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Trace metals in target tissues and stomach contents of the top predator sailfish Istiophorus platypterus from the Eastern Pacific: concentrations and contrasting behavior of biomagnification

Author:
Moreno-Sierra, Dalia, Bergés-Tiznado, Magdalena E., Márquez-Farías, Fernando, Torres-Rojas, Yassir E., Ruelas-Inzunza, Jorge R., Páez-Osuna, Federico
Source:
Environmental science and pollution research international 2016 v.23 no.23 pp. 23791-23803
ISSN:
0944-1344
Subject:
Cephalopoda, European Union, Istiophorus platypterus, World Health Organization, bioaccumulation, cadmium, copper, fish, lead, liver, muscles, stomach, tissues, zinc
Abstract:
Cadmium, lead, copper, and zinc were analyzed in the dorsal muscle, liver, gonad, and stomach contents of 67 sailfish, Istiophorus platypterus, from the Eastern Pacific. Muscle exhibited the following pattern (μg/g wet weight): Zn (15.05 ± 1.24) > Cu (0.461 ± 0.026) > Cd (0.434 ± 0.099) > Pb (0.025 ± 0.001); liver Zn (119.1 ± 7.6) > Cd (95.1 ± 11.0) > Cu (39.7 ± 2.6) > Pb (0.047 ± 0.004); and gonad Zn (96.8 ± 7.8) > Cd (2.16 ± 0.38) > Cu (2.08 ± 0.14) > Pb (0.033 ± 0.003). Significant (p < 0.05) correlations were observed between elements, length, and weight. I. platypterus feed mainly on fishes and cephalopods with variable concentrations (μg/g wet weight) of Cd (0.081–11.41), Pb (0.002–0.057), Cu (0.204–4.35), and Zn (3.23–86.6). Of the four analyzed elements, only Pb was biomagnified (BMF = 1.85). According to the regulatory limits, muscle exhibited Cd concentrations higher than the Official Mexican Standard, WHO, FDA (28 % of samples), and the European Union (40 %) regulations.
Agid:
5697109