Histopathological effects of detergent, Linear Alkyl benzene sulphonate on hepatopancreas of freshwater prawn, Macrobrachium lamarrei (Crustacea-Decapoda)

Abstract

Freshwater prawns, Macrobrachium lamarrei (Crustacea-Decapoda) were subjected to static subacute exposure (0.755 mg/l) of detergent, Linear Alkyl Benzene Sulphonate (LAS) (25% of 96h LC50) for 10,20 & 30 days. Hepatopancreas showed pronounced changes like vacuolization, hypertrophy, hyperplasia and degenerative changes leading to almost complete loss of histoarchitecture after 30 days exposure. Peculiar cell shedding in tubules was noticed after 10 day exposure while heavy increase in wandering cell population was recorded after 20 day exposure. R&B cells were found most effected throughout the hepatopancreas. Histopathological effects were found duration dependent. Underlying mechanism of detergent toxicity and role of histopathology as biomarker has been discussed.