Monitoring trace elements in Silverside (Odontesthes bonariensis) Organs from pampasic ponds, Argentina.

VAZQUEZ, F:J; F. A ARELLANO; A. V. VOLPEDO; A. FERNÁNDEZ-CIRELLI

Microchemical Journal

Elsevier

Año: 2015 vol. 120 p. 1 - 5

0026-265X

The presence of trace elements (Cr, Mn and Zn) in soft tissues (muscle, gills, scales, liver and gonads) of silverside (Odontesthes bonariensis), and its relation to the concentration of these elements, in water of the Pampasic ponds was studied. Based on the results, the risk of poisoning by consumption of silverside fish was calculated.Cr had a higher concentration in the fish scales of most ponds, being the gill the secondary target organ. The highest concentrations of manganese were found in gills, liver and fish scales. Gills and liver samples from Chascomús ponds had higher values ​​of that metal than the rest of the ponds. In the ponds of Adela, Chis-Chis, and Barrancas these concentrations were lower, 14-34 ug/g in gills and 5-9 ug/g liver. In Tablilla ponds, Mn concentration in all organs of silverside was very variable. Zn was the metal in highest concentration in all the fish organs analyzed respect the other trace elements studied. Considering the limits set by the Scientific Committe on Food (SCF), Cr of 0.03 mg/kg, 0.07 mg Mn/kg and 1.57 mg and Zn/ kg, and given a balanced diet, with a consumption of twice a week, we could observe that in none of the cases the consumption of this species can be harmful to human health.