Effects of trichlorfon organophosphate on the morphology of the gills and liver of Pseudoplatystoma corruscans

Possible changes in the morphology of the gills and liver of P. corruscans after exposure to TCF were evaluated. The fish were distributed into five groups in triplicate (n = 10 in each group: 0.0; 0.125; 0.25; 0.5; 1.0 mg/L of the commercial product NEGUVON®, for 96 h. TCF induced a high histopatho...

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Published in:Journal of environmental science and health. Part B, Pesticides, food contaminants, and agricultural wastes Pesticides, food contaminants, and agricultural wastes, 2021, Vol.56 (12), p.1057-1065
Main Authors: Oliveira-Lima, Jeffesson de, Santos, Eduardo Libanio Reis, Moron, Sandro Estevan
Format: Article
Language:English
Subjects:
Animals
Aquatic environment
Catfishes
Congestion
Disturbances
Edema
Fish
Gills
Glycoproteins
Histomorphometry
histopathology
Hyperplasia
Lamellae
Liver
Morphology
Necrosis
Neguvon
neutral glycoprotein
Organophosphates
Organophosphorus pesticides
pintado
Trichlorfon
Water Pollutants, Chemical - toxicity
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Summary:Possible changes in the morphology of the gills and liver of P. corruscans after exposure to TCF were evaluated. The fish were distributed into five groups in triplicate (n = 10 in each group: 0.0; 0.125; 0.25; 0.5; 1.0 mg/L of the commercial product NEGUVON®, for 96 h. TCF induced a high histopathological index associated with circulatory disorders (congestion and aneurysm), as well as progressive changes (lamellar hyperplasia, capillary dilation, epithelial detachment and edema) at the highest concentrations (0.25; 0.5 and 1.0 mg/L). In addition to the histopathological disturbances, there was an increase in the levels of neutral glycoproteins and alterations in the histomorphometry of the secondary lamellae (total height, apical region, median, basal and interlamellar) at the highest concentrations. In the liver, the alterations were more intensified, in addition to circulatory (congestion) and regressive disturbances (loss of hepatocyte architecture and accumulation of intracellular substances), progressive alterations (focal necrosis) were observed, indicating a high degree of hepatic tissue involvement. The results indicate that the use of TCF concentrations above 0.25 mg/L promotes histopathological, histomorphometric and histochemical changes in the gills and liver of P. corruscans, imposing a biological risk that affects the aquatic environment and the health of fish.
ISSN:0360-1234
1532-4109
DOI:10.1080/03601234.2021.2011555