Potential use of glycogen level as biomarker of chemical stress in Biomphalaria glabrata

摘要: Biomphalaria glabrata, a freshwater gastropod mollusc, was tested as biondicator organism to assess cadmium, lead and arsenic exposure using acute laboratory bioassays. Modifications of glycogen levels were measured in different anatomical regions B. glabrata order test the usefulness this parameter general biomarker chemical stress. The snails exposed 96 h concentrations following contaminants: 0.1 0.05 mg Cd/L; 0.5, Pb/L; As/L. Significant decreases polysaccharide content observed gonadal region for all treated animals. Arsenic at 0.5 mg/L level also able decrease pulmonary digestive gland region. Glycogen cephalopedal animals presented significant (p < 0.05) when compared with control organisms only highest exposure. To establish possible correlations between contaminants accumulated by snails, analyses elements bioaccumulated performed. Cadmium followed similar pattern bioaccumulation values bioaccumulation, however, © 2006 Elsevier Ireland Ltd. All rights reserved.