Document Detail

Sublethal effect of silver and chromium in the green mussel Perna viridis with reference to alterations in oxygen uptake, filtration rate and membrane bound ATPase system as biomarkers.
MedLine Citation:
PMID:  17585996     Owner:  NLM     Status:  MEDLINE    
Perna viridis is an ideal animal for studying the impairment caused by the effects of heavy metals that are often detected in coastal areas. Preliminary bioassay tests revealed that the lethal (LC(100)), median lethal (LC(50)) and sublethal (LC(0)) concentration of silver and chromium to P. viridis were 6.5, 4.0, 2.0 mg l(-1) and 4.5, 2.5, 1.0 mg l(-1), respectively. Toxic effect of silver and chromium was evaluated in the green mussel P. viridis, with reference to oxygen consumption, filtration rate and ATPase system in laboratory experiments. These parameters were selected as the end point of sublethal stress. Oxygen consumption and filtration rates were calculated as a measure of decline in the dissolved oxygen level and algal concentration (feed) in the aquaria water, respectively. Silver and chromium affects both oxygen consumption and filtration rate significantly (P<0.01) at 96 h when compared to control. The activity of ATPases system in the gills, hepatopancreas, ovary and muscle of mussels were inhibited by silver and chromium indicating that metals exerted significant toxic effect. The inhibition of Na(+)K(+) ATPase, Ca(2+) ATPase and Mg(2+) ATPase in the mussels were significant (P<0.05) for silver and highly significant (P<0.01) for chromium, which indicates that chromium was more toxic to mussels when compared to silver. The assessment of oxygen consumption, filtration and ATPases system can thus be used as a valid biomarker in aquatic ecotoxicology studies.
K Vijayavel; S Gopalakrishnan; M P Balasubramanian
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Publication Detail:
Type:  Journal Article     Date:  2007-06-21
Journal Detail:
Title:  Chemosphere     Volume:  69     ISSN:  0045-6535     ISO Abbreviation:  Chemosphere     Publication Date:  2007 Oct 
Date Detail:
Created Date:  2007-09-24     Completed Date:  2008-01-02     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0320657     Medline TA:  Chemosphere     Country:  England    
Other Details:
Languages:  eng     Pagination:  979-86     Citation Subset:  IM    
Institute for Ocean Management, Koodal Building, Anna University, Chennai 600 025, Tamil Nadu, India.
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MeSH Terms
Adenosine Triphosphatases / metabolism*
Biological Markers / analysis,  metabolism
Cell Membrane / drug effects*,  enzymology,  metabolism
Chromium / toxicity*
Dose-Response Relationship, Drug
Environmental Monitoring / methods*
Oxygen Consumption / drug effects*
Perna / drug effects*,  enzymology,  metabolism,  physiology
Silver / toxicity*
Water Pollutants, Chemical / toxicity*
Reg. No./Substance:
0/Biological Markers; 0/Water Pollutants, Chemical; 7440-22-4/Silver; 7440-47-3/Chromium; EC 3.6.1.-/Adenosine Triphosphatases

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