Abstract
The present study reports the levels of mercury and selenium in Sarpa salpa and Balistes capriscus collected along the coast of Mahdia and Sfax (Tunisia). The systems constituted by S. salpa and Robphildollfusium fractum and by B. capriscus and Neoapocreadium chabaudi were tested as potential bioindicators to monitor environmental Hg pollution in marine ecosystems. Mercury and selenium concentrations were assessed in kidney, liver and muscle of 51 S. salpa and of 45 B. capriscus as well as in their respective endoparasites R. fractum and N. chabaudi. The Se:Hg molar ratios were evaluated for both species across the study areas. Surprisingly, the Se:Hg molar ratio in B. capriscus muscle from Mahdia is significantly lower than in Sfax. Our results indicate that some parasites may also be implicated in the amount of Se and Hg available in tissues and therefore contribute to oscillations of the Se:Hg molar ratios. In the model involving the carnivorous species (B. capriscus), the 5.1-times higher levels of mercury in N. chabaudi than in B. capriscus muscle in Sfax enable this fluke to be a sensitive biomonitoring tool for Hg pollution. The present results confirm that the habitual consumption of S. salpa should not suppose any potential health risk for Tunisian people. On the other hand, the consumption of B. capriscus may be of concern and further monitoring is advisable, since the Hg average concentration in Mahdia was above the maximum allowed Hg concentration in the edible portion of fish fixed by the European Union.
[1] Aksu A., Balkis N., Taşkin O.S., Erşan M.S. 2011. Toxic metal (Pb, Cd, As and Hg) and organochlorine residue levels in hake (Merluccius merluccius) from the Marmara Sea, Turkey. Environmental Monitoring and Assessment, 182, 509–521. DOI: 10.1007/s10661-011-1893-1. http://dx.doi.org/10.1007/s10661-011-1893-110.1007/s10661-011-1893-1Search in Google Scholar PubMed
[2] Burger J., Gochfeld M. 2011. Mercury and selenium levels in 19 species of saltwater fish from New Jersey as a function of species, size, and season. Science of the Total Environment, 409, 1418–1429. DOI: 10.1016/j.scitotenv.2010.12.034. http://dx.doi.org/10.1016/j.scitotenv.2010.12.03410.1016/j.scitotenv.2010.12.034Search in Google Scholar PubMed PubMed Central
[3] Burger J., Gochfeld M. 2012. Selenium and mercury molar ratios in saltwater fish from New Jersey: individual and species variability complicate use in human health fish consumption advisories. Environmental Research, 114, 12–23. DOI: 10. 1016/j.enres.2012.02.004. http://dx.doi.org/10.1016/j.envres.2012.02.00410.1016/j.envres.2012.02.004Search in Google Scholar PubMed PubMed Central
[4] Burger J., Gochfeld M. 2013. Selenium/mercury molar ratios in freshwater, marine, and commercial fish from the USA: variation, risk, and health management. Reviews on Environmental Health, 28, 129–143. DOI: 10.1515/reveh-2013-0010. http://dx.doi.org/10.1515/reveh-2013-001010.1515/reveh-2013-0010Search in Google Scholar PubMed
[5] Carvalho C.M.L., Chew E.H., Hashemy L.I., Lu J., Holmgren A. 2008. Inhibition of the human tioredoxin system — A molecular mechanism of mercury toxicity. Journal of Biological Chemistry, 283, 11913–11923. DOI: 10.1074/jbc.M710133200. http://dx.doi.org/10.1074/jbc.M71013320010.1074/jbc.M710133200Search in Google Scholar PubMed
[6] Dang F., Wang W. 2011. Antagonistic interaction of mercury and selenium in a marine fish is dependent on their chemical species. Environmental Science & Technology, 45, 3116–3122. DOI: 10.1021/es103705a. http://dx.doi.org/10.1021/es103705a10.1021/es103705aSearch in Google Scholar PubMed
