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@article{2246443,
author = {Shuliakevich, Aliaksandra and Schroeder, Katja and Nagengast, Laura and Muz, Melis and Pípal, Marek and Brueckner, Ira and Hilscherová, Klára and Brack, Werner and Schiwy, Sabrina and Hollert, Henner},
article_location = {Amsterdam},
article_number = {December 2022},
doi = {http://dx.doi.org/10.1016/j.scitotenv.2022.157922},
keywords = {Rainwater overflow; Sediment remobilization; Freeze-dried sediments; Toxicity drivers},
language = {eng},
issn = {0048-9697},
journal = {Science of the Total Environment},
title = {Morphological and behavioral alterations in zebrafish larvae after exposure to contaminated river sediments collected in different weather conditions},
url = {https://www.sciencedirect.com/science/article/pii/S0048969722050215?via%3Dihub},
volume = {851},
year = {2022}
}
TY - JOUR
ID - 2246443
AU - Shuliakevich, Aliaksandra - Schroeder, Katja - Nagengast, Laura - Muz, Melis - Pípal, Marek - Brueckner, Ira - Hilscherová, Klára - Brack, Werner - Schiwy, Sabrina - Hollert, Henner
PY - 2022
TI - Morphological and behavioral alterations in zebrafish larvae after exposure to contaminated river sediments collected in different weather conditions
JF - Science of the Total Environment
VL - 851
IS - December 2022
SP - 1-12
EP - 1-12
PB - Elsevier Science
SN - 00489697
KW - Rainwater overflow
KW - Sediment remobilization
KW - Freeze-dried sediments
KW - Toxicity drivers
UR - https://www.sciencedirect.com/science/article/pii/S0048969722050215?via%3Dihub
N2 - Wastewater treatment plants (WWTPs) are the primary source of micropollutants in aquatic ecosystems. Many micropollutants tend to bind to sediments and persist until remobilizion by bioturbation or flood events. Advanced ef-fluent treatment by ozonation has been proven to eliminate most micropollutants.The present study characterizes sediments' toxic potential regarding zebrafish embryo development, which highly complex nervous system is vulnerable to exposure to neurotoxic substances. Furthermore, behavioral changes can be induced even at low pollutant concentrations and do not cause acute toxicity.The study area includes stretches of the main waterbody, the Wurm River (sampling sites W1-W5), and its tributary the Haarbach River (sampling sites H1, and H2) in North-Rhine Westphalia, Germany. Both waterbodies serve as recipi-ents of WWTPs' effluents. The effluent entering the Haarbach River is conventionally treated, while the Wurm River receives ozonated effluent from the Aachen-Soers WWTP. Seven sampling sites up-and downstream of the WWTPs were investigated in June of two subsequent years. The first sampling campaign in 2017 was characterized by pro-longed dry weather. The second sampling campaign in 2018 occurred after prolonged rain events and the release of the rainwater overflow basin.Direct exposure of zebrafish embryos to native sediments using the sediment contact test represented an ecologically realistic scenario and showed no acute sublethal effects. Exposure of the zebrafish embryo to freeze-dried sediments representing the ecotoxicological status of sediments during flood events unfolded acute sublethal toxicity. Behavioral studies with zebrafish larvae were an essential part of environmental neurotoxicity testing. Zebrafish larvae exposed to sediments' concentrations causing no acute effects led to behavioral changes signalizing neurotoxic substances in sed-iments. Polyaromatic hydrocarbons, polychlorinated biphenyls, and nitroaromatic compounds were identified as po-tential toxicity drivers, whereby the rainwater overflow basin served as a possible source of pollution. Mixture toxicity, effect-directed analysis, and further sediment monitoring are needed.
ER -
SHULIAKEVICH, Aliaksandra, Katja SCHROEDER, Laura NAGENGAST, Melis MUZ, Marek PÍPAL, Ira BRUECKNER, Klára HILSCHEROVÁ, Werner BRACK, Sabrina SCHIWY a Henner HOLLERT. Morphological and behavioral alterations in zebrafish larvae after exposure to contaminated river sediments collected in different weather conditions. \textit{Science of the Total Environment}. Amsterdam: Elsevier Science, 2022, roč.~851, December 2022, s.~1-12. ISSN~0048-9697. Dostupné z: https://dx.doi.org/10.1016/j.scitotenv.2022.157922.
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