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Journal of Crop Protection، جلد ۱۰، شماره ۲، صفحات ۲۹۵-۳۰۸
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عنوان انگلیسی Impact of hexythiazox on life table parameters of the Amblyseius swirskii (Acari: Phytoseiidae) and its prey Tetranychus urticae
چکیده انگلیسی مقاله The two-spotted spider mite Tetranychus urticae Koch (Acari: Tetranychidae) is one of the most important and destructive herbivorous mites in farm and greenhouse that has developed high levels of resistance to many acaricides. In this study, we investigated the effect of sublethal concentrations of hexythiazox at LC10, LC20, and LC30 on the development and reproduction parameters of Amblyseius swirskii Athias-Henriot (Acari: Phytoseiidae) and its prey T. urticae. The crude data were analyzed based on age-stage, two-sex life table analysis. Hexythiazox (at LC20 and LC30 levels) reduced the oviposition period (9.68, 8.06 days), total lifespan (22.37, 20.88 days), and total fecundity (50.97, 46.21 eggs/female) compared to the control but did not affect those parameters of A. swirskii. The intrinsic rate of increase (r) and finite rate of increase (λ) were not significantly different at tested concentrations, but the net reproductive rate (R0), gross reproductive rate (GRR), and mean generation time (T) reduced significantly. Our study demonstrated lower toxicity of hexythiazox on A. swirskii compared to its prey. It could be concluded that the use of selective acaricides at lower concentrations may be helpful in integrated pest management programs.
کلیدواژه‌های انگلیسی مقاله Two-spotted spider mite, LC50, life table, biological parameters, Phytoseiidae
نویسندگان مقاله | Mohammadreza Havasi
Department of Plant Protection, Faculty of Agriculture, University of Tehran, Karaj, Iran.


| Niloufar Sangak Sani Bozhgani
Department of Entomology, Faculty of Agriculture, Tarbiat Modares University, Tehran, Iran.


| Gholamreza Golmohmmadi
Agricultural Entomology Department, Iranian Research Institute of Plant Protection, AREEO, Tehran, Iran.


| Katayoon Kheradmand
Department of Entomology and Plant Pathology, College of Aburaihan, University of Tehran, Tehran, Iran.
نشانی اینترنتی http://jcp.modares.ac.ir/browse.php?a_code=A-10-47836-4&slc_lang=en&sid=3
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