Multi-Toxin Occurrences in Ten French Water Resource Reservoirs.
Toxins (Basel)
; 10(7)2018 07 09.
Article
em En
| MEDLINE
| ID: mdl-29987192
ABSTRACT
Cyanobacteria are known to produce a wide array of metabolites, including various classes of toxins. Among these, hepatotoxins (Microcystins), neurotoxins (Anatoxin-A and PSP toxins) or cytotoxins (Cylindrospermopsins) have been subjected to numerous, individual studies during the past twenty years. Reports of toxins co-occurrences, however, remain scarce in the literature. The present work is an inventory of cyanobacteria with a particular focus on Nostocales and their associated toxin classes from 2007 to 2010 in ten lakes used for drinking water production in France. The results show that potential multiple toxin producing species are commonly encountered in cyanobacteria populations. Individual toxin classes were detected in 75% of all samples. Toxin co-occurrences appeared in 40% of samples as two- or three-toxin combinations (with 35% for the microcystinsâ»anatoxin combination), whereas four-toxin class combinations only appeared in 1% of samples. Toxin co-occurrences could be partially correlated to species composition and water temperature. Peak concentrations however could never be observed simultaneously and followed distinct, asymmetrical distribution patterns. As observations are the key for preventive management and risk assessment, these results indicate that water monitoring should search for all four toxin classes simultaneously instead of focusing on the most frequent toxins, i.e., microcystins.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Toxinas Bacterianas
/
Poluentes da Água
/
Lagos
/
Cianobactérias
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Citotoxinas
/
Neurotoxinas
Tipo de estudo:
Risk_factors_studies
País/Região como assunto:
Europa
Idioma:
En
Revista:
Toxins (Basel)
Ano de publicação:
2018
Tipo de documento:
Article
País de afiliação:
França