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- Title
Effect of fenitrothion on Spodoptera exigua larval development and ultrastructure of follicle cells.
- Authors
Adamski, Zbigniew; Korolczuk, Daria; Purgiel, Magdalena; Grewling, Anna; Ratajczak, Marlena; Bankiet, Michał; Ziemnicki, Kazimierz
- Abstract
The effect of four sublethal concentrations (from 0.01165 to 0.3025 µg per insect, responding to LC10/10, LC10, LC30 and LC50) of the organophosphorus insecticide, fenitrothion, on Spodoptera exigua (Lepidoptera, Noctuidae) larval development and ultrastructure of follicular cells of adult female moths was tested. The most prominent malformations were: breaks in the cuticle, increased mortality during larval/pupal molting, alterations of nuclear envelope, changed heterochromatin pattern and abnormalities in mitochondrial ultrastructure. Some of the alterations are dose-dependent, but the other ones, like organization of rough endoplasmic reticulum (RER), show non-linear response: cells exposed to lower concentrations (LC10/10 and LC10) of the insecticide possessed clusters of accumulated RER, which were absent within the cells exposed to higher ones (LC30 and LC50). Formation of the eggshell was also markedly postponed within the groups exposed to lower doses. These findings prove that even minute amounts of xenobiotics may cause significant changes within exposed populations.
- Publication
Biologia, 2009, Vol 64, Issue 1, p197
- ISSN
0006-3088
- Publication type
Article
- DOI
10.2478/s11756-009-0022-x