Abstract：
:The Iguaçu River is one of the largest and most important rivers in the Southern of Brazil. The Upper Iguaçu Basin is responsible for water supply (80%) of the Metropolitan Region of Curitiba (MRC). After crossing a large urban region, the river is polluted by domestic and industrial sewage, but despite of that few ecotoxicological studies have been performed in order to evaluate the water quality from Iguaçu River. The aim of the present study was to investigate the risk of exposure of Iguaçu water to biota and also human population. In this terms, was utilized the survival effect and the morphological deformities in larval embryos of Rhamdia quelen, a native South America species. The results showed a high level of pollution in all studied sites along the Upper Iguaçu River including PAHs and toxic metals such as lead. The lethal and non-lethal effects described in earlier stages of development suggest an elevated risk to biota. This data was corroborated by the theoretical model, showing that the pollutants present in water from Iguaçu River may further reduce the fish population density including risk of local extinction. The present study reflect the needs to conduct in-depth research to evaluate the real impact of human activities on the endemic fish biota of Iguaçu River including the risk for human populations.
journal_name
Chemospherejournal_title
Chemosphereauthors
de Andrade Brito I,Garcia JRE,Salaroli AB,Figueira RCL,de Castro Martins C,Neto AC,Gusso-Choueri PK,Choueri RB,Araujo SBL,de Oliveira Ribeiro CAdoi
10.1016/j.chemosphere.2018.05.009subject
Has Abstractpub_date
2018-10-01 00:00:00pages
207-218eissn
0045-6535issn
1879-1298pii
S0045-6535(18)30851-8journal_volume
208pub_type
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