Growth Stimulation Effects of Environmentally Realistic Contaminant Mixtures on a Marine Diatom

To estimate mixture effects caused by the high number of chemicals simultaneously present in the environment, methods for routine effect assessment of environmentally realistic contaminant mixtures are needed. We repeatedly exposed the marine diatom Phaeodactylum tricornutum to SpeediskTM passive sa...

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Bibliographic Details
Published in:Environmental toxicology and chemistry 2019-06, Vol.38 (6), p.1313-1322
Main Authors: Moeris, Samuel, Vanryckeghem, Francis, Demeestere, Kristof, Huysman, Steve, Vanhaecke, Lynn, Schamphelaere, Karel A.C.
Format: Article
Language:English
Subjects:
Aquatic Organisms - drug effects
Aquatic Organisms - growth & development
Atenolol
Consumer products
Contaminants
Diatoms - drug effects
Diatoms - growth & development
Discriminant Analysis
Ecotoxicology
Environmental assessment
Environmental effects
Environmental Monitoring
Freeze-thaw
Freezing
Growth stimulation
Harbors
High performance liquid chromatography
Least-Squares Analysis
Liquid chromatography
Marine pollution
Mixture toxicology
Multivariate Analysis
Multivariate statistical analysis
Organic chemistry
Passive sampler
Pesticides
Principal Component Analysis
Realistic contaminant mixtures
Statistical analysis
Statistical methods
Stimulation
Thawing
Water analysis
Water Pollutants, Chemical - toxicity
Water sampling
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Summary:To estimate mixture effects caused by the high number of chemicals simultaneously present in the environment, methods for routine effect assessment of environmentally realistic contaminant mixtures are needed. We repeatedly exposed the marine diatom Phaeodactylum tricornutum to SpeediskTM passive sampler extracts and observed statistically significant growth stimulation up to 6 and 7% for samples from inside and outside the harbor of Zeebrugge, respectively. These effects were found at summed contaminant concentrations (159–166 ng L–1) that were within a 1.1‐ to 2.4‐fold range of those observed in grab water samples taken during sampler deployment. These stimulatory effects were confirmed in 2 independent tests with extracts stored for
ISSN:0730-7268
1552-8618
DOI:10.1002/etc.4431