Effects of atrazine, diuron and glyphosate mixtures on zebrafish embryos : acute toxicity and oxidative stress responses

© 2024. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.

Bibliographische Detailangaben
Veröffentlicht in:Ecotoxicology (London, England). - 1992. - (2024) vom: 29. Nov.
1. Verfasser: Maia, Maria Eduarda (VerfasserIn)
Weitere Verfasser: Martins, Rafael Xavier, Carvalho, Matheus, Félix, Luís M, Marques-Santos, Luis Fernando, Farias, Davi
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2024
Zugriff auf das übergeordnete Werk:Ecotoxicology (London, England)
Schlagworte:Journal Article Emerging contaminants Pesticide mixture ROS Synergistic effect Water pollution
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520 |a Synthetic pesticides are known for their toxic effects on non-target aquatic organisms. However, little is known about their effects when present in mixtures, which are closer to realistic exposure scenarios. Therefore, this study evaluates the toxicity of pesticides such as diuron, atrazine and glyphosate, individually and in combination, in zebrafish embryos, investigating their mechanisms of oxidative stress. The results revealed acute toxicity for diuron and atrazine, with LC50 values of 9.6 mg/L and 53.57 mg/L for 96-h-old zebrafish, respectively. On the other hand, no effect was observed for glyphosate alone at the maximum concentration tested (100 mg/L). The mixture of diuron and atrazine showed a synergistic effect, resulting in a decrease in the LC50 of each pesticide. Mixtures of diuron + glyphosate and atrazine + glyphosate were considered additive and antagonistic, respectively. All biomarkers analyzed (AChE, LDH, GST, CAT and GPx) showed significant changes. Furthermore, an increase in ROS production was observed in larvae exposed to individual and in the mixture composed of atrazine and diuron. These findings indicate that atrazine and diuron exhibit increased toxicity when combined, with their mechanisms of action-both in isolation and in mixtures-being at least partially linked to oxidative stress 
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650 4 |a Emerging contaminants 
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650 4 |a ROS 
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700 1 |a Martins, Rafael Xavier  |e verfasserin  |4 aut 
700 1 |a Carvalho, Matheus  |e verfasserin  |4 aut 
700 1 |a Félix, Luís M  |e verfasserin  |4 aut 
700 1 |a Marques-Santos, Luis Fernando  |e verfasserin  |4 aut 
700 1 |a Farias, Davi  |e verfasserin  |4 aut 
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