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Mar Pollut Bull. 2018 Oct;135:1101-1106. doi: 10.1016/j.marpolbul.2018.08.037. Epub 2018 Aug 28.

Mercury concentrations in muscles and liver tissues of Cape monkfish (Lophius vomerinus) from the Northern Benguela, Namibia.

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National Marine Information and Research Centre (NatMIRC), Ministry of Fisheries and Marine Resources, Strand Street, Box 912, Swakopmund, Namibia.
Department of Fisheries and Aquatic Sciences, University of Namibia, Private Bag 462, Hentiesbay, Namibia. Electronic address:


Cape monkfish (Lophius vomerinus) is one of the long-lived species and top predators in the northern Benguela region. Studies on bioaccumulation of mercury (Hg) in cape monkfish are limited. This study compared the total Hg concentration between monkfish muscle and liver tissue; and related the monkfish total Hg concentrations to fish body size and capture locations (depth and latitude). Monkfish specimens (n = 529) were collected from 2016 to 2018. The mean total Hg concentration was 0.126 ± 0.005 mg/kg in muscle tissues and 0.106 ± 0.005 mg/kg in liver tissues. No significant differences were observed between total Hg concentrations of muscles and liver tissues. Differences in Hg concentrations between monkfish length classes were observed. No significant correlation was found between total Hg concentrations and latitude. A significant increase of total Hg concentration with the depth was observed. The concentrations of Hg were below the World Health Organization (WHO limits for fish (0.5 mg/kg).


Cape monkfish; Liver; Muscle; Tissue; Total mercury concentration

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