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. https://dx.doi.org/10.1016/S0160-4120(00)00113-6 In: Environment International. Pergamon: New York. ISSN 0160-4120; e-ISSN 1873-6750, more |  |
| Keywords | Biological phenomena > Accumulation > Bioaccumulation
Biology > Physiology > Ecophysiology
Chemical elements > Metals > Heavy metals
Detection > Pollution detection
Gastropods
Mangroves
Mollusks
Morphology
Morphology
Morphology
Pollution > Sediment pollution
Pollution effects
Sediments
Taxa > Species > Indicator species
Tissues
Water bodies > Inland waters > Wetlands > Swamps > Mangrove swamps
Gastropoda [WoRMS]; Mollusca [WoRMS]
ISW, Tanzania, Dar es Salaam [Marine Regions]; Tanzania [Marine Regions]
Marine/Coastal |
| 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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