Herbicide Mixtures from Usual Practice in Sugarcane Crop: Evaluation of Oxidative Stress and Histopathological Effects in the Tropical Fish Oreochromis niloticus

Sugarcane is one of the world’s most important commodities. In order to control weeds in the plantations and increase productivity, the mixing of different herbicides during spraying operations is commonplace. This practice is unregulated, and the impact on water quality and nontarget tropical speci...

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Veröffentlicht in:Water, air, and soil pollution air, and soil pollution, 2017-09, Vol.228 (9), p.1, Article 332
Hauptverfasser: Jonsson, Claudio Martin, Arana, Sarah, Ferracini, Vera Lucia, Queiroz, Sonia Claudia Nascimento, Clemente, Zaira, Vallim, José Henrique, de Holanda Nunes Maia, Aline, de Moura, Mônica Accaui Marcondes
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Sprache:eng
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Zusammenfassung:Sugarcane is one of the world’s most important commodities. In order to control weeds in the plantations and increase productivity, the mixing of different herbicides during spraying operations is commonplace. This practice is unregulated, and the impact on water quality and nontarget tropical species is poorly understood. In the present work, exposure and recovery assays were used to evaluate antioxidant enzyme activity and histopathological alterations in the liver of tilapia ( Oreochromis niloticus ) following exposure to mixtures of the herbicides widely used in sugarcane crops: ametryn (AMT), tebuthiuron (TBUT), diuron (DIU), and hexazinone (HZN). The greatest biochemical changes were observed for the mixture (DIU+HZN)+AMT+TBUT at the highest concentration tested (1/10 96hLC50). This mixture caused a significant increase ( p  
ISSN:0049-6979
1573-2932
DOI:10.1007/s11270-017-3506-2