
ASSESSING THE IMPACT OF MONOCROTOPHOS ON THE GILL ULTRASTRUCTURE OF OREOCHROMIS MOSSAMBICUS: A FRESHWATER FISH INVESTIGATION
JAGADEESH SUCITHA , PG & RESEARCH DEPARTMENT OF ZOOLOGY, KHADIR MOHIDEEN COLLEGE, ADIRAMPATTINAM, TAMIL NADU, INDIAAbstract
This study investigates the impact of monocrotophos, a widely used organophosphate pesticide, on the gill ultrastructure of Oreochromis mossambicus, a common freshwater fish species. Monocrotophos is known for its potential ecological risks and toxicity to aquatic organisms. Oreochromis mossambicus specimens were exposed to sublethal concentrations of monocrotophos in controlled laboratory conditions. Gill tissue samples were collected and subjected to ultrastructural analysis using transmission electron microscopy (TEM). The results reveal significant alterations in the gill morphology, including damage to the gill filaments, disruption of the respiratory epithelium, and changes in the structural integrity of gill lamellae. These findings provide critical insights into the sublethal effects of monocrotophos on the respiratory system of freshwater fish and have implications for aquatic ecosystem health and pesticide management.
Keywords
Monocrotophos, Oreochromis mossambicus, Gill ultrastructure, Freshwater fish, Organophosphate pesticide, Ecological risks; Aquatic toxicity
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