Bioaccumulation of trace metals in mussel (Mytilus galloprovincialis) from Mali Ston Bay

Vuletić, Nenad (2015) Bioaccumulation of trace metals in mussel (Mytilus galloprovincialis) from Mali Ston Bay. Doctoral thesis, Faculty of Science > Department of Chemistry.

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Abstract

The contamination of shellfish with marine biotoxins, trace metals or other contaminants is an ecological, food safety and a human health concern. The goal of the present study was determination of a positive or negative correlation of the content of trace metals (Cd, Pb, Zn, Cu, Cr and Ni) with a positive or negative diarrhetic shellfish poisoning (DSP) bioassay in shellfish tissue. The concentrations of trace metals that were bioaccumulated in the soft tissue of mussel (Mytilus galloprovincialis) were measured in this study. Mussels were collected on breeding farms in the Mali Ston Bay from seven sites from January till June 2011. In that period toxicity was recorded in the course of the official analyses of marine biotoxins under the National Monitoring Program. According to the official method for DSP toxins, the mouse bioassay test, positive results for DSP toxins were reported. In some areas, the occurrence of toxicity started in January 2011 and lasted until mid-summer, with a maximum number of DSP positive samples in June. However, other less toxic or non-toxic substances (zinc or fatty acids) can be the cause for a positive bioassay. Mussel is an organism which is able to show spatial and temporal changes in trace metals concentrations and is a suitable candidate to be used in biomonitoring surveys.

Item Type: Thesis (Doctoral thesis)
Keywords: bioaccumulation, diarrhetic shellfish poison toxins, mussel, spatial distribution, temporal distribution, trace metals
Supervisor: Ujević, Ivana and Kušpilić, Grozdan
Date: 2015
Number of Pages: 126
Subjects: NATURAL SCIENCES > Chemistry
Divisions: Faculty of Science > Department of Chemistry
Depositing User: Zdenka Kuri
Date Deposited: 08 Sep 2015 10:23
Last Modified: 08 Sep 2015 10:23
URI: http://digre.pmf.unizg.hr/id/eprint/4224

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