Mercury and Selenium in a Top-Predator Fish, Trichiurus lepturus (Linnaeus, 1758), from the Tropical Brazilian Coast, Rio de Janeiro
2012
Seixas, Tércia G. | Moreira, Isabel | Malm, Olaf | Kehrig, Helena A.
Muscular mercury and selenium were assessed in a voracious fish from three Brazilian coastal areas with different environmental conditions. Mercury was higher in specimens from Ilha Grande Bay (0.35 ± 0.17 μg g−1) than in cutlassfish from Guanabara Bay (0.30 ± 0.15 μg g−1) and Buzios coast (0.13 ± 0.08 μg g−1), respectively. No difference was found regarding selenium among these areas. Mercury was positively correlated with fish length and size intervals (sub-adult, small and large adult), suggesting that larger and older fish bioaccumulated more mercury. A large excess of molar selenium in relation to mercury was observed.
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