Oxygen consumption in tropical bivalves Perna viridis (Linn.) and Meretrix casta (Chem.) exposed to heavy metals

The effects of Ag, Cu, Zn and Pb ions on the oxygen consumption of Perna viridis and Meretrix casta were studied. Sublethal concentrations of Ag, Cu, and Zn functioned as respiratory depressants in both species. Decrease in respiration in P. viridis occurred above 0.01 ppm with Ag and 0.05 ppm with...

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Bibliographic Details
Published in:Indian journal of marine sciences 1983, Vol.12 (1), p.57-59
Main Authors: Mathew, R, Menon, N.R
Format: Article
Language:English
Subjects:
animal health
animal injuries
aquatic organisms
environmental degradation
Marine
Meretrix casta
Perna viridis
pollution
waste management
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Summary:The effects of Ag, Cu, Zn and Pb ions on the oxygen consumption of Perna viridis and Meretrix casta were studied. Sublethal concentrations of Ag, Cu, and Zn functioned as respiratory depressants in both species. Decrease in respiration in P. viridis occurred above 0.01 ppm with Ag and 0.05 ppm with Cu. In M. casta the rate of oxygen uptake reduced above 0.02 ppm in the case of Ag and Cu, and 1 ppm in the case of Zn. However, Pb, at higher concentrations (>0.4 ppm) accelerated oxygen uptake. Depressive effects of oxygen consumption was manifested at concentrations much below the LC sub(50)/96 hr values.
ISSN:0379-5136
0975-1033