Metal Contaminants in Fish: Blood as a Potential Non-lethal Monitoring Tool

The use of fish to monitor metal contamination is well established, but existing studies often focus on internal tissues that require the sacrifice of organisms. Developing non-lethal methods is thus a scientific challenge to enable large scale biomonitoring of wildlife health. We explored blood as...

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Bibliographic Details
Published in:Bulletin of environmental contamination and toxicology 2023-07, Vol.111 (1), p.12-12, Article 12
Main Authors: Gouthier, Laurine, Jacquin, Lisa, Giraud, Jules, Jean, Séverine, Hansson, Sophia V.
Format: Article
Language:English
Subjects:
Aquatic Pollution
Bile
Biomonitoring
Cadmium
Centrifugation
Chromium
Contaminants
Contamination
Copper
Earth and Environmental Science
Ecotoxicology
Environment
Environmental Chemistry
Environmental Health
Environmental Sciences
Erythrocytes
Fish
Gonads
Lead
Metals
Muscles
Pollution
Sample preparation
Selenium
Soil Science & Conservation
Waste Water Technology
Water Management
Water Pollution Control
Wildlife
Yard waste
Zinc
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Summary:The use of fish to monitor metal contamination is well established, but existing studies often focus on internal tissues that require the sacrifice of organisms. Developing non-lethal methods is thus a scientific challenge to enable large scale biomonitoring of wildlife health. We explored blood as a potential non-lethal monitoring tool for metal contamination in brown trout ( Salmo trutta fario ) as a model species. First, we investigated differences in metal contamination loads (i.e., Cr, Cu, Se, Zn, As, Cd, Pb and Sb) in different blood components (whole blood, red blood cells and plasma). Whole blood was reliable to measure most metals, implying that blood centrifugation is not necessary, thus minimizing sample preparation time. Second, we measured the within individual distribution of metals across tissues (whole blood, muscle, liver, bile, kidney and gonads) to test if blood could be a reliable monitoring tool compared to other tissues. Results show that the whole blood was reliable compared to muscle and bile to measure the levels of metals such as Cr, Cu, Se, Zn, Cd and Pb. This study opens the possibility for future ecotoxicological studies in fish to use blood instead of internal tissues to quantify some metals, thus reducing the negative impacts of biomonitoring on wildlife.
ISSN:0007-4861
1432-0800
DOI:10.1007/s00128-023-03762-0