Mercury and Polychlorinated Biphenyls in Zooplankton and Shrimp from the Barents Sea and the Spitsbergen Area

Joiris, Claude R.; Moatemri, N. Laroussi; Holsbeek, Ludo

doi:10.1007/s001289900502

Cited by 24 publications

(6 citation statements)

References 11 publications

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“…Levels of PCBs (measured as Aroclor 1254) in mixed zooplankton and Pandalus borealis collected near Svalbard in the early 1990s were 10 times higher, based on dry or lipid basis (Joiris et al 1997), than those observed in the Baffin Bay samples from this study. These high levels observed by Joiris et al (1997) could be explained in part by higher concentrations in the past (the samples were collected in the late 1980s) (de Wit et al 2003).…”

Section: Spatial Trends Of Ocs and Comparison To Other Studiescontrasting

confidence: 58%

Influence of habitat, trophic ecology and lipids on, and spatial trends of, organochlorine contaminants in Arctic marine invertebrates

Fisk¹,

Hoekstra²,

Gagnon³

et al. 2003

Mar. Ecol. Prog. Ser.

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Section: Spatial Trends Of Ocs and Comparison To Other Studiescontrasting

confidence: 58%

Influence of habitat, trophic ecology and lipids on, and spatial trends of, organochlorine contaminants in Arctic marine invertebrates

Fisk¹,

Hoekstra²,

Gagnon³

et al. 2003

Mar. Ecol. Prog. Ser.

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“…Carnivorous fish had a lower mean mercury level than that of the predators (Figure A); however, no statistical significance was found ( P > 0.05). The results of the present study are comparable to those of other studies, particularly for the variation of the average mercury levels among herbivorous and carnivorous species (Joiris and others ; Al‐Majid and Preston ). In shellfish, the carnivores showed slightly higher mean mercury concentrations than the herbivores and filter feeders used in this study (Figure B).…”

Section: Resultsmentioning

confidence: 99%

Concentration and Exposure Assessment of Mercury in Commercial Fish and Other Seafood Marketed in Oman

Al-Mughairi

Yesudhason

Al-Busaidi

et al. 2013

Journal of Food Science

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The results of this study present analytical data of the mercury levels in several fish and shellfish species to create awareness among individuals of the risks associated with consuming fish contaminated with mercury. Mercury concentrations varied from a mean of 0.02 mg/kg in Indian mackerel to 0.19 mg/kg in shark in both fresh and frozen fish, from 0.02 mg/kg in sardines to 0.18 mg/kg in skipjack tuna in canned fish, and from 0.02 mg/kg in Indian mackerel to 0.79 mg/kg in shark in dried fish. Shellfish contained a slightly higher amount of mercury than fresh or frozen fish with a mean of 0.09 mg/kg. Trophic position, followed by habitat, was the most important factors for variability in mercury concentrations in fish and shellfish. The maximum safe weekly intake (MSWI) values of mercury were significantly higher for herbivores than for carnivores. The MSWI value for total mercury in the case of consuming most (72%) fish species was more than 5 kg; however, the MSWI value was never more than 5 kg in most (66%) shellfish species. Risks were identified upon consumption of 120 g of dried shark when exceeding the provisional tolerable weekly intake threshold (1.6 μg/kg) for methylmercury. Therefore, fish-eating populations should reduce the quantity of dried shark to efficiently diminish the exposure to mercury.

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“…Transformation of literature values of mercury to methyl mercury were based on Dietz et al (1996), Andersen and Depledge (1997), and Joiris et al (1997b).…”

Section: Methodsmentioning

confidence: 99%

Mercury, Food Webs, and Marine Mammals: Implications of Diet and Climate Change for Human Health

Booth

Zeller

2005

Environ Health Perspect

207

121

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We modeled the flow of methyl mercury, a toxic global pollutant, in the Faroe Islands marine ecosystem and compared average human methyl mercury exposure from consumption of pilot whale meat and fish (cod, Gadus morhua) with current tolerable weekly intake (TWI) levels. Under present conditions and climate change scenarios, methyl mercury increased in the ecosystem, translating into increased human exposure over time. However, we saw greater changes as a result of changing fishing mortalities. A large portion of the general human population exceed the TWI levels set by the World Health Organization [WHO; 1.6 μg/kg body weight (bw)], and they all exceed the reference dose (RfD) of 0.1 μg/kg bw/day set by the U.S. Environmental Protection Agency (EPA; equivalent to a TWI of 0.7 μg/kg bw). As a result of an independent study documenting that Faroese children exposed prenatally to methyl mercury had reduced cognitive abilities, pregnant women have decreased their intake of whale meat and were below the TWI levels set by the WHO and the U.S. EPA. Cod had approximately 95% lower methyl mercury concentrations than did pilot whale. Thus, the high and harmful levels of methyl mercury in the diet of Faroe Islanders are driven by whale meat consumption, and the increasing impact of climate change is likely to exacerbate this situation. Significantly, base inflow rates of mercury into the environment would need to be reduced by approximately 50% to ensure levels of intake below the WHO TWI levels, given current levels of whale consumption.

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Mercury and Polychlorinated Biphenyls in Zooplankton and Shrimp from the Barents Sea and the Spitsbergen Area

Cited by 24 publications

References 11 publications

Influence of habitat, trophic ecology and lipids on, and spatial trends of, organochlorine contaminants in Arctic marine invertebrates

Influence of habitat, trophic ecology and lipids on, and spatial trends of, organochlorine contaminants in Arctic marine invertebrates

Concentration and Exposure Assessment of Mercury in Commercial Fish and Other Seafood Marketed in Oman

Mercury, Food Webs, and Marine Mammals: Implications of Diet and Climate Change for Human Health

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