Light Microscopy Observation of the Gills of Post Juvenile Africa Cat Fish (C. gariepinus) Exposed to Sub-lethal Concentrations of Glyphosate Herbicide (IPA 360g/L)

Abstract

The histopathological studies of the sectioned gills of post Juvenile Africa catfish C. gariepinus exposed to sub- lethal concentrations of glyphosate based formulation (Isopropylamine salt 360 mg/L) were observed for 28 days. Epithelial lifting, hyperplasia and hypertrophy of the epithelial cells with partial fusion of lamellae were associated with various concentrations of glyphosate. Severity of alteration was both time and concentration dependent. All the fishes held in the control tanks showed no histological alterations. The observed changes in the gills under light microscopy showed that the use of histopathological techniques will allow investigators to examine specific target organs and cells as they are affected by exposure to environmental chemicals like herbicide. Investigating
histopathological alteration offers a means of detecting acute and chronic harmful effects of exposure in the tissues and organs of individual animals.