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A mixture of fipronil and fungicides induces alterations on behavioral and oxidative stress parameters in zebrafish.
Ecotoxicology ( IF 2.7 ) Pub Date : 2019-12-21 , DOI: 10.1007/s10646-019-02146-7
Fernanda Bevilaqua 1 , Adrieli Sachett 2 , Rafael Chitolina 2 , Cristiane Garbinato 1 , Henrique Gasparetto 1 , Matheus Marcon 2 , Ricieri Mocelin 2 , Eliane Dallegrave 3 , Greicy Conterato 4 , Angelo Piato 2 , Anna M Siebel 1
Affiliation  

Pesticide commercial mixtures, including the insecticide fipronil and the fungicides pyraclostrobin and methyl-thiophanate, have been used in concomitant pest control, facilitating agricultural management. Their widespread use can lead to soil and water contamination and potentially induce damages in the ecosystem, producing toxic effects in non-target organisms. Despite their toxicological potential, their effects on behavioral and biochemical parameters are not well understood. Here we investigated the effects of the mixture of fipronil and fungicides (MFF) pyraclostrobin and methyl- thiophanate on behavioral and biochemical parameters of oxidative stress in adult zebrafish. Animals exposed to the highest MFF tested concentration showed a decrease in the total distance traveled and in the number of crossings in the different zones of the tank. Furthermore, animals exposed to highest MFF tested concentration spent more time in water surface. In addition, our data showed that the exposure to this preparation promoted a decrease in non-protein thiol content as well as in catalase activity. Finally, pesticide exposure induced an increase in the superoxide dismutase/catalase ratio. Our results indicate that alterations in behavioral and oxidative parameters are involved in MFF toxicity in zebrafish. The antioxidant mechanisms analyzed were altered in concentrations that did not affect zebrafish behavior. Therefore, the assessment of oxidative stress parameters in zebrafish brains could be very useful to detect the early effects of environmental exposure to the MFF.

中文翻译:

氟虫腈和杀真菌剂的混合物引起斑马鱼行为和氧化应激参数的改变。

农药商业混合物,包括杀虫剂氟虫腈,杀真菌剂吡菌酯和甲基硫代甲酸酯,已被用于伴随的害虫防治,促进了农业管理。它们的广泛使用会导致土壤和水的污染,并可能在生态系统中造成破坏,对非目标生物产生毒性作用。尽管它们具有毒理学潜力,但对行为和生化参数的影响尚不十分清楚。在这里,我们研究了氟虫腈和杀真菌剂(MFF)吡咯菌酯和甲基硫氰酸甲酯的混合物对成年斑马鱼氧化应激的行为和生化参数的影响。暴露于最高MFF测试浓度的动物在坦克的不同区域的总行驶距离和穿越次数减少。此外,暴露于最高MFF测试浓度的动物在水面上花费的时间更长。另外,我们的数据表明,暴露于这种制剂会促进非蛋白质硫醇含量以及过氧化氢酶活性的降低。最后,农药接触导致超氧化物歧化酶/过氧化氢酶比率增加。我们的结果表明,行为和氧化参数的改变与斑马鱼的MFF毒性有关。所分析的抗氧化剂机理在不影响斑马鱼行为的浓度下发生了变化。因此,评估斑马鱼大脑中的氧化应激参数对于检测环境暴露于MFF的早期影响可能非常有用。我们的数据表明,暴露于该制剂可促进非蛋白质硫醇含量以及过氧化氢酶活性的降低。最后,农药接触导致超氧化物歧化酶/过氧化氢酶比率增加。我们的结果表明,行为和氧化参数的改变与斑马鱼的MFF毒性有关。所分析的抗氧化剂机理在不影响斑马鱼行为的浓度下发生了变化。因此,评估斑马鱼大脑中的氧化应激参数对于检测环境暴露于MFF的早期影响可能非常有用。我们的数据表明,暴露于该制剂可促进非蛋白质硫醇含量以及过氧化氢酶活性的降低。最后,农药接触导致超氧化物歧化酶/过氧化氢酶比率增加。我们的结果表明,行为和氧化参数的改变与斑马鱼的MFF毒性有关。所分析的抗氧化剂机理在不影响斑马鱼行为的浓度下发生了变化。因此,评估斑马鱼大脑中的氧化应激参数对于检测环境暴露于MFF的早期影响可能非常有用。我们的结果表明,行为和氧化参数的改变与斑马鱼的MFF毒性有关。所分析的抗氧化剂机理在不影响斑马鱼行为的浓度下发生了变化。因此,评估斑马鱼大脑中的氧化应激参数对于检测环境暴露于MFF的早期影响可能非常有用。我们的结果表明,行为和氧化参数的改变与斑马鱼的MFF毒性有关。所分析的抗氧化剂机理在不影响斑马鱼行为的浓度下发生了变化。因此,评估斑马鱼大脑中的氧化应激参数对于检测环境暴露于MFF的早期影响可能非常有用。
更新日期:2020-01-04
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