Assessment of magnesium content of three fish species from three bays in northeastern Mediterranean Sea

Abstract

Magnesium (Mg) is crucial for all cells of all known living organism.  In this study, the accumulation of the magnesium in the tissues (muscle-M, skin-S, liver-L, and intestine-I) of selected fish species (Siganus rivulatus, Mullus barbatus, Solea solea) from the three bays (İskenderun, Mersin, and Antalya) locating in North-Eastern Mediterranean was examined in a comparative context. The minimum and maximum values of the Mg accumulation ( in µg g-1w.wt) in the tissues of fish were found as; S. rivulatus (150 -390), Mullus barbatus (80-310), Solea solea (170-280).  The pattern of the mean Mg accumulation among the organs for M. barbatus and S.solea from İskenderun and Mersin Bays was the same as I>L>S>M, while M. barbatus (I>S>M>L) and S. solea (L>I>M>S) from Antalya Bay were different. For S. rivulatus the pattern was almost same in three bays as I>S>M>L. Based on Discriminant Analysis (DFA) and SIMPER (Similarity Percentage), overall average dissimilarities among the fish species and bays concerning Mg accumulations were 47.37 % and 44.4 %, respectively. Patterns showed that intestine produced the most dissimilarities, while muscle the lowest. From point of view human nutrition, Mg accumulation in muscle, as an edible part of fish, was not significantly important both among fish species and bays.  

Keywords

• Mullus barbutus,Solea solea,Siganus rivulatus,Magnesium,Discriminant Analysis

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