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Cross-phylum comparison of a chronic biotic ligand model to predict chronic toxicity of copper to a freshwater rotifer, Brachionus calyciflorus (Pallas)
De Schamphelaere, K.A.C.; Heijerick, D.G.; Janssen, C.R. (2006). Cross-phylum comparison of a chronic biotic ligand model to predict chronic toxicity of copper to a freshwater rotifer, Brachionus calyciflorus (Pallas). Ecotoxicol. Environ. Saf. 63(2): 189-195. https://dx.doi.org/10.1016/j.ecoenv.2005.07.012
In: Ecotoxicology and Environmental Safety. Academic Press/Elsevier: Amsterdam, Netherlands etc. ISSN 0147-6513; e-ISSN 1090-2414, more
Peer reviewed article  
Available in  Authors 
Keywords
    Bioavailability
    Chemical elements > Metals > Heavy metals
    Chemical elements > Metals > Transition elements > Heavy metals > Copper
    Environment
    Environment
    Environments > Aquatic environment
    Freshwater environment
    Ligands
    Models
    Organic matter > Carbon > Organic carbon > Dissolved organic matter > Dissolved organic carbon
    Risk analysis
    Toxicity
    Toxicology > Ecotoxicology
    Brachionus calyciflorus Pallas, 1766 [WoRMS]; Invertebrata; Rotifera [WoRMS]
    Fresh water
Authors  Top 
  • De Schamphelaere, K.A.C., more
  • Heijerick, D.G., more
  • Janssen, C.R., more
Abstract
    Short chronic 48-h toxicity tests with the freshwater rotifer Brachionus calyciflorus (Pallas) were conducted to assess the modifying effects of pH and natural dissolved organic carbon (DOC) concentration on reproductive toxicity of Cu. Toxicity tests were carried out in four test waters according to a 2 x 2 design, in which pH (6 and 7.8) and DOC (5 and 15 mgC/L) were the test variables. Concentrations of dissolved Cu with no observed effect at 48 h (NOEC) varied 12-fold between 8.2 and 103 μg/L. Higher DOC and higher pH resulted in a reduction of toxicity, which is in line with the concepts of the biotic ligand model (BLM). A chronic Cu-BLM, originally developed for the cladoceran Daphnia magna, was calibrated to the rotifer dataset and was found to be able to predict all rotifer NOECs with an error factor of less than 1.6. This finding may be of great interest for risk assessment and the establishment of water quality criteria, as it suggests that chronic Cu-BLMs are comparable across phyla (i.e., arthropoda to rotifera).
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