Correlation Engine 2.0
Clear Search sequence regions

This study aims to investigate the fate and histopathological effects of ethion on selected organs of the crayfish, Procamabrus clarkii. Crayfish were exposed to 1 mg l(-1) (14)C-ethion and the concentrations of ethion and its possible degradation products were measured in water and different organs of the crayfish over both the exposure and recovery periods. Chromatographic analysis revealed that ethion was degraded into ethion monooxon, ethion dioxon, O,O-diethyl phosphorothioate, O-ethyl phosphorothioate and one unknown compound. At the end of exposure period, ethion was accumulated in different organs of the crayfish especially in the hepatopancreas and gills. Following the transfer of crayfish to clean water for seven days, the concentration of insecticide residues were decreased in both the hepatopancreas and gills suggesting that these organs play an important role in elimination of ethion. On the other hand, the exposure of the crayfish to ¼ 96 h-LC(50) (0.36 mg l(-1)) of ethion caused extensive ultrastructural alterations to both hepatopancreas and gill epithelial cells. In the hepatopancreas, the most notable pathological features included vacuolation, degradation and distinct cell lysis. In the gill epithelium, the histopathological alterations included infiltration of hemocytes, cytoplasmic vacuolation and a decrease in the number of basal plasma membrane infoldings. Copyright © 2012 Elsevier Ltd. All rights reserved.


Mahmoud M A Desouky, Hassan Abdel-Gawad, Bahira Hegazi. Distribution, fate and histopathological effects of ethion insecticide on selected organs of the crayfish, Procambarus clarkii. Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association. 2013 Feb;52:42-52

Expand section icon Mesh Tags

Expand section icon Substances

PMID: 23127602

View Full Text