Distribution of heavy metal concentrations in different soft tissues and shells of the bivalve Psammotaea elongata and gastropod Faunus ater collected from Pantai Sri Tujuh, Kelantan

Snails (Psammotaea elongate) and clams (Faunus ater) collected from Pantai Sri Tujuh, Tumpat (Kelantan) were dissected into operculum, foot, gill, muscle, and digestive caecum. The clams were dissected into siphon, foot, gill, muscle, mantle and remainder parts. The different soft tissues and shells were pooled and determined for Cd, Cu, Pb and Zn. Both species were found to have higher concentrations of non-essential Cd and Pb in their shells than those in the different soft tissues. On the other hand, the soft tissues (especially remainder parts) had consistently higher concentrations of essential Zn and Cu than those in the shells in both molluscs. The ecological distribution and metal concentrations for the two molluscs species found at Pantai Sri Tujuh can serve as a baseline information.