title: Heavy Metals and Histopathological Alterations in Salminus franciscanus (Lima & Britski, 2007) (Pisces: Characiformes) in the Paraopeba River, Minas Gerais, Brazil.
abstract: Cu, Pb, Cd, Zn, Cr, Hg, and Fe in the liver, spleen and muscle, of the fish Salminus franciscanus, from two sections of Paraopeba River, highly affected by anthropogenic influences, was detected in levels above those recommended for human consumption. Positive correlations between fish size and levels of metals were detected for Cd, Pb, Hg, and Zn. In the livers, areas with lipid accumulation and pigmented macrophages were also observed, as was fibrosis of the spleen in the parenchymal area through the presence of pigmented macrophages. The diameter of vitellogenic follicles was less and the frequency of atresia was higher in fish from section A. Thus, our study showed that beyond the risk to the population that eats S. franciscanus from the Paraopeba River, we should also consider the risk to the conservation of this species, since histopathological changes were detected in target organs and in some reproductive parameters.
authors.affiliation: Programa de Pós-Graduação em Biologia de Vertebrados, Pontifícia Universidade Católica de Minas Gerais, Minas Gerais, Brazil.
authors.forename: Lourenço Almeida
authors.initials: LA
authors.lastname: Savassi
authors.affiliation: Programa de Pós-Graduação em Biologia de Vertebrados, Pontifícia Universidade Católica de Minas Gerais, Minas Gerais, Brazil.
authors.forename: Fabio Pereira
authors.initials: FP
authors.lastname: Arantes
authors.affiliation: Centro Integrado de Recursos Pesqueiros e Aquicultura de Três Marias, CODEVASF, Minas Gerais, Brazil.
authors.forename: Marcos Vinicius Teles
authors.initials: MV
authors.lastname: Gomes
authors.affiliation: Programa de Pós-Graduação em Biologia de Vertebrados, Pontifícia Universidade Católica de Minas Gerais, Minas Gerais, Brazil. bazzoli@pucminas.br.
authors.forename: Nilo
authors.initials: N
authors.lastname: Bazzoli
mesh_terms: D000818:Animals; D001938:Brazil; D060125:Characiformes; D004784:Environmental Monitoring / Q000379:methods; D005355:Fibrosis; D006801:Humans; D008099:Liver / Q000737:chemistry / Q000473:pathology*; D019216:Metals, Heavy / Q000032:analysis* / Q000633:toxicity; D009132:Muscles / Q000737:chemistry / Q000473:pathology*; D045483:Rivers / Q000737:chemistry*; D013154:Spleen / Q000737:chemistry / Q000473:pathology*; D014874:Water Pollutants, Chemical / Q000032:analysis* / Q000633:toxicity
chemical_list: D019216:Metals, Heavy; D014874:Water Pollutants, Chemical
keywords: Aquatic pollution; Contamination; Human risk; Teleost; Trace-elements