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Open AccessFeature PaperArticle

Bioaccumulation of Metals/Metalloids and Histological and Immunohistochemical Changes in the Tissue of the European Hake, Merluccius merluccius (Linnaeus, 1758) (Pisces: Gadiformes: Merlucciidae), for Environmental Pollution Assessment

1
Experimental Zooprophylactic Institute of Sicily “A. Mirri”, 90129 Palermo, Italy
2
Department of Biological, Geological and Environmental Science, University of Catania, 95124 Catania, Italy
3
Department of Anatomy, Biology and Genetics, Legal medicine, Neuroscience, Diagnostic Patology, Hygiene and Public Health “G.F. Ingrassia”, University of Catania, 95123 Catania, Italy
*
Author to whom correspondence should be addressed.
These authors contributed equally to the manuscript.
J. Mar. Sci. Eng. 2020, 8(9), 712; https://doi.org/10.3390/jmse8090712
Received: 5 August 2020 / Revised: 9 September 2020 / Accepted: 11 September 2020 / Published: 15 September 2020
(This article belongs to the Special Issue Coastal Fish Research)
Pollution and other types of environmental stress do not spare marine environments, especially those affected by high industrial pressure. Fish, especially coastal species, are used for monitoring the marine environment because they are particularly efficient as bioindicators thanks to their ability to bioaccumulate and biomagnify along the trophic chain. The aim of this research is to evaluate the bioaccumulation and the indirect bioindication ability of the European Hake, Merluccius merluccius (Linnaeus, 1758), one of the most important commercial fish species of the Mediterranean Sea. Morphological and histological alterations of the main target organs, such as liver and gills, have been investigated and the results showed a steatosis in the hepatic tissue. The accumulation of heavy metals has been analyzed by inductively coupled plasma mass spectrometry and for several metals it was showed a different concentration in the two sexes. Moreover, the expression of metallothioneins 1 and Heat Shock Protein 70 has been assessed by immunohistochemistry and did not show high level of expression. We underline the importance of contamination evaluation in commercial fish species and the utilization of the ichthyofauna as bioindicator of environmental quality. View Full-Text
Keywords: commercial fish species; Mediterranean Sea; environmental health; heavy metals; biomarkers commercial fish species; Mediterranean Sea; environmental health; heavy metals; biomarkers
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Salvaggio, A.; Pecoraro, R.; Copat, C.; Ferrante, M.; Grasso, A.; Scalisi, E.M.; Ignoto, S.; Bonaccorsi, V.S.; Messina, G.; Lombardo, B.M.; Tiralongo, F.; Brundo, M.V. Bioaccumulation of Metals/Metalloids and Histological and Immunohistochemical Changes in the Tissue of the European Hake, Merluccius merluccius (Linnaeus, 1758) (Pisces: Gadiformes: Merlucciidae), for Environmental Pollution Assessment . J. Mar. Sci. Eng. 2020, 8, 712.

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