Summary
The distribution of Pb, Zn, Cd and Cu throughout the body tissues of Helix aspersa was determined. The digestive gland of the mollusc was shown to be an important store of Pb, Zn and Cd while Cu was found to be more evenly distributed throughout the tissues of the animal. These results are discussed with relation to previous work concerning heavy metal content in molluscs. The selectivity of the digestive gland for Cd was higher than it was for either Pb or Zn and it is suggested that analysis of the digestive gland of molluscs may be useful in studying levels of Cd at different sites.
At a contaminated site the levels of Cd in Helix aspersa were shown to be 13 times greater than at a relatively uncontaminated site.
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Coughtrey, P.J., Martin, M.H. The distribution of Pb, Zn, Cd and Cu within the pulmonate mollusc Helix aspersa müller. Oecologia 23, 315–322 (1976). https://doi.org/10.1007/BF00345960
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DOI: https://doi.org/10.1007/BF00345960