[7] Dural M., Genc E., Sangun M.K., Güner Ö. 2011. Accumulation of some heavy metals in Hysterothylacium aduncum (Nematoda) and its host sea bream, Sparus aurata (Sparidae) from North-Eastern Mediterranean Sea (Iskenderum Bay). Environmental Monitoring and Assessment, 174, 147–155. DOI: 10.1007/s10661-010-1445-0. http://dx.doi.org/10.1007/s10661-010-1445-010.1007/s10661-010-1445-0Search in Google Scholar PubMed
[8] Eira C., Torres J., Miquel J., Vaqueiro J., Soares A.M.V.M., Vingada J. 2009. Trace element concentrations in Proteocephalus macrocephalus (Cestoda) and Anguillicola crassus (Nematoda) in comparison to their fish host, Anguilla anguilla in Ria de Aveiro, Portugal. Science of the Total Environment, 407, 991–998. DOI: 10.1016/j.scitotenv.2009.10.040. http://dx.doi.org/10.1016/j.scitotenv.2008.10.04010.1016/j.scitotenv.2009.10.040Search in Google Scholar PubMed
[9] Kaneko J.J., Ralston N.V.C. 2007. Selenium and mercury in pelagic fish in the central north Pacific near Hawaii. Biological Trace Element Research, 119, 242–254. DOI: 10.1007/s12011-007-8004-8. http://dx.doi.org/10.1007/s12011-007-8004-810.1007/s12011-007-8004-8Search in Google Scholar PubMed
[10] Mezghani-Chaari S., Hamza A., Hamza-Chaffai A. 2011. Mercury contamination in human hair and some marine species from Sfax coasts of Tunisia: levels and risk assessment. Environmental Monitoring and Assessment, 180, 477–487. DOI: 10. 1007/s10661-010-1800-1. http://dx.doi.org/10.1007/s10661-010-1800-110.1007/s10661-010-1800-1Search in Google Scholar PubMed
[11] Official Journal of the European Union, Commission Regulation (EC) n.1881/2006 JO L364, 20.12.2006. L364/5–L364/24. Search in Google Scholar
[12] Peterson S.A., Ralston N.V.C., Whanger P.D., Oldfield J.E., Mosher W.D. 2009a. Selenium and mercury interactions with emphasis on fish tissue. Environmental Bioindicators, 4, 318–334. DOI: 10.1080/15555270903358428. http://dx.doi.org/10.1080/1555527090335842810.1080/15555270903358428Search in Google Scholar
[13] Peterson S.A., Ralston N.V.C., Peck D.V., Van Sickle J., Robertson J.D., Spate V.L., Morris J.S. 2009b. How might selenium moderate the toxic effects of mercury in stream fish in western US? Environmental Science & Technology, 43, 3919–3925. DOI: 10.1021/es803203g. http://dx.doi.org/10.1021/es803203g10.1021/es803203gSearch in Google Scholar
[14] Pinheiro M.C.N., do Nascimento J.L.M., Silveira L.C.L., da Rocha J.B.T., Aschner M. 2009. Mercury and selenium — A review on aspects related to the health of human populations in the Amazon. Environmental Bioindicators, 4, 222–245. DOI: 10. 1080/15555270903143440. http://dx.doi.org/10.1080/1555527090314344010.1080/15555270903143440Search in Google Scholar
[15] Ralston N.V.C. 2008. Selenium health benefit values as seafood safety criteria. Eco-Heath, 5, 442–455. DOI: 10.1007/s10393-008-0202-0. 10.1007/s10393-008-0202-0Search in Google Scholar
[16] Ralston N.V.C. 2009. Introduction to 2nd issue on special topic: selenium and mercury as interactive environmental indicators. Environmental Bioindicators, 4, 286–290. DOI: 10.1080/15555270903448682. http://dx.doi.org/10.1080/1555527090344868210.1080/15555270903448682Search in Google Scholar
[17] Ralston N.V.C., Ralston C.R., Blackwell III J.L., Raymond L.J. 2008. Dietary and tissue selenium in relation to methylmercury toxicity. NeuroToxicology, 29, 802–811. DOI: 10.1016/j.neuro.2008.07.007. http://dx.doi.org/10.1016/j.neuro.2008.07.00710.1016/j.neuro.2008.07.007Search in Google Scholar
