Uptake and Distribution of Lead (Pb) and Cadmium (Cd) in the Freshwater Crab, Potamonautes Perlatus (Crustacea) in the Eerste River, ... View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2003-05

AUTHORS

A. J. Reinecke, R. G. Snyman, J. A. J. Nel

ABSTRACT

The uptake and distribution of lead (Pb) and cadmium (Cd) in thefreshwater crab, Potamonautes perlatus in the Eerste River,South Africa were studied seasonally over two years by comparingconcentrations in crabs, water and sediment in two localities, one upstream and one downstream from the town of Stellenbosch. Lead and cadmium concentrations in whole crabs of different sizeclasses as well as concentrations in various organs and tissues were determined by atomic absorption spectrometry. Data on physical, chemical and bacteriological features are also presented. The mean Zn concentration in the sediment of the downstream locality (77.5 ± 38.4 μg g-1) was significantly higher than in the less polluted upstream locality(44.7 ± 32.8 μg g-1) whilst the manganese concentration of the sediment was significantly higher in the upstream locality. The gonads (mean Pb 23.4, range 0.1-125.0 μg g-1; mean Cd 5.3, range 0.1-22.2 μg g -1) and carapace (mean Pb 23.4, range 0.7-327.6 μg g-1; mean Cd 4.0, range 0.4-18.5 μg g-1) contained thehighest concentrations of both metals irrespective of season orlocality. For both Pb and Cd significant differences (p < 0.05, Student's t-test) were found between the metal content of different organs. The gonads had the highest and the digestiveglands the lowest concentrations of both heavy metals.Results indicated that anthropogenic activities did not influencesediment and water concentrations significantly. Smaller crabs accumulated more lead and cadmium than larger crabs with all crabs having significantly higher concentrations than both waterand sediment. No significant differences in mean concentrationsof lead and cadmium in whole crabs or organs were found between the two localities. Although body loads for both metals did notreflect prevailing environmental levels of these metals reliably,the crabs may still be used to monitor bioavailability over time. More... »

PAGES

395-408

References to SciGraph publications

  • 2000-09. The Transfer of Lead (Pb) from Earthworms to Shrews (Myosorex varius) in ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY
  • 1986-09. Uptake of sediment-bound lead and zinc by the freshwater isopodAsellus communis at three different pH levels in ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY
  • 1981-08. The distribution of invertebrate communities in a small South African river in HYDROBIOLOGIA
  • 1978-07. Patterns of trace metal accumulation in crayfish populations in BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY
  • Journal

    TITLE

    Water, Air, & Soil Pollution

    ISSUE

    1-4

    VOLUME

    145

    Author Affiliations

    Identifiers

    URI

    http://scigraph.springernature.com/pub.10.1023/a:1023602121272

    DOI

    http://dx.doi.org/10.1023/a:1023602121272

    DIMENSIONS

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