Author(s): Pignati, Marina Te?filo ; Souza, Larissa Costa de ; Mendes, Rosivaldo de Alc?ntara ; Lima, Marcelo de Oliveira ; Pignati, Wanderlei Antonio ; Pezzuti, Juarez Carlos Brito
Date: 2018
Origin: Oasisbr
Subject(s): Praguicidas / toxicidade; Inseticidas Organoclorados / an?lise; Agroqu?micos / toxicidade; R?pteis / anatomia & histologia; Cromatografia Gasosa / m?todos; Podocnemis unifilis; Tracaj?; Rio Xingu (PA)
Universidade Federal do Par?. Programa de P?s-gradua??o em Zoologia. Bel?m, PA, Brasil / Museu Paraense Em?lio Goeldi. Coordena??o de Zoologia. Bel?m, PA, Brasil.
Minist?rio da Sa?de. Secretaria de Vigil?ncia em Sa?de. Instituto Evandro Chagas. Laborat?rio de Toxicologia. Ananindeua, PA, Brasil.
Minist?rio da Sa?de. Secretaria de Vigil?ncia em Sa?de. Instituto Evandro Chagas. Laborat?rio de Toxicologia. Ananindeua, PA, Brasil.
Minist?rio da Sa?de. Secretaria de Vigil?ncia em Sa?de. Instituto Evandro Chagas. Laborat?rio de Toxicologia. Ananindeua, PA, Brasil.
Universidade Federal de Mato Grosso. Instituto de Sa?de Coletiva. Cuiab?, MT, Brazil.
Universidade Federal do Par?. N?cleo de Altos Estudos Amaz?nicos. Bel?m, PA, Brazil.
Due to the toxicity and high environmental persistence of organochlorine pesticides in aquatic organisms, turtles have been studied as environment biomonitors. These animals are important sources of protein for the riverside and indigenous peoples of the Brazilian amazon. In the present study, organochlorine pesticide contamination was investigated in Podocnemis unifilis. Liver, muscle and fatty tissue samples were removed from 50 specimens collected from five sampling points located in the Xingu River basin. Fourteen organochlorine pesticides were analysed via gas chromatography with an electron capture detector (CG-ECD). Eight organochlorine pesticides were detected with average concentrations of ?DDT, ?Endossulfan and ?HCH which were 26.17???26.35, 14.38???23.77 and 1.39???8.46?ng g?1 in moisture content, respectively. DDT compounds were the most predominant, with a greater concentration of pp?-DDT in the liver and pp?-DDD in the muscle. Significant differences were noted between the types of tissues studied, and the concentration of OCPs varied between sampling sites.
