Impact of pyriproxyfen and methoxyfenozide on hemocytes of the Mediterranean flour moth, Ephestia kuehniella (Lepidoptera: Pyralidae)
محل انتشار: Journal of Crop Protection، دوره: 3، شماره: 4
سال انتشار: 1393
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 63
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شناسه ملی سند علمی:
JR_JCP-3-4_004
تاریخ نمایه سازی: 13 آبان 1402
چکیده مقاله:
The Mediterranean flour moth, Ephestia kuehniella Zeller, is one of the major pests in stored products worldwide. Several problems assossiated with the use of conventional insecticides have strongly demonstrated the need for applying alternative safe compounds such as insect growth regulators (IGRs). In the present study, growth regulating activity and hematological effects of pyriproxifen and methoxyfenozide were evaluated on E. kuehniella larvae. Effects of the insecticides were evaluated under laboratory conditions set at ۲۶ ± ۱ °C and ۷۵% RH. Findings indicated that inhibition dose for fifty percent of population (ID۵۰) was equal to ۰.۱۶ µg/mg larvae for pyriproxifen and ۰.۴ µg/mg larvae for methoxyfenozide, showing the considerable growth regulating effect on two-day-old fifth instar larvae. Then, influence of estimated doses were investigated on the insect hemocytes including total hemocyte count (THC) and differential hemocyte count (DHC). THC and the proportion of plasmatocytes were decreased as pyriproxifen doses increased, while, the granulocytes level was increased. In contrast, application of sublethal doses of methoxyfenozide caused a conciderable increase in THC and the plasmatocytes density, while, number of granulocytes was decreased. Since the total number of hemocytes and the proportion of plasmatocytes are very crucial in immune responses of insects, pyriproxifen could be used as an immunosuppressive pesticide in integrated control of E. kuehniella.
کلیدواژه ها:
نویسندگان
Vahid Ghasemi
Department of Entomology, Faculty of Agriculture, Tarbiat Modares University, Tehran, Iran.
Saeid Moharramipour
Department of Entomology, Faculty of Agriculture, Tarbiat Modares University, Tehran, Iran.
Jalal Jalali Sendi
Department of Plant Protection, Faculty of Agricultural Sciences, University of Guilan, Rasht, Iran.
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