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Using native fish in eco-genotoxic assessment of heavy metal contamination pollution arising from nearby large Brazilian rivers.
de Mendonça Francisco, Carine; Pavanin, Luiz Alfredo; Morelli, Sandra; Bravo, João Vitor M; Pereira, Boscolli Barbosa.
Afiliação
  • de Mendonça Francisco C; Institute of Biotechnology, Umuarama Campus, Avenida Pará, Federal University of Uberlândia, Uberlândia, Minas Gerais, Brazil.
  • Pavanin LA; Institute of Chemistry, Federal University of Uberlândia, Uberlândia, Minas Gerais, Brazil.
  • Morelli S; Institute of Biotechnology, Umuarama Campus, Avenida Pará, Federal University of Uberlândia, Uberlândia, Minas Gerais, Brazil.
  • Bravo JVM; Institute of Geography, Santa Mônica Campus, Avenida João Naves de Ávila, Federal University of Uberlândia, Uberlândia, Minas Gerais, Brazil.
  • Pereira BB; Institute of Biotechnology, Umuarama Campus, Avenida Pará, Federal University of Uberlândia, Uberlândia, Minas Gerais, Brazil.
J Toxicol Environ Health A ; 86(2-3): 74-85, 2023 02 01.
Article em En | MEDLINE | ID: mdl-36628475
Worldwide water quality has declined progressively due to continuous pollution of aquatic resources by agrochemicals in particular heavy metals. Fish genotoxicity biomarkers are vital to identify and complement chemical parameters for determining environmental risk of adverse effects. Therefore, it was of interest to examine the eco-genotoxicity attributed to water pollution over different stream sections of Brazilian rivers by using Cichlasoma paranaense (Teleostei: Cichlidae), a neotropical freshwater cichlid fish, as a biological model. Chemical analysis of water and sediments collected from different Brazilian rivers sites demonstrated contamination by metals. Cichlasoma paranaense were collected at a reference location (a permanent water preservation area), maintained in the lab under standard conditions (controlled temperature, lighting, daily feeding, and constant aeration) and exposed to environmental samples of water and sediments. Subsequently, micronucleus (MN) and nuclear abnormalities (NA) frequencies were assessed in erythrocytes obtained from the caudal and gill regions. The highest concentrations of Cu were found in samples from river sites with forest fragmentation attributed to intensive agriculture practices. Similarly, exposure of fish to samples from agricultural areas induced significantly higher number of genotoxic effects. There was no marked difference between the tissues (tail and gill) regarding the observed frequencies of MN and NA. Thus C. paranaense fish served as a reliable model for detecting genotoxic effects, especially when water samples were collected near the discharge of agrochemicals. Evidence indicates that this method be considered for other global river sites which are also exposed to agrochemicals discharges containing Cu.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Poluentes Químicos da Água / Metais Pesados Limite: Animals País/Região como assunto: America do sul / Brasil Idioma: En Revista: J Toxicol Environ Health A Assunto da revista: SAUDE AMBIENTAL / TOXICOLOGIA Ano de publicação: 2023 Tipo de documento: Article País de afiliação: Brasil País de publicação: Reino Unido
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Poluentes Químicos da Água / Metais Pesados Limite: Animals País/Região como assunto: America do sul / Brasil Idioma: En Revista: J Toxicol Environ Health A Assunto da revista: SAUDE AMBIENTAL / TOXICOLOGIA Ano de publicação: 2023 Tipo de documento: Article País de afiliação: Brasil País de publicação: Reino Unido