Mercury Organotropism in Feral European Sea Bass (Dicentrarchus labrax)

The knowledge of mercury (Hg) burdens in a wide set of tissues and organs of exposed fish is crucial to understand the internal distribution dynamics and thus predict Hg bioavailability and implications for ecosystem and human health. Total Hg was measured in six tissues of Dicentrarchus labrax capt...

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Bibliographic Details
Published in:Archives of environmental contamination and toxicology 2011-07, Vol.61 (1), p.135-143
Main Authors: Mieiro, Cláudia Leopoldina, Pacheco, Mário, Pereira, Maria Eduarda, Duarte, Armando Costa
Format: Article
Language:English
Subjects:
Analysis
Animal and plant ecology
Animal, plant and microbial ecology
Animals
Applied ecology
Aquaculture
Asymptotic methods
Bass - metabolism
Bioavailability
Biological and medical sciences
Brain
Cellulose acetate
Contamination
Dicentrarchus labrax
Earth and Environmental Science
Ecotoxicology
Ecotoxicology, biological effects of pollution
Environment
Environmental Chemistry
Environmental Health
Fish
Fundamental and applied biological sciences. Psychology
General aspects
Kidneys
Laboratories
Liver
Mercury
Mercury - analysis
Mercury - metabolism
Mercury Compounds - analysis
Mercury Compounds - metabolism
Monitoring/Environmental Analysis
Muscles
Organs
Pollution
Portugal
Scientific imaging
Sea water ecosystems
Sediments
Soil Science & Conservation
Speciation
Studies
Synecology
Water Pollutants, Chemical - analysis
Water Pollutants, Chemical - metabolism
Water pollution
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Description
Summary:The knowledge of mercury (Hg) burdens in a wide set of tissues and organs of exposed fish is crucial to understand the internal distribution dynamics and thus predict Hg bioavailability and implications for ecosystem and human health. Total Hg was measured in six tissues of Dicentrarchus labrax captured along an estuarine contamination gradient, revealing the following pattern: liver > kidney > muscle > brain ≈ gills > blood. All of the tissues displayed intersite differences, although brain and muscle seemed to better reflect the extent of contamination. Hg speciation showed that liver presented higher concentrations than muscle for both organic and inorganic forms. Furthermore, liver seemed to exert a protective action in relation to Hg accumulation in the other tissues and organs. This protection seems to be particularly marked in relation to the brain, whereas liver is assisted in that action by kidney and muscle.
ISSN:0090-4341
1432-0703
DOI:10.1007/s00244-010-9591-5