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Acute toxicity of commercial atrazine in Piaractus mesopotamicus: histopathological, ultrastructural, molecular, and genotoxic evaluation. Repositório Alice
PAIVA, P. P. de; DELCORSO, M. C.; MATHEUS, V. A.; QUEIROZ, S. C. do N. de; COLLARES-BUZATO, C. B.; ARANA, S..
The aim of this work was to evaluate the sensitivity of Pacu fingerlings (Piaractus mesopotamicus) by measuring the effects of median lethal concentration (LC50) of atrazine (ATZ - 28.58 mg/L) after acute exposure (up to 96 h). The fish were exposed to the LC50 of ATZ for 96 h (28.58 mg/L) in a static system. During the experiment, the fingerlings were randomly distributed in four glass tanks (50 L) containing dechlorinated water. Four glass tanks were for the control group, and four were for the ATZ-exposed group (n=4 per glass tank), given a total number of 16 animals tested per group. The genotoxicity was evaluated by micronucleus (MN) test in erythrocytes from peripheral blood. Qualitative and semi-quantitative histopathological analyses, and also...
Tipo: Separatas Palavras-chave: Brazilian ichthyofauna; Kidney lesions; Liver lesions; Micronucleus test; Pacu; Herbicida; Toxidez; Poluição da água; Piaractus mesopotamicus; Water pollution; Atrazine; Oxidative stress; Nephrotoxicity; Hepatotoxicity.
Ano: 2017 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1080546
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Effects of atrazine on neotropical fish kidney, Piaractus mesopotamicus: a subchronical exposition and recovery assays. Repositório Alice
GIGLIO, E.; DELCORSO, M. C.; QUEIROZ, S. C. do N. de; ARANA, S..
Environmental and human health risks that atrazine may cause justified its prohibition in European Union countries since 2005, but it is widely used in Brazil and often found above permitted levels (2.0 ?g/l-1) in river basins. The aim of this study was to evaluate the effects of atrazine by toxicity and recovery assays on trunk kidney, the main target organ of this herbicide, on Piaractus mesopotamicus (pacu) to sublethal concentration (3.57 mg / l-1) and non-lethal realistic concentration (3.0 ?g/l-1). For the exposure assay 12 pacu fingerlings were kept for 30 days in glass tanks with test concentrations presented above, including the control group (0.0 ?g/l-1). The partial replacement of atrazine occurred every 72 hours with the renovation of 1/3 of...
Tipo: Separatas Palavras-chave: Atrazina; Piaractus mesopotamicus.
Ano: 2015 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1037087
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Effects of sublethal and realistic concentrations of the commercial herbicide atrazine in Pacu (Piaractus mesopotamicus): long-term exposure and recovery assays. Repositório Alice
DELCORSO, M. C.; PAIVA, P. P. de; GRIGOLETO, M. R. P.; QUEIROZ, S. C. do N. de; COLLARES-BUZATO, C. B.; ARANA, S..
Abstract: Background and Aim: The commercial formulations of the herbicide atrazine (cATZ) are widely employed in Brazilian agriculture, and, as a consequence, ATZ has been found at levels above that established by law in the river basins in Brazil. Although the toxicity of ATZ in fish is well documented, there are few studies on the recovery capacity after cATZ exposure. This work aimed to evaluate, using several biomarkers, the toxic effects of long-term exposure to the sublethal (3.57 mg/L) and nonlethal realistic (3.00 ?g/L) cATZ concentrations followed by a recovery assay, in fingerlings of a Brazilian teleost, the Piaractus mesopotamicus (pacu). Materials and Methods: Pacu fingerlings were housed in glass tanks and divided into the following...
Tipo: Artigo de periódico Palavras-chave: Brazilian ichthyofauna; Liver lesions; Kidney lesions; Recovery assay; Toxicidade; Pacu; Herbicida; Toxidez; Poluição da Água; Piaractus mesopotamicus; Herbicides; Atrazine; Genotoxicity; Histopathology; Ultrastructure.
Ano: 2020 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1124070
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