| Concentrations of heavy metals in Sotalia fluviatilis (Cetacea: Delphinidae) off the coast of Ceará, northeast Brazil. | |
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MedLine Citation:
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PMID: 12628211 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Lead (Pb), cadmium (Cd) and mercury (Hg) concentrations on liver and kidney of Sotalia fluviatilis (Cetacea: Delphinidae) stranded in the coast of Ceará, Brazil, were studied from 1996 to 1999. Pb levels were usually lower than the detection limit (0.1 microg/g). Concentrations of Cd were significantly higher in kidney than liver, averaging 0.8 microg/g. Mercury accumulation took place mainly in liver with an average concentration of 4.6 microg/g. Both metals were significantly higher in larger mature individuals, but differences between sexes were not significant. The detection of Cd, Hg and Pb in tissue samples of S. fluviatilis off the coast of Ceará indicated that heavy metals are locally available in the water, and bioaccumulation may be occurring through the food web. Contamination levels were not considered critical, but could be related to Ceará's growing industrial development. The associated risks of pollution outfalls may pose a threat to marine organisms in a near future, especially for top predators such as S. fluviatilis. |
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Authors:
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Cassiano Monteiro-Neto; Renata Vinhas Itavo; Luiz Eduardo de Souza Moraes |
Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Environmental pollution (Barking, Essex : 1987) Volume: 123 ISSN: 0269-7491 ISO Abbreviation: Environ. Pollut. Publication Date: 2003 |
Date Detail:
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Created Date: 2003-03-11 Completed Date: 2003-07-29 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 8804476 Medline TA: Environ Pollut Country: England |
Other Details:
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Languages: eng Pagination: 319-24 Citation Subset: IM |
Affiliation:
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Departamento de Biologia Marinha, Universidade Federal Fluminense, Caixa Postal 100644, 24001-970, Niterói, RJ, Brazil. monteiro@vm.uff.br |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Animals Brazil Dolphins / metabolism* Environmental Monitoring / methods Female Food Chain Kidney / metabolism Linear Models Liver / metabolism Male Metals, Heavy / pharmacokinetics* Seawater / chemistry Water Pollutants, Chemical / pharmacokinetics* |
| Chemical | |
Reg. No./Substance:
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0/Metals, Heavy; 0/Water Pollutants, Chemical |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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