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Impact of mercury on the activity pattern of a marker enzyme in a freshwater bivalve

Author

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  • Subramanian Rajalakshmi

    (Cochin University of Science & Technology)

  • Ambat Mohandas

    (Cochin University of Science & Technology)

Abstract

Sessile benthic organisms are universally accepted as bio-indicators of environmental pollution and lysosomal membrane is often the target of injury by xenobiotics resulting in destabilization. Effect of mercury on the activity pattern of the marker enzyme, Acid Phosphatase in the gill and hepatopancreas of the freshwater mussel, Lamellidens corrianus (Lea) at 24, 72, and 168 h, post-exposure discussed. ACP activity was determined as given in Sigma Technical Bulletin (No. 104) and µmol of p-nitrophenol liberated/mg protein/h calculated. The work aimed to study the duration of exposure and concentration of the metal influence, the direction of the response of the enzyme in the two tissues studied and results show that the concentration of the metal as well as the period of exposure do influence the enzyme activity and may have predictive value as a biomarker of impending population changes. Higher concentration of the metal is assumed to have induced stress proteins like metallothioneins.

Suggested Citation

  • Subramanian Rajalakshmi & Ambat Mohandas, 2008. "Impact of mercury on the activity pattern of a marker enzyme in a freshwater bivalve," Environment Systems and Decisions, Springer, vol. 28(3), pages 249-252, September.
    • Handle: RePEc:spr:envsyd:v:28:y:2008:i:3:d:10.1007_s10669-007-9135-3
    DOI: 10.1007/s10669-007-9135-3
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