Sublethal Effects of Commonly Used Insecticides in Tomato Crop on Functional Response and Biological Parameters of Macrolophus pygmaeus Rumber (Hemiptera: Miridae)
محل انتشار: مجله علوم و فناوری کشاورزی، دوره: 23، شماره: 3
سال انتشار: 1400
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 80
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شناسه ملی سند علمی:
JR_JASTMO-23-3_008
تاریخ نمایه سازی: 23 آبان 1402
چکیده مقاله:
The hemipteran, Macrolophus pygmaeus Rumber, is an effective biocontrol agent against many crop pests including tomato leaf miner, Tuta absoluta Meyrick. Sublethal effects of azadirachtin (Neem Azal®), indoxacarb (Avaunt®), and emamectin benzoate+lufenuron (Proclim Fit®) were studied on biological characteristics and functional response of the predatory bug in laboratory conditions at ۲۵±۱°C, ۶ ±۵% RH, and a photoperiod of ۱۶:۸ hour (L:D). For this purpose, females of the predatory bug were exposed to sublethal residues (۱۰% of field concentration) of the insecticides. Two-sex life table and Roger's model were used to investigate effects of the insecticides on biological parameters and functional response of the predator, respectively. Results indicated that sublethal residues of indoxacarb and azadirachtin had the highest and lowest side effects on life table parameters of M. pygmaeus. Whereas azadirachtin has no significant effects on the bug biological parameters, total fecundity and longevity of the bug in indoxacarb treatment were significantly lower (۱۴.۶%) and higher (۶.۹%) than the control. The predator showed type III functional response. The type of functional response was not affected by the insecticide residues. However, the coefficient of attack rate (b) for the indoxacarb treatment (۰.۱۵۲۱) was significantly lower than for other treatments. However, there was no significant difference between the handling Times (Th) of the treatments. In conclusion, the experiments proved that azadirachtin is a low risk insecticide to M. pygmaeus, which can be integrated with biological control by the predator.
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نویسندگان
Y. Safari-Monjezi
Department of Plant Protection, Faculty of Agriculture, Agricultural Sciences and Natural Resources University of Khuzestan, Mollasani, Ahvaz, Islamic Republic of Iran.
F. Yarahmadi
Department of Plant Protection, Faculty of Agriculture, Agricultural Sciences and Natural Resources University of Khuzestan, Mollasani, Ahvaz, Islamic Republic of Iran.
N. Zandi-Sohani
Department of Plant Protection, Faculty of Agriculture, Agricultural Sciences and Natural Resources University of Khuzestan, Mollasani, Ahvaz, Islamic Republic of Iran.
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