Elemental distribution in the different tissues of brood stock from Greek hatcheries
2019
Kalantzi, Ioanna | Mylona, Kyriaki | Pergantis, Spiros A. | Coli, Antonio | Panopoulos, Sokratis | Tsapakis, Manolis
The distribution of twenty-four metals and elements in the tissues and organs of brood stock European seabass (Dicentrarchus labrax) was investigated. Muscle, liver, kidney, gills, bone, scales, gonads, otoliths and stomach were dissected from seabass brood stock from hatcheries in different sites in Greece, Eastern Mediterranean. The tissues and organs were clearly different depending on their metal and element content, except for bone and scales. The concentrations of most metals and elements were higher in the liver, kidney, bone and scales compared to the other body tissues and organs. Liver and kidney are the main detoxifying tissues of fish. Bone and scales accumulate the essential elements for the physiological function of the organisms. Muscle and otoliths accumulated the lowest concentrations of most metals and elements compared to the other tissues due to their low metabolic activity. However, the content of a few metals and elements was higher in gills, scales and stomach. Thus, it seems that the accumulation of metals and elements is tissue/ organ-specific and depends mainly on the biological role and activity of each tissue and the exposure pathway as well as on the chemistry of each element.
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