Volume 12, Issue 2 (2023)                   JCP 2023, 12(2): 151-161 | Back to browse issues page

‎ 20.1001.1.22519041.2023.12.2.3.3

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Zahediasl Z, Farshbaf Pour Abad R, Taghizadeh R, Saber M. Changes of phenoloxidase activity in hemocytes of Helicoverpa armigera (Lepidoptera: Noctuidae) exposed to sub-lethal concentrations of insecticides. JCP 2023; 12 (2) :151-161
URL: http://jcp.modares.ac.ir/article-3-66634-en.html
Changes of phenoloxidase activity in hemocytes of Helicoverpa armigera (Lepidoptera: Noctuidae) exposed to sub-lethal concentrations of insecticides
Zahra Zahediasl1 , Reza Farshbaf Pour Abad 2, Roya Taghizadeh3 , Moosa Saber1
1- Department of Plant Protection, Faculty of Agriculture, University of Tabriz, Tabriz, Iran.
2- Department of Plant Protection, Faculty of Agriculture, University of Tabriz, Tabriz, Iran. , rfpourabad@yahoo.com
3- Shahıd Bakeri Higher Educatıon Center, Urmia University, Urmia, Iran.
Abstract:   (784 Views)
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 (LC50 = 1.71 and 3.11 mg ai/liter, respectively). Also, the highest phenol-oxidase activity at 24 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.
Keywords: cotton bollworm, immune system, Phenoloxidase enzyme, sugar beet cultivars
Full-Text [PDF 802 kb]   (464 Downloads)    
Article Type: Original Research | Subject: Insect Physiology
Received: 2023/01/7 | Accepted: 2023/05/16 | Published: 2023/09/20
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