Ruditapes decussatus and Ruditapes philippinarum exposed to cadmium: toxicological effects and bioaccumulation patterns

Comparative Biochemistry and Physiology. Toxicology & Pharmacology : CBP
Etelvina FigueiraRosa Freitas

Abstract

Since differences in metal accumulation may exist between bivalve species, the aim of this study was to assess the impact of cadmium (Cd) on Ruditapes decussatus and Ruditapes philippinarum. For this, the Cd accumulation, mortality rates and biochemical responses were analysed in the two species after 5days of exposure, under laboratory-controlled conditions. The concentration of Cd that caused 50% of mortality on clams was two-times higher in R. decussatus than in R. philippinarum. For both species, higher percentage (84.5-98.2%) of the Cd was in the insoluble fraction, but the Cd concentration in solution was 3 to 8 times higher in R. decussatus. Nevertheless, R. philippinarum presented higher oxidative stress and higher CAT activity. The paradox observed between the two clams can be explained by the higher capacity of R. decussatus to increase the expression of MTs when exposed to Cd.

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Citations

Mar 5, 2013·Environmental Science and Pollution Research International·Etelvina Figueira, Rosa Freitas
Jun 15, 2013·Environmental Science and Pollution Research International·S C AntunesBruno Nunes
Dec 11, 2013·Environmental Science and Pollution Research International·Sana Ben-KhedherHamadi Boussetta
Aug 3, 2012·Ecotoxicology and Environmental Safety·Etelvina FigueiraRosa Freitas
Dec 15, 2015·Ecotoxicology and Environmental Safety·Cátia VelezEtelvina Figueira
Oct 17, 2015·The Science of the Total Environment·Rosa FreitasEtelvina Figueira
Aug 19, 2014·Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology·Vanessa CarregosaRosa Freitas
May 6, 2015·Environmental Science and Pollution Research International·Rosa FreitasBruno Nunes
Apr 15, 2015·Environmental Science and Pollution Research International·Cátia VelezRosa Freitas
May 7, 2015·Comparative Biochemistry and Physiology. Toxicology & Pharmacology : CBP·Ângela AlmeidaEtelvina Figueira
Sep 15, 2016·Journal of Applied Toxicology : JAT·Ilseob ShimSeishiro Hirano
Nov 9, 2016·Biological Trace Element Research·F SavorelliC Faggio

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