Systematic and Applied Acarology (2020) 25, 906-917

Marzieh Alinejad, Katayoon Kheradmand and Yaghoub Fathipour (2020)
Demographic analysis of sublethal effects of propargite on Amblyseius swirskii (Acari: Phytoseiidae): Advantages of using age-stage, two sex life table in ecotoxicological studies
Systematic and Applied Acarology 25 (5), 906-917
Abstract: Knowledge of the impact of acaricides on predatory mites is crucial for integrated pest management (IPM) programs. The sublethal effect of propargite was assessed against the subsequent generation of treated Amblyseius swirskii Athias-Henriot (Acari: Phytoseiidae) fed on Tetranychus urticae Koch (Acari: Tetranychidae) under laboratory conditions [26 ± 1 °C, 70 ± 3 % RH and 16:8 (L:D) h]. A leaf disc bioassay was employed to assess the sublethal concentrations (LC₁₀, LC₂₀, and LC₃₀) of propargite (Omite® 57% EC, MAHAN, Iran) on A. swirskii. The results revealed that sublethal concentrations of propargite significantly affected the total life span and longevity of the treated females of A. swirskii. Reproductive and total fecundity of the subsequent generation were also affected by sublethal concentrations. All concentrations caused a significant reduction in oviposition days, compared to the control. The intrinsic rates of increase (r) of A. swirskii treated with sublethal concentrations of propargite and distilled water were 0.126, 0.122, 0.115, and 0.129 d^-1, respectively. Our findings revealed that propargite had no significant effect on life table parameters of treated mites in comparison to the control. Sublethal effects of propargite and its impact on A. swirskii are discussed.
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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 to pesticides

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Pest and/or beneficial records:

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