AI Article Synopsis
- A multidisciplinary study estimated pollution levels in the North Eastern Adriatic marine environment using isotopic analysis, metal/metalloid concentrations, and biological indicators in mussels (Mytilus galloprovincialis).
- Mussels showed metabolic stress indicated by metallothionein concentrations peaking in winter, but no significant increase in micronuclei was observed, suggesting no elevated pollution levels from sewage sludge.
- Elevated arsenic levels were linked to environmental factors like salinity and low nutrients rather than pollution, while heavy metals like copper, zinc, and lead were found at higher concentrations in the Bay of Koper compared to other local bays.
Article Abstract
A multidisciplinary approach was used to estimate the pollution level of the marine environment in the North Eastern Adriatic by measurement of the isotopic composition of carbon and nitrogen (δ(13)C, δ(15)N), metal/metalloids analyses (Fe, Cu, Zn, As, Se, Cd and Pb, including As speciation) in the Mytilus galloprovincialis, as well by using metallothioneins (MT) concentrations, micronuclei (MN) in gill cells and biological parameters (condition index and gonadosomatic index). Concentrations of MT were in the range from 44 to 175 μg g(-1) wet matter tissue and were higher at the end of the winter season. The frequency of MN did not indicate an elevated level. Sewage sludge pollution was not confirmed. Elevated As concentrations in mussel are related to salinity and low nutrients concentrations and not to pollution. Elevated concentrations of Cu, Zn and Pb were found in the Bay of Koper in comparison with the Bays of Strunjan and Piran.
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| http://dx.doi.org/10.1016/j.marpolbul.2014.09.046 | DOI Listing |
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