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Title: Acute Toxicity of Metals: Cu, Pb, Cd, Hg and Zn on Marine Molluscs, <i style="">Cerithedia cingulata</i> G., and <i style="">Modiolus philippinarum </i>H.
Authors: Ramakritinan, C M
Chandurvelan, Rathishri
Kumaraguru, A K
Keywords: Acute Toxicity
Heavy Metals
Issue Date: Apr-2012
Publisher: NISCAIR-CSIR, India
Abstract: Present study was intended to compare the acute static renewal toxicity tests on marine snail, <i style="">Cerithidae cingulata</i> and bivalve, <i style="">Modiolus philippinarum </i>that<i style=""> </i>were performed with Cu, Cd, Pb, Zn and Hg. The 96 h LC<sub>50</sub> values for <i style="">C.cingulata</i> were 0.521, 9.193, 15.507, 8.990 and 0.053 mg.l<sup>-1</sup> and the 96 h LC<sub>50</sub> values for <i style="">M.philippinarum</i> were 0.023, 0.221, 2.876, 2.337 and 0.007 mg.l<sup>-1 </sup>in respective metals. This study indicated that mercury was highly toxic to both <i style="">C.cingulata</i> and <i style="">M.philippinarum</i>. While lead was resistant metal to both marine molluscs tested. Order of increasing toxicity of metals to <i style="">C.cingulata</i> was Hg > Cu > Zn> Cd > Pd and to <i style="">M.philippinarum</i> was Hg > Cu > Cd > Zn > Pb. Safe level concentrations for all 5 metals were also calculated. The LC<sub>50</sub> values of the present study may be useful in deriving marine water quality standards in the coastal waters of Gulf of Mannar.
Description: 141-145
ISSN: 0975-1033 (Online); 0379-5136 (Print)
Appears in Collections:IJMS Vol.41(2) [April 2012]

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