Artigo

Mercury concentration in different tissues of Podocnemis unifilis (Troschel, 1848) (Podocnemididae: Testudines) from the lower Xingu River – Amazonian, Brazil

Studies using chelonians as biosentinels of environment quality or health risks associated with turtle consumption are very rare, especially in the Amazon basin. This study aims to measure Mercury levels (Hg) in muscle, liver, fat and blood of Podocnemis unifilis from the lower Xingu River, assessin...

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Autor principal: ARAUJO, Juliana de Souza
Outros Autores: GIARRIZZO, Tommaso, LIMA, Marcelo de Oliveira
Grau: Artigo
Idioma: por
Publicado em: Universidade Federal do Pará 2017
Assuntos:
Mercúrio
Podocnemis
Quelóide
Rio Xingu (Bacia do Amazonas)
Acesso em linha: http://repositorio.ufpa.br/jspui/handle/2011/8240
id ir-2011-8240
recordtype dspace
spelling ir-2011-82402017-10-16T12:27:22Z Mercury concentration in different tissues of Podocnemis unifilis (Troschel, 1848) (Podocnemididae: Testudines) from the lower Xingu River – Amazonian, Brazil Concentrações de mercúrio em diferentes tecidos de Podocnemis unifilis (Podocnemididae: Testudines) do baixo Rio Xingu – Amazônia, Brasil ARAUJO, Juliana de Souza GIARRIZZO, Tommaso LIMA, Marcelo de Oliveira Mercúrio Podocnemis Quelóide Rio Xingu (Bacia do Amazonas) Studies using chelonians as biosentinels of environment quality or health risks associated with turtle consumption are very rare, especially in the Amazon basin. This study aims to measure Mercury levels (Hg) in muscle, liver, fat and blood of Podocnemis unifilis from the lower Xingu River, assessing the possible difference in concentration between sexes and also evaluating the potential bioaccumulation along different body sizes. Samples were collected during the dry season (October 2012) and Mercury (Hg) concentrations were analysed by Cold Vapor Atomic Absorption Spectrometry (CVAAS). A total of 29 specimens of P. unifilis of different sizes showed low levels lower than 0.2 mg/Kg). Higher Hg concentrations were found in the liver, and significant correlations between Hg concentrations in the different tissues were also detected. There was no difference between males and females and a negative correlation was found between Hg concentration and body size. Estudos utilizando quelônios como biosentinelas de qualidade ambiental ou de riscos à saúde associados ao consumo de tartarugas são raros, especialmente na bacia amazônica. Neste estudo foram medidos os níveis de mercúrio no músculo, fígado, gordura e sangue de Podocnemis unifilis do baixo Rio Xingu. Foram avaliadas as possíveis diferenças de concentração entre os sexos e também o potencial de bioacumulação ao longo de diferentes tamanhos corporais. A etapa de amostragem ocorreu durante o período seco (Outubro de 2012) e a quantificação de Mercúrio (Hg) foi realizada através de digestão ácida e análises por Espectrometria de Absorção Atômica com Vapor Frio (CVAAS). Um total de 29 amostras de Podocnemis unifilis, mesmo em diferentes tamanhos, mostraram concentrações de Hg menores que 0,2 mg/kg. As concentrações mais elevadas de Hg foram encontradas no fígado, e também foram detectadas correlações significativas entre as concentrações de Hg nos tecidos. Não foram observadas diferenças significativas entre machos e fêmeas, sendo registrada correlação negativa entre a concentração de Hg e o tamanho do corpo. 2017-04-24T22:37:25Z 2017-04-24T22:37:25Z 2015-08 Artigo de Periódico ARAUJO, Juliana de Souza ; GIARRIZZO, Tommaso ; LIMA, Marcelo de Oliveira. Mercury concentration in different tissues of Podocnemis unifilis (Troschel, 1848) (Podocnemididae: Testudines) from the lower Xingu River – Amazonian, Brazil. Brazilian Journal of Biology, São Carlos, v. 75, n. 3, supl. 1, p. 106-111, ago. 2015 . Disponível em: <http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842015000500106&lng=pt&nrm=iso>. Acesso em: 24 abr. 2017. <http://dx.doi.org/10.1590/1519-6984.01514BM>. 1519-6984 http://repositorio.ufpa.br/jspui/handle/2011/8240 por Brazilian Journal of Biology Acesso Aberto application/pdf Universidade Federal do Pará Brasil UFPA
institution Repositório Institucional - Universidade Federal do Pará
collection RI-UFPA
language por
topic Mercúrio
Podocnemis
Quelóide
Rio Xingu (Bacia do Amazonas)
spellingShingle Mercúrio
Podocnemis
Quelóide
Rio Xingu (Bacia do Amazonas)
ARAUJO, Juliana de Souza
Mercury concentration in different tissues of Podocnemis unifilis (Troschel, 1848) (Podocnemididae: Testudines) from the lower Xingu River – Amazonian, Brazil
topic_facet Mercúrio
Podocnemis
Quelóide
Rio Xingu (Bacia do Amazonas)
description Studies using chelonians as biosentinels of environment quality or health risks associated with turtle consumption are very rare, especially in the Amazon basin. This study aims to measure Mercury levels (Hg) in muscle, liver, fat and blood of Podocnemis unifilis from the lower Xingu River, assessing the possible difference in concentration between sexes and also evaluating the potential bioaccumulation along different body sizes. Samples were collected during the dry season (October 2012) and Mercury (Hg) concentrations were analysed by Cold Vapor Atomic Absorption Spectrometry (CVAAS). A total of 29 specimens of P. unifilis of different sizes showed low levels lower than 0.2 mg/Kg). Higher Hg concentrations were found in the liver, and significant correlations between Hg concentrations in the different tissues were also detected. There was no difference between males and females and a negative correlation was found between Hg concentration and body size.
format Artigo
author ARAUJO, Juliana de Souza
author2 GIARRIZZO, Tommaso
LIMA, Marcelo de Oliveira
author2Str GIARRIZZO, Tommaso
LIMA, Marcelo de Oliveira
title Mercury concentration in different tissues of Podocnemis unifilis (Troschel, 1848) (Podocnemididae: Testudines) from the lower Xingu River – Amazonian, Brazil
title_short Mercury concentration in different tissues of Podocnemis unifilis (Troschel, 1848) (Podocnemididae: Testudines) from the lower Xingu River – Amazonian, Brazil
title_full Mercury concentration in different tissues of Podocnemis unifilis (Troschel, 1848) (Podocnemididae: Testudines) from the lower Xingu River – Amazonian, Brazil
title_fullStr Mercury concentration in different tissues of Podocnemis unifilis (Troschel, 1848) (Podocnemididae: Testudines) from the lower Xingu River – Amazonian, Brazil
title_full_unstemmed Mercury concentration in different tissues of Podocnemis unifilis (Troschel, 1848) (Podocnemididae: Testudines) from the lower Xingu River – Amazonian, Brazil
title_sort mercury concentration in different tissues of podocnemis unifilis (troschel, 1848) (podocnemididae: testudines) from the lower xingu river – amazonian, brazil
publisher Universidade Federal do Pará
publishDate 2017
url http://repositorio.ufpa.br/jspui/handle/2011/8240
_version_ 1832603999523569664
score 11.755432

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