[18] Rice G., Swartout J., Mahaffey K., Schoeny R. 2000. Derivation of US EPA’s oral Reference Dose (RfD) for methylmercury. Drug and Chemical Toxicology, 23, 41–54. DOI: 10.1081/DCT-100100101. http://dx.doi.org/10.1081/DCT-10010010110.1081/DCT-100100101Search in Google Scholar
[19] Scudder B.C., Chaser L.C., Wentz D.A., Bauch N.J., Brigham M.E., Moran P.W., Krabbenhoft D.P. 2009. Mercury in fish bed sediment and water from streams across the United States, 1998–2005. US Department of Interior, Report 2009-5109. Reston, Virginia, USA, 74 pp. 10.3133/sir20095109Search in Google Scholar
[20] Serbaji M.M., Azri C., Medhioub K. 2012. Anthropogenic contributions to heavy metal distributions in the surface and sub-surface sediments of the northern coast of Sfax, Tunisia. International Journal of Environmental Research, 6, 613–626. Search in Google Scholar
[21] Sørmo E.G., Ciesielski T.M., Overjordet I.B., Lierhagen S., Eggen G.S., Berg T., Jenssen B.M. 2011. Selenium moderates mercury toxicity in free-ranging freshwater fish. Environmental Science & Technology, 45, 6561–6566. DOI: 10.1021/es 200478b. http://dx.doi.org/10.1021/es200478bSearch in Google Scholar
[22] Sures B. 2002. Competition for minerals between Acanthocephalus lucii and its definitive host pearch (Perca fluviatilis). International Journal for Parasitology, 32, 1117–1122. DOI: 10.1016/S0020-7519(02)00083-8. http://dx.doi.org/10.1016/S0020-7519(02)00083-810.1016/S0020-7519(02)00083-8Search in Google Scholar
[23] Sures B. 2003. Accumulation of heavy metals by intestinal helminths in fish: an overview and perspective. Parasitology, 126, S53–S60. DOI: 10.1017/S003118200300372X. http://dx.doi.org/10.1017/S003118200300372X10.1017/S003118200300372XSearch in Google Scholar
[24] Sures B. 2008. Environmental Parasitology. Interactions between parasites and pollutants in the aquatic environment. Parasite, 15, 434–438. http://dx.doi.org/10.1051/parasite/200815343410.1051/parasite/2008153434Search in Google Scholar
[25] Sures B., Siddall R., Taraschewski H. 1999. Parasites as accumulation indicators of heavy metal pollution. Parasitology Today, 15, 16–22. DOI: 10.1016/S0169-4758(98)01358-1. http://dx.doi.org/10.1016/S0169-4758(98)01358-110.1016/S0169-4758(98)01358-1Search in Google Scholar
[26] Türkmen M., Türkmen A., Tepe Y., Ates A., Gökkus K. 2008. Determination of metal contaminations in sea foods from Marmara, Aegean and Mediterranean seas: twelve fish species. Food Chemistry, 108, 794–800. DOI: 10.1016/j.foodchem.2007.11.025. http://dx.doi.org/10.1016/j.foodchem.2007.11.02510.1016/j.foodchem.2007.11.025Search in Google Scholar
[27] USA/EPA 1998. Report on the Peer Consultation Workshop on Selenium Aquatic Toxicity and Bioaccumulation. Office of Water, U.S. Environmental Protection Agency, Washington D.C., USA. Search in Google Scholar
[28] Usero J., Izquierdo C., Morillo J., Gracia I. 2003. Heavy metals in fish (Solea vulgaris, Anguilla anguilla and Liza aurata) from salt marshes on the southern Atlantic coast of Spain. Environment International, 29, 949–956. DOI: 10.1016/S0160-4120(03)00061-8. http://dx.doi.org/10.1016/S0160-4120(03)00061-810.1016/S0160-4120(03)00061-8Search in Google Scholar
[29] WHO 1987. Selenium. In: Environmental Health Criteria No 58. World Health Organization, Geneva, Switzerland, 306 pp. Search in Google Scholar
[30] WHO 2007. Public Health and Environment World Health Organization. WHO Document Production Services, Geneva, Switzerland. Search in Google Scholar
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