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Acute and chronic toxicity of pesticides on tadpoles of Physalaemus cuvieri (Anura, Leptodactylidae).
Wrubleswski, Juliana; Reichert, Francisco Wilson; Galon, Leandro; Hartmann, Paulo Afonso; Hartmann, Marilia Teresinha.
Afiliação
  • Wrubleswski J; Prefeitura Municipal de Erechim, Erechim, RS, Brazil.
  • Reichert FW; Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil.
  • Galon L; Universidade Federal da Fronteira Sul, Campus Erechim, Brazil. ERS 135 - Km 72, nº 200, Erechim, RS, Brazil.
  • Hartmann PA; Universidade Federal da Fronteira Sul, Campus Erechim, Brazil. ERS 135 - Km 72, nº 200, Erechim, RS, Brazil.
  • Hartmann MT; Universidade Federal da Fronteira Sul, Campus Erechim, Brazil. ERS 135 - Km 72, nº 200, Erechim, RS, Brazil. marilia.hartmann@gmail.com.
Ecotoxicology ; 27(3): 360-368, 2018 Apr.
Article em En | MEDLINE | ID: mdl-29397473
Brazil is the largest consumer of pesticides in the world. However, knowledge on how these pesticides affect wildlife is scarce. Among the vertebrates, amphibians are particularly important in research to assess the impact of pesticides because of the correlation between pesticide and the decline of these species. This study aimed to evaluate the acute and chronic toxicity of commercial formulations of pesticides, i.e., atrazine (herbicide), cypermethrin (insecticide), and tebuconazole (fungicide) in Physalaemus cuvieri tadpoles. Eggs were collected in nature and cultivated under controlled conditions in the laboratory. Toxicity tests were carried out under standard conditions to determine the lethal concentration (LC50) after 96 h of exposure and to determine the effect of sublethal concentrations after 7 days. In addition, we performed swimming activity tests on tadpoles exposed to sublethal concentrations. The lethal concentration (LC50) was 19.69 mg/L for atrazine, 0.24 mg/L for cypermethrin and 0.98 mg/L for tebuconazole. In the acute test, atrazine showed lower toxicity than cypermethrin and tebuconazole for P. cuvieri. Swimming activity was affected at sublethal doses of atrazine and cypermethrin, but was not after exposure to tebuconazole. Cypermethrin was the insecticide that most altered the swimming activity of the individuals tested. The risk evaluation analysis indicated risks for tadpoles exposed to three tested pesticides, specially cypermethrin.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Piretrinas / Atrazina / Triazóis / Poluentes Químicos da Água / Larva Limite: Animals Idioma: En Revista: Ecotoxicology Assunto da revista: SAUDE AMBIENTAL / TOXICOLOGIA Ano de publicação: 2018 Tipo de documento: Article País de afiliação: Brasil País de publicação: Estados Unidos
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Piretrinas / Atrazina / Triazóis / Poluentes Químicos da Água / Larva Limite: Animals Idioma: En Revista: Ecotoxicology Assunto da revista: SAUDE AMBIENTAL / TOXICOLOGIA Ano de publicação: 2018 Tipo de documento: Article País de afiliação: Brasil País de publicação: Estados Unidos