Experimental and Applied Acarology (2014) 64, 361-373

Marzieh Alinejad, Katayoon Kheradmand and Yaghoub Fathipour (2014)
Sublethal effects of fenazaquin on life table parameters of the predatory mite Amblyseius swirskii (Acari: Phytoseiidae)
Experimental and Applied Acarology 64 (3), 361-373
Abstract: Knowledge of the impact of acaricides on predatory mites is crucial for integrated pest management programs. The present study evaluated the sublethal effect of fenazaquin (Pride® 20 % SC, Behavar, Iran) on life table parameters of the subsequent generation of the predatory mite, Amblyseius swirskii Athias-Henriot (Acari: Phytoseiidae), fed on Tetranychus urticae Koch under laboratory conditions [26 ± 1 °C, 70 ± 3 % RH and 16:8 (L:D) h]. The sublethal concentrations including LC10, LC20 and LC30 were determined using a dose–effect assay. The total development time of both sexes enhanced with an increase in concentration. The oviposition period and total fecundity decreased in dose-dependent manner. The intrinsic rate of increase (r) and finite rate of increase (lambda) significantly descended with concentration enhancing from LC10 to LC30, compared with the control. The net reproductive rate (R₀) ranged between 2.76 and 7.37 offspring. Overall, the results indicated that fenazaquin had negative effects on development and life table parameters of the subsequent generation of A. swirskii. In conclusion, fenazaquin is not a compatible acaricide with A. swirskii and should not be used with this predatory mite in integrated management of T. urticae.
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Link to article at publishers website
Database assignments for author(s): Katayoon Kheradmand, Yaghoub Fathipour

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
resistance/tolerance/defence of host

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Tetranychus urticae		Iran
Amblyseius swirskii (predator)	Tetranychus urticae		Iran