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Resumen del producto
Bergés-Tiznado, M.E., F., Márquez-Farías, R., Lara-Mendoza, Y., Torres-Rojas, F., Galván-Magaña, H., Bojorquéz-Leyva & F., Páez-Osuna
(2015).
Mercury and selenium in muscle and target organs of Scalloped hammerhead sharks Sphyrna lewini of the SE Gulf of California: dietary intake, molar ratios, loads and human health risks.
Archives of Environmental Contamination and Toxicology.
69(4): 440-452.
DOI: 10.1007/s00244-015-0226-8.
Mercury and selenium in muscle and target organs of Scalloped hammerhead sharks Sphyrna lewini of the SE Gulf of California: dietary intake, molar ratios, loads and human health risks
Magdalena E. Bergés-Tiznado, Fernando Márquez-Farías, Raul Lara-Mendoza, Yassir Torres-Rojas, Felipe Galván-Magaña, Humberto Bojorquéz-Leyva y Federico Páez-Osuna
Selenium and mercury were evaluated in muscle, liver, kidney, brain, and the stomach contents of juvenile scalloped hammerhead shark Sphyrna lewini. Se:Hg molar ratios were calculated. The average Hg levels in muscle ranged from 0.12 to 1.17 lg/g (wet weight); Hg was .39 lg/g in liver and kidneys and .19 lg/g in brain. The lowest value of Se was found in muscle (0.4 lg/g) and the highest in kidney (26.7 lg/g). An excess of Se over Hg was found, with Se:Hg molar ratios[1. Correlations were found for Hg in muscle with size, age, and weight, and also for Hg in liver with size, age, and weight. Hg in muscle was significantly positive correlated to Hg in brain as well as Hg in liver was correlated to Hg in kidney. The highest Hg in preys was for carangid fishes; scombrid and carangid fishes contributed with the highest Se levels
Palabras clave: Mercury; Selenium; hammerhead shark
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