Cellular defense responses of 5 th instar larvae of the Apple Ermine Moth, Yponomeuta malinellus (Lepidoptera: Yponomeutidae) against starvation, thermal stresses and entomopathogenic bacteria Bacillus thuringiensis

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AJAM HASANI M.; MAHMOUDZADEH M.

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Journal: Journal of Animal Research Year:2020 | Volume:33 | Issue:1 Page(s): 0-0

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Title

Cellular defense responses of 5 th instar larvae of the Apple Ermine Moth, Yponomeuta malinellus (Lepidoptera: Yponomeutidae) against starvation, thermal stresses and entomopathogenic bacteria Bacillus thuringiensis

Author(s)

AJAM HASANI M. | MAHMOUDZADEH M. | Issue Writer Certificate

Keywords

Yponomeuta malinellusQ1

Response of hemocytesQ1

Feeding and tempratureQ1

Bacillus thuringiensisQ1

Abstract

The role of hemocytes and the phenoloxidase system is well established in insect cell defense. The number of hemocytes could be affected by some sort of tension against insects or entry of any foreign agent to hemolymph. Insects with a strong immune system can sometimes alter the pathogenicity of a pathogenic agent or could even make them ineffective. In the current research, effect of tensions like starvation and thermal as well as the efficacy of entomopathogenic bacteria Bacillus thuringiensis were considered on cell defense of fifth instar larvae of the apple ermine moth, Yponomeuta malinellus Zeller. Starvation experiments incited a significant difference in total hemocyte counts, prohemocytes, granulocytes, plasmatocytes, and oenocytoids of 48 hours starved. Larve. The phenoloxidase activity was also significantly reduced 24 and 48 hours post starvation. Starvation showed an increasing trend. The effect of different thermal stresses on total number of cells was quite significant. The total number of hemocytes, granulocytes, plasmatocytes and oenocytoids in larvae which were exposed to 35 ° C for 24 hours, significantly increased compared to the control and 4 ° C, significantly reduced total number of hemocytes, granulocytes and plasmatocytes. In addition, thermal stresses reduced the phenoloxidase enzyme activity. Feeding on B. thuringiensis infested leaves significantly increased total number of hemocytes and phenoloxidase enzyme activity. These factors decreased significantly over time for up to 24 hours indicating a positive reaction of the blood cells against the foreign agent during the initial hours of entering the hemolymph. These results can be considered as a starting point for recognition of physiological defense characteristics in apple ermine moth and to be considered in microbial control programs.

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APA: Copy

AJAM HASANI, M., & MAHMOUDZADEH, M.. (2020). Cellular defense responses of 5 th instar larvae of the Apple Ermine Moth, Yponomeuta malinellus (Lepidoptera: Yponomeutidae) against starvation, thermal stresses and entomopathogenic bacteria Bacillus thuringiensis. JOURNAL OF ANIMAL RESEARCH (IRANIAN JOURNAL OF BIOLOGY), 33(1 ), 0-0. SID. https://sid.ir/paper/381433/en

Vancouver: Copy

AJAM HASANI M., MAHMOUDZADEH M.. Cellular defense responses of 5 th instar larvae of the Apple Ermine Moth, Yponomeuta malinellus (Lepidoptera: Yponomeutidae) against starvation, thermal stresses and entomopathogenic bacteria Bacillus thuringiensis. JOURNAL OF ANIMAL RESEARCH (IRANIAN JOURNAL OF BIOLOGY)[Internet]. 2020;33(1 ):0-0. Available from: https://sid.ir/paper/381433/en

IEEE: Copy

M. AJAM HASANI, and M. MAHMOUDZADEH, “Cellular defense responses of 5 th instar larvae of the Apple Ermine Moth, Yponomeuta malinellus (Lepidoptera: Yponomeutidae) against starvation, thermal stresses and entomopathogenic bacteria Bacillus thuringiensis,” JOURNAL OF ANIMAL RESEARCH (IRANIAN JOURNAL OF BIOLOGY), vol. 33, no. 1 , pp. 0–0, 2020, [Online]. Available: https://sid.ir/paper/381433/en

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