Journal
TOXICOLOGICAL AND ENVIRONMENTAL CHEMISTRY
Volume 97, Issue 5, Pages 674-686Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/02772248.2015.1058381
Keywords
zinc; glutathione; lipid peroxidation; valve movement; depuration
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Susceptibility and response of bivalves, the clam Ruditapes decussatus, to zinc (Zn) were studied by monitoring behavior using valve movement and some biochemical parameters. The LC50 was 4.1 mg L-1 at 7 days. Depuration of Zn from their tissues was also followed. Accumulation of Zn increased with concentration and duration of exposure. After 20 days, Zn caused impairment of valve movement as well as the antioxidant system, decreasing glutathione and protein levels and increasing the lipid peroxidation which is indicative of oxidative damage. Results suggested that behavior and biochemical parameters of clam R. decussatus were sensitive and suitable responses for assessing the effects of Zn on the aquatic ecosystems. It could be concluded that there is a time-dose-response relationship of Zn with behavior and oxidative stress of R. decussatus.
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