Cyanotoxins associated with macrophytes in Berlin (Germany) water bodies - Occurrence and risk assessment.

Autor: Fastner J; German Environment Agency, Schichauweg 58, 12307 Berlin, Germany. Electronic address: jutta.fastner@uba.de., Teikari J; Dept. of Agricultural Sciences, University of Helsinki, Finland., Hoffmann A; Berlin Brandenburg State Laboratory, Rudower Chaussee 39, 12489 Berlin, Germany., Köhler A; Berlin Senate Department for the Environment, Transport and Climate Protection, Am Köllnischen Park 3, Berlin 10179, Germany., Hoppe S; State Office for Health and Social Affairs (LAGeSo), Working Group Water Hygiene & Environmental Health, Turmstraße 21, 10559 Berlin, Germany., Dittmann E; Institute of Biochemistry and Biology, University of Potsdam, Karl-Liebknecht-Str. 24/25, 14476 Potsdam-Golm, Germany., Welker M; State Office for Health and Social Affairs (LAGeSo), Working Group Water Hygiene & Environmental Health, Turmstraße 21, 10559 Berlin, Germany.
Jazyk: angličtina
Zdroj: The Science of the total environment [Sci Total Environ] 2023 Feb 01; Vol. 858 (Pt 1), pp. 159433. Date of Electronic Publication: 2022 Oct 14.
DOI: 10.1016/j.scitotenv.2022.159433
Abstrakt: Fatal dog poisoning after uptake of neurotoxic cyanobacteria associated with aquatic macrophytes in Tegeler See (Berlin, Germany) raised concerns about critical exposure of humans, especially children, to cyanotoxins produced by macrophyte associated cyanobacteria during recreational activity. From 2017 to 2021 a total of 398 samples of macrophytes washed ashore at bathing sites located at 19 Berlin lakes were analysed for anatoxins, microcystins, and cylindrospermopsins, as were 463 water samples taken in direct proximity to macrophyte accumulations. Cyanotoxins were detected in 66 % of macrophyte samples and 50 % of water samples, with anatoxins being the most frequently detected toxin group in macrophyte samples (58 %) and cylindrospermopsins in water samples (41 %). Microcoleus sp. associated with the water moss Fontinalis antipyretica was identified as anatoxin producing cyanobacterium in isolated strains as well as in field samples from Tegeler See. Anatoxin contents in macrophyte samples rarely exceeded 1 μg/g macrophyte fresh weight and peaked at 9. 2 μg/g f.w. Based on established toxicological points of departure, a critical anatoxin content of macrophyte samples of 3 μg/g f.w. is proposed. Five samples, all taken in Tegeler See and all associated with the water moss Fontinalis antipyretica, exceeded this value. Contents and concentrations of microcystins and cylindrospermopsins did not reach critical levels. The potential exposure risks to anatoxins for children and dogs are assessed and recommendations are given.
Competing Interests: Declaration of competing interest The authors declare that there is no conflict of interest.
(Copyright © 2022 The Authors. Published by Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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