Advertisement

Effects of Sublethal Copper Exposure on Copper Accumulation, Food Consumption, Growth, Energy Stores, and Nucleic Acid Content in Common Carp

  • G.  De Boeck
  • A.  Vlaeminck
  • R.  Blust

Abstract.

Juvenile common carp were exposed for 28 days to three different sublethal copper concentrations (0.20 μM, 0.55 μM, and 0.80 μM). Food consumption was monitored on a daily basis during the exposure period, while growth, copper accumulation, energy stores, and nucleic acid contents were assessed weekly. Copper exposure to 0.80 μM affected both growth and feeding behavior in common carp. At 0.55 μM, growth was affected despite normal food consumption. Even at the lowest copper concentration (0.20 μM), metabolic demand for the fish increased, challenging the carp with an increased demand for food. Copper accumulation mainly occurred in the liver, reaching an equilibrium between uptake and excretion after 1 month of exposure. Substantial biochemical changes were observed at the two highest copper exposure concentrations, but the correlation between growth rate and RNA:DNA ratio was poor considering the substantial differences in growth rate. The use of the RNA:DNA ratio as a sensitive biomarker is questioned.

Keywords

Energy Store Feeding Behavior Food Consumption Copper Concentration Common Carp 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Copyright information

© Springer-Verlag New York Inc. 1997

Authors and Affiliations

  • G.  De Boeck
    • 1
  • A.  Vlaeminck
    • 1
  • R.  Blust
    • 1
  1. 1.Ecophysiology and Biochemistry, Department of Biology, Antwerp University (RUCA), Groenenborgerlaan 171, B-2020 Antwerp, Belgium BE

Personalised recommendations