Metals concentration and bioaccumulation in the marine-coastal trophic web from Buenos Aires province southern coast, Argentina

VILCHES, FLORENCIA ORNELA; BOBINAC, M. A.; LABUDÍA, A. C.; PASO VIOLA, M. N.; MARCOVECCHIO, J. E.; CAPPOZZO, H. L.; PANEBIANCO, M. V.

CHEMISTRY AND ECOLOGY

TAYLOR & FRANCIS LTD

Año: 2019 vol. 35 p. 501 - 523

0275-7540

Metals accumulated in the tissues of organisms inhabiting marineecosystems generally reflect their bioavailable levels within thatenvironment. The aim of this work was to study the presence andconcentration of metals (Cd, Cr, Cu, Fe, Ni, Pb and Zn) and itsbioaccumulation in liver-ink sac (n = 12) and muscle (n = 12)tissues of loliginid squids, Loligo sanpaulensis, in liver (n = 15) andmuscle (n = 15) tissues of white croakers, Micropogonias furnieri,and in muscle (n = 12) tissues of franciscana dolphins, Pontoporiablainvillei, as representatives of different trophic levels of anestuarial ecosystem from the southern coast of Buenos Aires.Except for Pb, all metals were detectable in the hepatic tissues.Bioaccumulation was observed for Fe, Cr and Ni in muscle ofsquids. Zn levels in muscle samples increased with the trophiclevel of the species analysed. Necochea-Quequén presentsrelatively high levels of Ni and Cr in the tissue samples of squidsand fishes given other locations of southern hemisphere,indicating a possible anthropic enrichment. These outcomesprovide the necessary basis for the environmental monitoring ofan area with relevance for fishing and high anthropic activity.