Title: Genotoxic effects on fish species and water quality parameters of two tributaries of the Sinos River, Southern Brazil

Authors: Thaís Dalzochio; Leonardo Airton Ressel Simões; Mateus Santos De Souza; Gabriela Zimmermann Prado Rodrigues; Lucas José Schvambach; Pablo Cesar Albornoz Lehmann; Günther Gehlen; Luciano Basso Da Silva

Addresses: Faculdade Cenecista de Bento Gonçalves, Arlindo Franklin Barbosa, 460, CEP 95700-00, Bento Gonçalves, RS, Brazil ' Universidade Federal do Rio Grande do Sul, Sarmento Leite, 500, CEP 90040-060, Porto Alegre, RS, Brazil ' Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves, 9500, CEP 90650-002, Porto Alegre, RS, Brazil ' Universidade Feevale, ERS-239, 2755, CEP 93525, Novo Hamburgo, RS, Brazil ' Universidade do Vale do Rio dos Sinos, Av. Unisinos, 950, CEP 93020-190, São Leopoldo, RS, Brazil ' Universidade do Vale do Rio dos Sinos, Av. Unisinos, 950, CEP 93020-190, São Leopoldo, RS, Brazil ' Universidade Feevale, ERS-239, 2755, CEP 93525, Novo Hamburgo, RS, Brazil ' Universidade Feevale, ERS-239, 2755, CEP 93525, Novo Hamburgo, RS, Brazil

Abstract: The integrated use of water quality parameters and the micronucleus test in fish represent a reliable tool in environmental assessment. Thus, this study aimed to evaluate water physicochemical and microbiological parameters and micronuclei (MN) and nuclear abnormalities (NA) frequencies in peripheral erythrocytes of three native fish species (Bryconamericus iheringii, Diapoma alburnus and Hyphessobrycon luetkenii) captured in the mouth of two tributaries (Ilha River and Paranhana River) of the Sinos River, Southern Brazil. Aluminium, iron and thermotolerant coliforms levels exceeded the limits established by the Brazilian legislation at both sampling sites. There were no differences in MN frequencies between sites and species; however, H. luetkenii presented higher rates of NA in comparison to D. alburnus captured in the Ilha River. Thus, this study provides the first in situ database of DNA damage for these fish species. Furthermore, water quality parameters indicate both sampling sites are under anthropic impacts.

Keywords: micronucleus; Sinos River; water quality; genotoxicity; pollution; Characiformes; fish; metals; environmental quality; Southern Brazil.

DOI: 10.1504/IJETM.2018.097916

International Journal of Environmental Technology and Management, 2018 Vol.21 No.3/4, pp.161 - 173

Available online: 13 Feb 2019 *

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