Potential use of the oligochaeteLimnodrilus profundicolaV., as a bioindicator of contaminant exposure

• DOI: 10.1002/tox.20527
• Publication Date: 2010-07-22T18:57:46Z
• Authors: Adile Ozdemir; Mustafa Duran; Alaattin Sen
• Keywords: methomyl; Water samples; Insecticides; Turkey; Organoplatinum Compounds; environmental exposure; Aromatic hydrocarbons; Fresh Water; Methyl Parathion; 01 natural sciences; Turkey (republic); Model substrates; biochemical composition; water sampling; Pyrethrins; Bioindicator species; acetylthiocholine; Methyl parathion; Cholinesterases; Polycyclic Aromatic Hydrocarbons; enzyme inhibition; Platinum compounds; butyrylthiocholine; water pollution; ethoxyresorufin deethylase; Freshwater oligochaetes; choline derivative; article; biological marker; Pollution; Polychlorinated Biphenyls; Polycyclic aromatic hydrocarbons; inhibition; 6. Clean water; unclassified drug; enzyme activity; streamwater; Polycyclic Hydrocarbons, Aromatic; Oil-contaminated sediments; priority journal; biomarker; annelid worm; Biological Markers; Environmental Monitoring; 570; sampling; cholinesterase; Methomyl; 610; Animals; Biomarkers/metabolism; Cholinesterases/metabolism; Cytochrome P-450 CYP1A1/metabolism; Environmental Monitoring/*methods; Fresh Water/chemistry; Insecticides/metabolism/toxicity; Methomyl/metabolism/toxicity; Methyl Parathion/metabolism/toxicity; Nitriles/metabolism/toxicity; Oligochaeta/drug effects/enzymology/*metabolism; Organoplatinum Compounds/analysis/metabolism/toxicity; Polychlorinated Biphenyls/analysis/metabolism/toxicity; Polycyclic Aromatic Hydrocarbons/analysis/*metabolism/; substrate; Limnodrilus profundicola; propionylthiocholine; Anoxic sediments; In-vivo; Nitriles; Cytochrome P-450 CYP1A1; bioindicator; Animals; Oligochaeta; Contaminant exposure; 0105 earth and related environmental sciences; EROD activity; parathion methyl; nonhuman; Bioindicator; Ethoxyresorufin-O-deethylase; insecticide; pollution exposure; deltamethrin; PAH; Cholinesterase; Biochemical tools; sediment; 13. Climate action; annelid; Deltamethrin; Biomarkers; Water Pollutants, Chemical

AbstractCholinesterase (ChE) and ethoxyresorufin‐O‐deethylase (EROD) were of special interest to this study as these biochemical tools have been widely used for the determination of exposure to pollutants. In this study, the freshwater oligochaeteLimnodrilus profundicolawas tested for its potential as a bioindicator of freshwater pollution. For this purpose, the ChE and EROD activities ofL. profundicolaand the level of polycyclic aromatic hydrocarbons (PAH) of water samples collected from different sites along the Curuksu stream on the Menderes River (the ancient Meander) running through south‐western Turkey were studied. First, these activities were characterized using, as model substrates, acetylthiocholine (ATC), propionylthiocholine (PTC), and butyrylthiocholine (BTC). Then, thein vivoeffects of insecticides and pollutants on these activities were investigated.L. profundicolawere exposed to various doses of methyl‐parathion, methomyl, and deltamethrin. Although significant inhibition of ChE was detected with each of the insecticides, the highest level of inhibition was observed with methyl‐parathion. In addition to the inhibition of ChE, the activity of EROD was induced by exposure to oil‐contaminated sediments. Thus, althoughL. profundicolahas a reputation for being very resistant to pollution (although it is not insensitive to it), we demonstrated that it may potentially be used as a bioindicator species for contaminant exposure when ChE and EROD are used as biomarkers. © 2010 Wiley Periodicals, Inc. Environ Toxicol 26: 37–44, 2011.