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The use of biomarkers in Daphnia magna testing: 1. The digestive physiology of daphnids exposed to toxic stress
De Coen, W.M.; Janssen, C.R. (1998). The use of biomarkers in Daphnia magna testing: 1. The digestive physiology of daphnids exposed to toxic stress. Hydrobiologia 367: 199-209. https://dx.doi.org/10.1023/A:1003240502946
In: Hydrobiologia. Springer: The Hague. ISSN 0018-8158; e-ISSN 1573-5117, meer
Peer reviewed article  
Beschikbaar in  Auteurs 
Trefwoorden
    Amylase
    Aquatic communities > Plankton > Zooplankton
    Biomarkers
    Enzymes > Hydrolases > Peptide hydrolases > Proteinases > Serine proteinases > Trypsin
    Filtration
    Food
    Lipids > Isoprenoids > Terpenoids > Pyrethroids > Insecticides > Pyrethroid insecticides > Ectoparasiticides > Fenvalerate
    Trypsin
    Daphnia magna Straus, 1820 [WoRMS]
Auteurs  Top 
  • De Coen, W.M., meer
  • Janssen, C.R., meer
Abstract
    We investigated the effect of short-term exposure to cadmium and 2,3-dichlorophenoxy acetic acid on the digestive physiology of Daphnia magna and the consequences for the bioenergetics of the organism. In both cases, ingestion was more drastically reduced compared to digestive enzyme activity. Furthermore a differential shift in catabolism was noted: in general polysaccharidases were less affected than the enzymes responsible for protein and lipid digestion. Comparison of the '1 h in vivo fluorescence' criterion (Janssen gr Persoone, 1993) with the ingestion and digestive enzyme activity revealed that this rapid screening assay should be considered as a quantification of ingestion inhibition rather than a methodology assessing digestive enzyme inhibition.
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