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Heavy metal levels in the sediments of four Dar es Salaam mangroves: accumulation in, and effect on the morphology of the periwinkle, Littoraria scabra (Mollusca: Gastropoda)
De Wolf, H.; Ulomi, S.A.; Backeljau, T.; Pratap, H.B.; Blust, R. (2001). Heavy metal levels in the sediments of four Dar es Salaam mangroves: accumulation in, and effect on the morphology of the periwinkle, Littoraria scabra (Mollusca: Gastropoda). Environ. Int. 26: 243-249
In: Environment International. Pergamon: New York. ISSN 0160-4120, more
Peer reviewed article

Also published as
  • De Wolf, H.; Ulomi, S.A.; Backeljau, T.; Pratap, H.B.; Blust, R. (2001). Heavy metal levels in the sediments of four Dar es Salaam mangroves: accumulation in, and effect on the morphology of the periwinkle, Littoraria scabra (Mollusca: Gastropoda), in: (2001). VLIZ Coll. Rep. 31(2001). VLIZ Collected Reprints: Marine and Coastal Research in Flanders, 31: pp. chapter27, more

Available in Authors 
    VLIZ: Open Repository 98641 [ OMA ]

Keywords
    Bioaccumulation; Ecophysiology; Gastropods; Heavy metals; Indicator species; Mangrove swamps; Mangroves; Mollusks; Morphology; Morphology; Morphology; Pollution detection; Pollution effects; Sediment pollution; Sediments; Tissues; Gastropoda [WoRMS]; Mollusca [WoRMS]; ISW, Tanzania, Dar es Salaam [Marine Regions]; Tanzania [Marine Regions]; Marine

Authors  Top 
  • De Wolf, H., more
  • Ulomi, S.A.
  • Backeljau, T., more
  • Pratap, H.B.
  • Blust, R., more

Abstract
    Heavy metals were determined in the soft tissue and shells of the littorinid, Littoraria scabra, and in the sediments of four mangrove areas along the Dar es Salaam coastline where L. scabra was collected. Several metals accumulate, preferentially in the animals' soft body parts, but do not seem to affect the shell morphology of this species. Sediment-metal levels, measured in the direct vicinity of Dar es Salaam have increased dramatically over the last decade. Nonetheless, these levels are still lower compared to metal-sediment levels reported in polluted European and American estuaries. Soft-tissue metal levels detected in L. scabra are, nevertheless, with the exception of Cr and Zn, comparable to metal levels reported in other gastropod species.

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