Copper, zinc, and cadmium body concentrations in Hexaplex trunculus collected from the Tunisian coast |
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Authors: | Youssef Lahbib Anwar Mleiki Ionan Marigomez Najoua Trigui El Menif |
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Affiliation: | 1. Department of Biology, Laboratory of Environment Biomonitoring, Applied and Fundamental Malacology (MAF/LBE), Faculty of Sciences of Bizerte, University of Carthage, Tunis, 7021, Tunisia 2. CBET Research Group, Research Centre for Experimental Marine Biology and Biotechnology (PIE), Zoology and Cell Biology Department, Science and Technology Faculty, University of the Basque Country (UPV/EHU), PO Box 644, 48080, Bilbao, Basque Country, Spain
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Abstract: | Copper, Zn, and Cd were analyzed in the soft tissues of the edible gastropod Hexaplex trunculus collected from seven localities along the Tunisian coast. The body concentration of these metals was significantly different depending on the gender and site. Copper and Zn varied, respectively, from 47.70 to 343.64 μg/g dry weight (dw) and 149.46 to 530.44 μg/g dw, being higher in males. Cadmium varied from 0.22 to 18.95 μg/g dw and was always higher in females. Overall, the highest concentrations of the three metals were all recorded in Gabès fishing harbor. Comparison of metal concentrations with the European standards compiled by the Food and Agriculture Organization showed that values exceeded standards in several localities. Imposex had been previously recorded in H. trunculus along the Tunisian coast; however, it does not seem to be related with Cu, Zn, and Cd pollution because the body concentration of these metals is not correlated with imposex degree. Nevertheless, interactive effects resulting from the combination of different pollutants and other stressors cannot be disregarded. |
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