Development of a larval bioassay using the calanoid copepod, Eurytemora affinis to assess the toxicity of sediment-bound pollutants.
Identifieur interne : 000470 ( Main/Exploration ); précédent : 000469; suivant : 000471Development of a larval bioassay using the calanoid copepod, Eurytemora affinis to assess the toxicity of sediment-bound pollutants.
Auteurs : Teddy Lesueur [France] ; Céline Boulangé-Lecomte ; Benoît Xuereb ; Hélène Budzinski ; Jérôme Cachot ; Ludovic Vicquelin ; Nathalie Giusti-Petrucciani ; Sabine Marie ; Fabienne Petit ; Joëlle Forget-LeraySource :
- Ecotoxicology and environmental safety [ 1090-2414 ] ; 2013.
English descriptors
- KwdEn :
- MESH :
- chemical , toxicity : Polychlorinated Biphenyls, Water Pollutants, Chemical.
- chemistry : Geologic Sediments.
- drug effects : Copepoda, Larva.
- methods : Biological Assay, Environmental Monitoring.
- physiology : Copepoda.
- Animals.
Abstract
Hydrophobic pollutants, in particular sediment-sorbed organic compounds, are widespread in the aquatic environment and could represent a threat to living organisms. Estuarine species, which live in turbulent ecosystems, are particularly exposed to this mode of contamination. For precise evaluation of the toxicity of hydrophobic contaminants desorbed from particles, a new larval assay using nauplii of the estuarine calanoid copepod Eurytemora affinis was developed. It consists of the direct exposure of copepods during naupliar development to elutriates of an unpolluted sediment spiked with different model contaminants. This bioassay measures the toxicity of the bioavailable fraction of particle-sorbed pollutants on the naupliar stage of copepods. Mortality and growth (non-invasive endpoints) in nauplii were analysed after six days of exposure. This approach was validated using six pollutants with different modes of action: benzo[a]pyrene (BaP), dimethylbenzo[a]anthracene (DMBA), phenanthrene (PHE), polychlorinated biphenyls (PCB 126, PCB 153) and 4-nonylphenol (4-NP). All these compounds induced a dose-dependent increase in toxic effects. Lethal effects only occurred at the highest tested concentrations: 58,541 and 6092 ng g(-1) dry weight sediment (dws), for PHE and DMBA, respectively. Sublethal effects (growth inhibition) were observed at lower concentrations for all tested compounds except PCB 153, from 8, 142, 297, 6092 and 8453 ng g(-1) dws for PCB 126, BaP, PHE, DMBA and 4-NP, respectively.
DOI: 10.1016/j.ecoenv.2013.04.025
PubMed: 23731865
Affiliations:
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Le document en format XML
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last="Boulangé-Lecomte">Céline Boulangé-Lecomte</name></author><author><name sortKey="Xuereb, Benoit" sort="Xuereb, Benoit" uniqKey="Xuereb B" first="Benoît" last="Xuereb">Benoît Xuereb</name></author><author><name sortKey="Budzinski, Helene" sort="Budzinski, Helene" uniqKey="Budzinski H" first="Hélène" last="Budzinski">Hélène Budzinski</name></author><author><name sortKey="Cachot, Jerome" sort="Cachot, Jerome" uniqKey="Cachot J" first="Jérôme" last="Cachot">Jérôme Cachot</name></author><author><name sortKey="Vicquelin, Ludovic" sort="Vicquelin, Ludovic" uniqKey="Vicquelin L" first="Ludovic" last="Vicquelin">Ludovic Vicquelin</name></author><author><name sortKey="Giusti Petrucciani, Nathalie" sort="Giusti Petrucciani, Nathalie" uniqKey="Giusti Petrucciani N" first="Nathalie" last="Giusti-Petrucciani">Nathalie Giusti-Petrucciani</name></author><author><name sortKey="Marie, Sabine" sort="Marie, Sabine" uniqKey="Marie S" first="Sabine" last="Marie">Sabine 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Estuarine species, which live in turbulent ecosystems, are particularly exposed to this mode of contamination. For precise evaluation of the toxicity of hydrophobic contaminants desorbed from particles, a new larval assay using nauplii of the estuarine calanoid copepod Eurytemora affinis was developed. It consists of the direct exposure of copepods during naupliar development to elutriates of an unpolluted sediment spiked with different model contaminants. This bioassay measures the toxicity of the bioavailable fraction of particle-sorbed pollutants on the naupliar stage of copepods. Mortality and growth (non-invasive endpoints) in nauplii were analysed after six days of exposure. This approach was validated using six pollutants with different modes of action: benzo[a]pyrene (BaP), dimethylbenzo[a]anthracene (DMBA), phenanthrene (PHE), polychlorinated biphenyls (PCB 126, PCB 153) and 4-nonylphenol (4-NP). All these compounds induced a dose-dependent increase in toxic effects. Lethal effects only occurred at the highest tested concentrations: 58,541 and 6092 ng g(-1) dry weight sediment (dws), for PHE and DMBA, respectively. Sublethal effects (growth inhibition) were observed at lower concentrations for all tested compounds except PCB 153, from 8, 142, 297, 6092 and 8453 ng g(-1) dws for PCB 126, BaP, PHE, DMBA and 4-NP, respectively.</div></front></TEI><affiliations><list><country><li>France</li></country><region><li>Haute-Normandie</li><li>Région Normandie</li></region><settlement><li>Le Havre</li></settlement></list><tree><noCountry><name sortKey="Boulange Lecomte, Celine" sort="Boulange Lecomte, Celine" uniqKey="Boulange Lecomte C" first="Céline" last="Boulangé-Lecomte">Céline Boulangé-Lecomte</name><name sortKey="Budzinski, Helene" sort="Budzinski, Helene" uniqKey="Budzinski H" first="Hélène" last="Budzinski">Hélène Budzinski</name><name sortKey="Cachot, Jerome" sort="Cachot, Jerome" uniqKey="Cachot J" first="Jérôme" last="Cachot">Jérôme Cachot</name><name sortKey="Forget Leray, Joelle" sort="Forget Leray, Joelle" uniqKey="Forget Leray J" first="Joëlle" last="Forget-Leray">Joëlle Forget-Leray</name><name sortKey="Giusti Petrucciani, Nathalie" sort="Giusti Petrucciani, Nathalie" uniqKey="Giusti Petrucciani N" first="Nathalie" last="Giusti-Petrucciani">Nathalie Giusti-Petrucciani</name><name sortKey="Marie, Sabine" sort="Marie, Sabine" uniqKey="Marie S" first="Sabine" last="Marie">Sabine Marie</name><name sortKey="Petit, Fabienne" sort="Petit, Fabienne" uniqKey="Petit F" first="Fabienne" last="Petit">Fabienne Petit</name><name sortKey="Vicquelin, Ludovic" sort="Vicquelin, Ludovic" uniqKey="Vicquelin L" first="Ludovic" last="Vicquelin">Ludovic Vicquelin</name><name sortKey="Xuereb, Benoit" sort="Xuereb, Benoit" uniqKey="Xuereb B" first="Benoît" last="Xuereb">Benoît Xuereb</name></noCountry><country name="France"><region name="Région Normandie"><name sortKey="Lesueur, Teddy" sort="Lesueur, Teddy" uniqKey="Lesueur T" first="Teddy" last="Lesueur">Teddy Lesueur</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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