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Effects of ecologically relevant concentrations of Boral® 500 SC, Glifosato® Biocarb, and a blend of both herbicides on markers of metabolism, stress, and nutritional condition factors in bullfrog tadpoles.
Wilkens, Anike L L; Valgas, Artur A N; Oliveira, Guendalina T.
Afiliação
  • Wilkens ALL; School of Sciences, Conservation Physiology Laboratory, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, Brazil.
  • Valgas AAN; PPG-Ecology and Evolution of Biodiversity, Porto Alegre, Brazil.
  • Oliveira GT; School of Sciences, Conservation Physiology Laboratory, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, Brazil.
Environ Sci Pollut Res Int ; 26(23): 23242-23256, 2019 Aug.
Article em En | MEDLINE | ID: mdl-31190300
The aim of this study was to verify the effects of the isolated forms of Boral® SC 500, Glifosato® Biocarb herbicides, and a blend of both herbicides on metabolism and oxidative balance markers of Rana catesbeiana tadpoles and on their nutritional condition. Groups of tadpoles were divided into different treatments: control (no herbicides), Boral® 500 SC (sulfentrazone: 130 µg/L), Glifosato® Biocarb (glyphosate: 234 µg/L), and a blend of both herbicides. After 7 days, the liver, caudal muscle, and blood samples were taken to subsequently perform the biomarkers determination by spectrophotometry. The intestinal condition factor increased in animals exposed to glyphosate and herbicide blends, suggesting a hyperphagic effect. This hypothesis was confirmed by the rise of triglycerides and circulating very low-density lipoprotein (VLDL). There was a significant increase in the levels of uric acid in tadpoles exposed to the herbicide blend. Corticosterone levels reduced significantly in animals exposed to glyphosate and the herbicide blend. Oxidative stress markers had a tissue-dependent response. In the liver, glutathione S-transferase increased, and superoxide dismutase and catalase decreased in animals exposed to sulfentrazone and glyphosate. Lipoperoxidation was reduced in the glyphosate treatment. In the caudal muscle, superoxide dismutase and catalase activities were maintained, and there was a decline in the levels of glutathione S-transferase and TBARS only in the blend group.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Sulfonamidas / Triazóis / Poluentes Químicos da Água / Estresse Oxidativo / Glicina / Herbicidas / Larva Limite: Animals Idioma: En Revista: Environ Sci Pollut Res Int Assunto da revista: SAUDE AMBIENTAL / TOXICOLOGIA Ano de publicação: 2019 Tipo de documento: Article País de afiliação: Brasil País de publicação: Alemanha

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Sulfonamidas / Triazóis / Poluentes Químicos da Água / Estresse Oxidativo / Glicina / Herbicidas / Larva Limite: Animals Idioma: En Revista: Environ Sci Pollut Res Int Assunto da revista: SAUDE AMBIENTAL / TOXICOLOGIA Ano de publicação: 2019 Tipo de documento: Article País de afiliação: Brasil País de publicação: Alemanha