title: Metal bioaccumulation in two edible cephalopods in the Gulf of Gabes, South-Eastern Tunisia: environmental and human health risk assessment.
abstract: Samples of Octopus vulgaris and Sepia officinalis were collected from four areas in the Gulf of Gabes, south-eastern Tunisia, and their edible tissues (mantle and arms) were analyzed for cadmium, copper, mercury, and zinc. While the concentrations of metals showed significant differences between the sampling sites, no differences were revealed between the tissues of the two species. The spatial distribution of metals analyzed showed similar pattern for both tissues of the two species, with the highest concentrations found in the central area of Gabes Gulf, and the lowest in the northern and/or southern areas. From a human health risk point of view, the highest values of estimated daily intake, target hazard quotient, and hazard index were found in the central area of Gabes Gulf. Although the results of these indices were, in general, not alarming, the health risks posed by the consumption of cephalopods on local consumers cannot be excluded.
authors: Research Unit of Integrative Biology and Evolutionary and Functional Ecology of Aquatic Systems, Faculty of Science of Tunis, University of Tunis El Manar, B.P 94  Cité Rommana, University Campus, 1068, Tunis, Tunisia. lrabaoui@gmail.com.|Marine Studies Section, Center for Environment and Water, King Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabia. lrabaoui@gmail.com.
authors: Lotfi
authors: L
authors: Rabaoui
authors: Geosciences Environment Toulouse (GET), UMR 5563 CNRS/UPS/IRD/CNES, Université de Toulouse, 14 avenue Edouard Belin, 31400, Toulouse, France.
authors: Radhouan
authors: R
authors: El Zrelli
authors: Enzymes and Bioconversion Unit, National School of Engineering of Sfax, University of Sfax, Km 4 Road Soukra, 3038, Sfax, Tunisia.
authors: Rafik
authors: R
authors: Balti
authors: Research Unit of Integrative Biology and Evolutionary and Functional Ecology of Aquatic Systems, Faculty of Science of Tunis, University of Tunis El Manar, B.P 94  Cité Rommana, University Campus, 1068, Tunis, Tunisia.|Zoology Department, College of Science, King Saud University, Riyadh, Saudi Arabia.
authors: Lamjed
authors: L
authors: Mansour
authors: Geosciences Environment Toulouse (GET), UMR 5563 CNRS/UPS/IRD/CNES, Université de Toulouse, 14 avenue Edouard Belin, 31400, Toulouse, France.
authors: Pierre
authors: P
authors: Courjault-Radé
authors: CEMES-CNRS and Université de Toulouse, 29 rue J. Marvig, 31055, Toulouse, France.
authors: Nabil
authors: N
authors: Daghbouj
authors: Research Unit of Integrative Biology and Evolutionary and Functional Ecology of Aquatic Systems, Faculty of Science of Tunis, University of Tunis El Manar, B.P 94  Cité Rommana, University Campus, 1068, Tunis, Tunisia.
authors: Sabiha
authors: S
authors: Tlig-Zouari
mesh_terms: D000818:Animals; D002104:Cadmium / Q000032:analysis / Q000378:metabolism*; D049830:Cephalopoda / Q000378:metabolism*; D003300:Copper / Q000032:analysis / Q000378:metabolism; D004784:Environmental Monitoring; D005506:Food Contamination; D006801:Humans; D008628:Mercury / Q000032:analysis / Q000378:metabolism*; D018570:Risk Assessment; D014416:Tunisia; D014874:Water Pollutants, Chemical / Q000032:analysis / Q000378:metabolism; D015032:Zinc / Q000032:analysis / Q000378:metabolism
chemical_list: D014874:Water Pollutants, Chemical; D002104:Cadmium; D003300:Copper; D008628:Mercury; D015032:Zinc
keywords: Cephalopods; Estimated daily intake; Gulf of Gabes; Human health risk assessment; Target hazard quotient; Trace metals