09 فروردین 1403
فريبا سهرابي

فریبا سهرابی

مرتبه علمی: دانشیار
نشانی: دانشکده مهندسی کشاورزی - گروه گیاه پزشکی
تحصیلات: دکترای تخصصی / گیاهپزشکی
تلفن: 09173708661
دانشکده: دانشکده مهندسی کشاورزی

مشخصات پژوهش

عنوان Lethal and sublethal effects of buprofezin and imidacloprid on Bemisia tabaci (Hemiptera: Aleyrodidae)
نوع پژوهش مقالات در نشریات
کلیدواژه‌ها
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مجله CROP PROTECTION
شناسه DOI
پژوهشگران فریبا سهرابی (نفر اول) ، پرویز شیشه بر (نفر دوم) ، موسی صابر (نفر سوم) ، محمدسعید مصدق (نفر چهارم)

چکیده

The sweetpotato whitefly, Bemisia tabaci (Gennadius), has become a major threat to agriculture worldwide. The development of insecticide resistance in B. tabaci has necessitated the exploration of new management tactics. The toxicity of imidacloprid and buprofezin to various life stages of B. tabaci was determined in the laboratory. Also, the sublethal effects of both insecticides were studied on demographic and biological parameters of B. tabaci. Both insecticides were very toxic against first stage larvae of the pest with LC50 values of 1.0 and 19.3 ppm for buprofezin and imidacloprid, respectively. Toxicities decreased between successive stages (LC50 values ranging from 1.0 to 2854.0 ppm). The LC50 values of imidacloprid for adult males, females and eggs were 11.8, 71.6 and 151.0 ppm, respectively. Buprofezin had no significant effect on adults and eggs. The sublethal concentration of imidacloprid had no significant effect on demographic and biological parameters of B. tabaci but the maximal value for the mean generation time (T) (18.8 day) was observed in imidacloprid treatment. Buprofezin significantly decreased stable population and biological parameters of B. tabaci except it did not decrease the rate of population increase or the sex ratio of offspring.