Assessment of heavy metals in Egretta thula: case study: Coroa Grande mangrove, Sepetiba Bay, Rio de Janeiro, Brazil
This study focuses on metals analysis in kidney and liver tissues of Egretta thula which were collected prostrate or newly dead in Coroa Grande mangrove, Sepetiba Bay, Rio de Janeiro, Brazil, between March 2005 and October 2008. Kidney and liver were collected and analysed to evaluate heavy metal po...
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doaj-24758b5fc24d4b2ca022ef4feb706d5f2020-11-24T20:42:21ZengInstituto Internacional de EcologiaBrazilian Journal of Biology1678-4375711778210.1590/S1519-69842011000100012S1519-69842011000100012Assessment of heavy metals in Egretta thula: case study: Coroa Grande mangrove, Sepetiba Bay, Rio de Janeiro, BrazilAP Ferreira0Fundação Oswaldo CruzThis study focuses on metals analysis in kidney and liver tissues of Egretta thula which were collected prostrate or newly dead in Coroa Grande mangrove, Sepetiba Bay, Rio de Janeiro, Brazil, between March 2005 and October 2008. Kidney and liver were collected and analysed to evaluate heavy metal pollution. High values and widest range were detected for all metals in liver and kidney tissues. Geometric mean differences from metals concentrations for Zn, Cd, Ni, Pb, Cu, and Cr, respectively, were found in both organs. Results from linear regression analysis were non-significant in kidney (r = -0.79975, P = 0.10428), and in liver (r = -0.53193, P = 0.35618). With ANOVA analysis for metal accumulation differences (kidney*liver), at the 0.05 level, the results were significantly different (F = 33.17676, P = 0.00000; F = 12.47880, P = 0.00000). These results indicate that Sepetiba Bay shows worrying levels of metals in this study with E. thula, showing potential power of widespread biological and mutagenic adverse effects in trophic levels, and therefore, signalling risk to human health.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842011000100012&lng=en&tlng=enheavy metalcontaminationSepetiba BayEgretta thula |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
AP Ferreira |
spellingShingle |
AP Ferreira Assessment of heavy metals in Egretta thula: case study: Coroa Grande mangrove, Sepetiba Bay, Rio de Janeiro, Brazil Brazilian Journal of Biology heavy metal contamination Sepetiba Bay Egretta thula |
author_facet |
AP Ferreira |
author_sort |
AP Ferreira |
title |
Assessment of heavy metals in Egretta thula: case study: Coroa Grande mangrove, Sepetiba Bay, Rio de Janeiro, Brazil |
title_short |
Assessment of heavy metals in Egretta thula: case study: Coroa Grande mangrove, Sepetiba Bay, Rio de Janeiro, Brazil |
title_full |
Assessment of heavy metals in Egretta thula: case study: Coroa Grande mangrove, Sepetiba Bay, Rio de Janeiro, Brazil |
title_fullStr |
Assessment of heavy metals in Egretta thula: case study: Coroa Grande mangrove, Sepetiba Bay, Rio de Janeiro, Brazil |
title_full_unstemmed |
Assessment of heavy metals in Egretta thula: case study: Coroa Grande mangrove, Sepetiba Bay, Rio de Janeiro, Brazil |
title_sort |
assessment of heavy metals in egretta thula: case study: coroa grande mangrove, sepetiba bay, rio de janeiro, brazil |
publisher |
Instituto Internacional de Ecologia |
series |
Brazilian Journal of Biology |
issn |
1678-4375 |
description |
This study focuses on metals analysis in kidney and liver tissues of Egretta thula which were collected prostrate or newly dead in Coroa Grande mangrove, Sepetiba Bay, Rio de Janeiro, Brazil, between March 2005 and October 2008. Kidney and liver were collected and analysed to evaluate heavy metal pollution. High values and widest range were detected for all metals in liver and kidney tissues. Geometric mean differences from metals concentrations for Zn, Cd, Ni, Pb, Cu, and Cr, respectively, were found in both organs. Results from linear regression analysis were non-significant in kidney (r = -0.79975, P = 0.10428), and in liver (r = -0.53193, P = 0.35618). With ANOVA analysis for metal accumulation differences (kidney*liver), at the 0.05 level, the results were significantly different (F = 33.17676, P = 0.00000; F = 12.47880, P = 0.00000). These results indicate that Sepetiba Bay shows worrying levels of metals in this study with E. thula, showing potential power of widespread biological and mutagenic adverse effects in trophic levels, and therefore, signalling risk to human health. |
topic |
heavy metal contamination Sepetiba Bay Egretta thula |
url |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842011000100012&lng=en&tlng=en |
work_keys_str_mv |
AT apferreira assessmentofheavymetalsinegrettathulacasestudycoroagrandemangrovesepetibabayriodejaneirobrazil |
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