کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4517298 | 1322535 | 2010 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Time matters: delayed toxicity of pirimiphos-methyl on Tribolium castaneum (Herbst) (Coleoptera: Tenebrionidae) and its effects on efficacy estimation of residual treatments
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم زراعت و اصلاح نباتات
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![عکس صفحه اول مقاله: Time matters: delayed toxicity of pirimiphos-methyl on Tribolium castaneum (Herbst) (Coleoptera: Tenebrionidae) and its effects on efficacy estimation of residual treatments Time matters: delayed toxicity of pirimiphos-methyl on Tribolium castaneum (Herbst) (Coleoptera: Tenebrionidae) and its effects on efficacy estimation of residual treatments](/preview/png/4517298.png)
چکیده انگلیسی
Three time-related toxicity parameters of pirimiphos-methyl were compared using a common pest of stored cereal and grain products, Tribolium castaneum (Herbst). The effective exposure time sufficient to knock-down half of the beetles was much shorter than the median knock-down time from a continuous exposure test (8.6 min and 80 min, respectively, at the same insecticide concentration). The difference between these two measures can be attributed to delayed toxicity of pirimiphos-methyl. Pirimiphos-methyl was effective against T. castaneum at a low application rate of 0.0047 g a.i. mâ2, when beetles were exposed on the treated surface for short time intervals. The median post-exposure knock-down time for animals placed for 20 min on insecticide-treated surface and then kept on an untreated surface was 180 min. Our results suggest that actual effective exposure time might be a more realistic efficacy measure of pirimiphos-methyl at a given dose than LT50 (median lethal time for continuous exposure), and that the timing of the toxic effects should be included more often in residual toxicity testing.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Stored Products Research - Volume 46, Issue 3, July 2010, Pages 161-165
Journal: Journal of Stored Products Research - Volume 46, Issue 3, July 2010, Pages 161-165
نویسندگان
Malgorzata Lagisz, Kirsten Wolff, Gordon Port,