Lead and cadmium accumulation in anuran amphibians of a permanent water body in arid Midwestern Argentina.

Environmental Science and Pollution Research International
Mariana B JofréEnrique Caviedes-Vidal

Abstract

Heavy metals have been detected in water and sediments from the Embalse La Florida, an artificial lake in the arid region of San Luis province, Argentina, representing one of the few sources of permanent water for reproduction of native anuran species. This study assesses lead (Pb) and cadmium (Cd) concentrations in the anuran species found in this water reservoir as well as differences between compounds, species and sites of collection. Adult anuran amphibians were collected on the north and south shores of the Embalse La Florida and Pb and Cd concentrations were measured in whole body homogenates digested using wet ashing techniques. All individuals of the six species assayed had detectable levels of Pb and Cd that ranged from 1.19 to 5.57 μg/g dry mass and from 1.09 to 6.86 μg/g dry mass, respectively. Anuran amphibians collected in the more contaminated south shore accumulated 21% more Cd and 40% more Pb than individuals from the less altered north shore. Cd and Pb accumulation was not significantly correlated with the concentration in water at the site of collection. Amphibians of the Embalse La Florida accumulate Cd and Pb. Between and within species, differences were detected in Cd and Pb concentrations. Differences in m...Continue Reading

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Citations

Oct 11, 2017·Environmental Science and Pollution Research International·Lihong ChaiHongzhang Deng
Jul 23, 2014·Environmental Science and Pollution Research International·Zoran PetrovićMirjana Lukić

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