Changes of phenoloxidase activity in hemocytes of Helicoverpa armigera (Lepidoptera: Noctuidae) exposed to sub-lethal concentrations of insecticides
Publish place: Journal of Crop Protection، Vol: 12، Issue: 2
Publish Year: 1402
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_JCP-12-2_003
تاریخ نمایه سازی: 13 آبان 1402
Abstract:
The cotton bollworm, Helicoverpa armigera (Hübner), is one of the most important pests of crops. Like other insects, this insect has an immune system against external threats such as various diseases, parasitoids, and chemical compounds. Phenoloxidase is a key factor in the immunity of insects and other arthropods. The present study investigated the lethal effects of four insecticides, indoxacarb, profenofos, chlorfluazuron, and hexaflumuron, and their effects on phenolic oxidase activity in cotton bollworm. Among the studied insecticides, in two bioassays (mixture of insecticide with artificial food and immersion of sugar beet leaves), Chlorfluazuron had the highest toxicity (LC۵۰ = ۱.۷۱ and ۳.۱۱ mg ai/liter, respectively). Also, the highest phenol-oxidase activity at ۲۴ h was for larvae treated with chlorfluazuron and hexaflumuron. Also, when treated with chlorfluazuron and hexaflumuron, the larvae fed on an artificial diet had higher phenoloxidase activity than those fed on sugar beet cultivars.
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Authors
Zahra Zahediasl
Department of Plant Protection, Faculty of Agriculture, University of Tabriz, Tabriz, Iran.
Reza Farshbaf Pour Abad
Department of Plant Protection, Faculty of Agriculture, University of Tabriz, Tabriz, Iran.
Roya Taghizadeh
Shahıd Bakeri Higher Educatıon Center, Urmia University, Urmia, Iran.
Moosa Saber
Department of Plant Protection, Faculty of Agriculture, University of Tabriz, Tabriz, Iran.
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