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 | Acesso ao texto completo restrito à biblioteca da Embrapa Meio Ambiente. Para informações adicionais entre em contato com cnpma.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Meio Ambiente. |
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Data corrente: |
12/12/2017 |
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Data da última atualização: |
24/02/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
JONSSON, C. M.; ARANA, S.; FERRACINI, V. L.; QUEIROZ, S. C. do N. de; CLEMENTE, Z.; VALLIM, J. H.; MAIA, A. de H. N.; MOURA, M. A. M. de. |
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Afiliação: |
CLAUDIO MARTIN JONSSON, CNPMA; SARAH ARANA, IB-UNICAMP; VERA LUCIA FERRACINI, CNPMA; SONIA CLAUDIA DO N DE QUEIROZ, CNPMA; ZAIRA CLEMENTE, IB-UNICAMP; JOSE HENRIQUE VALLIM, CNPMA; ALINE DE HOLANDA NUNES MAIA, CNPMA; MONICA ACCAUI MARCONSDE DE MOURA, IB-Campinas. |
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Título: |
Herbicide mixtures from usual practice in sugarcane crop: evaluation of oxidative stress and histopathological effects in the tropical fish Oreochromis niloticus. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
Water, Air, & Soil Pollution, v. 228, n. 11, article 332, 2017. |
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ISSN: |
1573-2932 |
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DOI: |
10.1007/s11270-017-3506-2 |
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Idioma: |
Inglês |
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Conteúdo: |
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 < 0.01) of approximately 82% in GST activity after 14 days of exposure. For three of the mixtures evaluated, GST and CAT could be considered potential biochemical biomarkers of exposure to the herbicide mixtures due to the frequency, intensity, and statistical significance of alterations in the assimilation phase. Although morphological changes were evident in the hepatic tissue, severe damage was only noted in a few samples, and there were no statistically significant differences, relative to the control. The results of hepatic lesion recovery assays suggested that the most sensitive individuals affected by the xenobiotics were unable to achieve full recovery. It is anticipated that the data obtained may assist in the selection of biomarkers for monitoring purposes, as well as in reinforcing standards of conduct in the use of agrochemical mixtures in agriculture. MenosSugarcane 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 < 0.01) of approximately 82% in GST activity after 14 days of exposure. For three of the mixtures evaluated, GST and CAT could be considered potential biochemical biomarkers of exposure to the herbicide mixtures due to the frequency, intensity, and statistical significance of alterations in the assimilation phase. Although morphological changes were evident in the hepatic tissue, severe damage was only noted in a few samples, and there were no statistically significant differences, relative to the control. The results of hepatic lesion recovery assays suggested that the most sensitive individuals affected by the xenobiotics were unable to achieve full ... Mostrar Tudo |
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Palavras-Chave: |
Antioxidant enzymes; Histopathological biomarkers; Long-term assay. |
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Thesagro: |
Cana de açúcar; Herbicida; Oreochromis Niloticus; Tilápia nilótica; Toxidez. |
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Thesaurus Nal: |
Biomarkers; Hepatotoxicity; Nontarget organisms; Oxidative stress; Pesticide mixtures; Sugarcane. |
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Categoria do assunto: |
-- |
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Marc: |
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022 $a1573-2932
024 7 $a10.1007/s11270-017-3506-2$2DOI
100 1 $aJONSSON, C. M.
245 $aHerbicide mixtures from usual practice in sugarcane crop$bevaluation of oxidative stress and histopathological effects in the tropical fish Oreochromis niloticus.$h[electronic resource]
260 $c2017
520 $aSugarcane 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 < 0.01) of approximately 82% in GST activity after 14 days of exposure. For three of the mixtures evaluated, GST and CAT could be considered potential biochemical biomarkers of exposure to the herbicide mixtures due to the frequency, intensity, and statistical significance of alterations in the assimilation phase. Although morphological changes were evident in the hepatic tissue, severe damage was only noted in a few samples, and there were no statistically significant differences, relative to the control. The results of hepatic lesion recovery assays suggested that the most sensitive individuals affected by the xenobiotics were unable to achieve full recovery. It is anticipated that the data obtained may assist in the selection of biomarkers for monitoring purposes, as well as in reinforcing standards of conduct in the use of agrochemical mixtures in agriculture.
650 $aBiomarkers
650 $aHepatotoxicity
650 $aNontarget organisms
650 $aOxidative stress
650 $aPesticide mixtures
650 $aSugarcane
650 $aCana de açúcar
650 $aHerbicida
650 $aOreochromis Niloticus
650 $aTilápia nilótica
650 $aToxidez
653 $aAntioxidant enzymes
653 $aHistopathological biomarkers
653 $aLong-term assay
700 1 $aARANA, S.
700 1 $aFERRACINI, V. L.
700 1 $aQUEIROZ, S. C. do N. de
700 1 $aCLEMENTE, Z.
700 1 $aVALLIM, J. H.
700 1 $aMAIA, A. de H. N.
700 1 $aMOURA, M. A. M. de
773 $tWater, Air, & Soil Pollution$gv. 228, n. 11, article 332, 2017.
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