned pests in the experimental plots for P. persimilis and C. negivi compared to the control plot. Mean population density of each of the pests ranging from 32.2–0.5, 284.4–2.0 and 441.8–2.0 individuals / leaf for T. urticae, in the three plots respectively. The mean values of B. tabaci fluctuated between 41.1–2.1, 16.2–1.0 and 57.3–3.6. individuals / leaf and T. tabaci between 20.1–2.6, 13.7–1.4 and 24.9–1.9 individuals / leaf respectively. A slight non-consumptive negative effect is shown by P. persimilis against the pests B. tabaci and T. tabaci. This preliminary experiment hopefully will enhance the role of the native predator C. negevi to play a role in bio-control and its mass augmentation.
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Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
general biology - morphology - evolution

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Tetranychus urticae		Egypt
	Thrips tabaci		Egypt
Phytoseiulus persimilis (predator)	Tetranychus urticae		Egypt
Phytoseiulus persimilis (predator)	Thrips tabaci		Egypt
Cydnoseius negevi (predator)	Tetranychus urticae		Egypt
Cydnoseius negevi (predator)	Thrips tabaci		Egypt