Trace elements in subantarctic false killer whale (Pseudorca crassidens) tissues, including the skin as an offshore bioindicator.

摘要: On a global scale, cetaceans are recognized well indicators of marine ecosystem health. Trace elements accumulate in their bodies and potentially constitute toxicological threat. Here, the concentrations essential Se; unknown physiological Br, Rb, Cs, Ni, Sr; pollutants arsenic, Cd, Hg, Ag were assessed skin false killer whales (Pseudorca crassidens) stranded at Estrecho de Magallanes, South America, next, tissue comparisons relationships between elemental internal tissues (liver, kidney, spleen, lung, skeletal muscle, testis) assessed. Results showed concentration variations among tissues. Selenium was found to be higher liver 398 (75) μg g-1 dry weight (DW) (standard deviation parenthesis), followed by skin. Rubidium Br testis 7.92 (0.42) 99.1 (5.4) DW, respectively, Cs muscle 0.36 (0.12) while Ni range (<0.05-0.91 DW) did not show differences Cadmium arsenic kidneys, 71.2 (17.6) 2.54 (1.77) Hg highest 1068 (234) DW. Concerning inter-tissue relationships, positive skin-to-kidney skin-to-muscle correlations observed for concentrations, also skin-to-spleen, skin-to-kidney, skin-to-testis correlations, which support its use as potential offshore biomonitor.