• Phosphamidon induced alterations in the nitrogen metabolic profiles of penaeid prawn,Penaeus indicus during acute and chronic exposure

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    • Keywords


      Phosphamidon; protease; glutamate dehydrogenase; Penaeus indicus

    • Abstract


      Changes in the nitrogen metabolic profdes of midgut gland, muscle and gill tissues were studied, following the exposure ofPenaeus indicus to acute (2 day) and chronic (10, 20 and 30 day) exposure to sublethal concentration (0–2 ppm) of phosphamidon. The proteolytic activity of phosphamidon exposed prawn tissues was significantly elevated. All the phosphamidon exposed prawn tissues showed efficient mechanisms of ammonia detoxification in the chronically exposed prawns when compared to acutely exposed prawns. The survivability of these prawns in the polluted habitats might be due to the operation of compensatory adaptive mechanisms in the metabolic profdes such as increased biosynthesis of different kinds of proteins and also the detoxification and transformation of ammonia, the toxic nitrogenous end product of aquatic organisms.

    • Author Affiliations


      M Srinivasulu Reddy1 K V Ramana Rao1

      1. Division of Toxicology, Department of Marine Zoology, S V University P G Centre, Kavali - 524 202, India
    • Dates


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