01 Oca 2026 Perşembe
Histopathological effects in gills and hepatopancreas of freshwater bivalve, Lamellidens consobrinus exposed to profenofos
Abstract : Pesticides are widely used in agricultural pests management. The pesticides used in agriculture fields also enters the aquatic system and affect non target freshwater animals like bivalves. profenofos is one of the organophosphate pesticides which has been in agricultural use for controlling pests. This pesticide appears harmful to the freshwater bivalve Lamellidens consobrinus. Pesticide enters in the body of bivalve mainly through gills and affects its tissues. The present study was carried out to assess the histopathological impact of profenofos in the gills and hepatopancreas of freshwater bivalve Lamellidens consobrinus. The bivalves were collected from Chehedi (Lat19.931192o Long73.854105o) which is located on the bank of Darna River in Nashik district of state Maharashtra (India). Freshwater bivalves, Lamellidens consobrinus were exposed to sub lethal concentration of pesticide profenofos (1/10th LC50 value of 96 hrs.) i.e. 0.59 ppm for 10, 20 and 30 days. The histopathological changes in the freshwater bivalve were studied in relation to control groups by routine micro technique and staining procedures. The histopathological changes in gill architecture characterized by epithelial necrosis and swelling. Degeneration of respiratory epithelial cells and connective tissue was found. The histopathological changes were gradually increased as exposure period was increased. The histopathological changes were also observed in hepatopancreas. The hepatic lobules of hepatopancreas showed swelling. There was a rupture of the basement membrane, separation of epithelium from the basement membrane, swelling of columnar epithelial cells and secretory cells, necrosis and vacuolization of cells, increase in size of the lumen, loss of cytoplasm and degeneration of nucleus of cells occurs.