A survey of metals in tissues of farmed Atlantic and wild Pacific salmon

Midwest Center for Environmental Science and Public Policy, Milwaukee, Wisconsin 53202, USA.
Environmental Toxicology and Chemistry (Impact Factor: 3.23). 10/2004; 23(9):2108-10.
Source: PubMed

ABSTRACT Contamination of fish tissues with organic and inorganic contaminants has been a pervasive environmental and public health problem. The present study reports the concentrations of nine metals in tissues of farmed Atlantic salmon (Salmo salar) and two species of wild-caught salmon (chum [Oncorhynchus keta] and coho [O. kisutch]) analyzed as part of a global survey of contaminants in these fish. Of the nine metals, organic arsenic was significantly higher in farmed than in wild salmon, whereas cobalt, copper, and cadmium were significantly higher in wild salmon. None of the contaminants exceeded federal standards or guidance levels.

Download full-text


Available from: David Orlo Carpenter, Sep 28, 2015
105 Reads
    • "Some epidemiological studies have raised concern about the adverse effects oftoxic contaminants such as methyl mercury, an environmental contaminant found in certain fish (not in fish oil) that may diminish the health benefits of omega 3 fatty acids.[60] Farm raised salmon and rainbow trout are consideredbetter sources of omega 3 fatty acidsthan their wild counterparts as they contain the same amount of mercury levels and as much or more Omega 3 fatty acids.[61] However, the purification process while manufacturing encapsulated fish oils (like P-OM3) reduce the environmental toxins.[62] "
    [Show abstract] [Hide abstract]
    ABSTRACT: Dyslipidemia and its consequences are emerging as epidemics with deleterious consequences on cardiovascular (CV) health. The beneficial effects of omega-3-fatty acids on cardiac and extra cardiac organs have been extensively studied in the last two decades, and continue to show great promise in the primary and secondary prevention of cardiovascular diseases (CVDs). Omega-3-fatty acid supplementation has been proven to have beneficial action on lipid profile, cytokine cascade, oxidant-anti-oxidant balance, parasympathetic and sympathetic tone and nitric oxide synthesis. This review summarizes the current knowledge on the basis of its cardiac and non-cardiac benefits, present results from clinical trials and the recommendations for its use in cardiac diseases and dyslipidemias.
    05/2013; 17(3):422-9. DOI:10.4103/2230-8210.111630
  • Source
    • "Contaminant accumulation in fish is controlled by uptake through ingestion of suspended particulate matter and food, ion exchange of dissolved metals across lipophilic membranes such as gills, absorption on tissues and membrane surfaces, and removal through excretory processes in the gut and gills (Alam et al., 2002; Burger et al., 2002; Ikem & Egilla, 2008). There is an increasing awareness of the elemental differences between farmed and wild fish (Fallah, Saei-Dehkordi, Nematollahi, & Jafari, 2011; Foran et al., 2004; Padula, Daughtry, & Nowak, 2008; Yildiz, 2008). However, as far as we know, there are no published data comparing metals and elements in tissues between farmed and wild fish aggregations around cages. "
    [Show abstract] [Hide abstract]
    ABSTRACT: Farmed fish and wild fish aggregating in the vicinity of four Mediterranean fish farms with different environmental conditions were sampled. Levels of metals (including As and Se) were measured in the muscle, liver, gills, bone and intestine. The wild fish from sites with anoxic substrata accumulate metals (including As and Se) from the ambient habitat in their gills whereas those from sites with oxic substrata concentrate these elements through their diet in their intestine. Tissues of wild fish aggregating around farm cages accumulate a greater number of these elements and with higher concentrations than farmed fish. Habitat, diet, ecological needs, fat content of fish, and protein expression may play an important role in these element differences between fish species. Fe in flathead grey mullet, As in surmullet, rainbow wrasse, grey gurnard and picarel and Hg in bogue may pose a risk for human health. Farmed and wild fish are good sources of P, K, Cr and Se while flathead grey mullet, picarel and comber are excellent sources of Ca and Se.
    Food Chemistry 04/2013; 141(2):680-94. DOI:10.1016/j.foodchem.2013.04.049 · 3.39 Impact Factor
  • Source
    • "No significant differences were found in metal concentrations among farmed International Journal of Basic & Applied Sciences IJBAS-IJENS Vol: 10 No:05 salmon from different regions, nor were significant differences found between the two wild salmon species with the exception of cadmium (p = 0.025). [10]. Figure 1 Wet-weight concentrations of nine metals in farmed (black bars) and wild (white bars) salmon. "
    [Show abstract] [Hide abstract]
    ABSTRACT: Salmon is a kind of fish which has good nutrition for human but it can be contaminated by heavy metal such as arsenic. In risk assessment , the provisional tolerable weekly intake (PTWI) for inorganic arsenic is 15 μg/kg b.w./week and the organic forms of arsenic present in sea foods need different consideration from the inorganic arsenic in water. There are no reports of toxicity in man or animals from the consumption of organoarsenicals in seafood. Organic arsenic compounds such as arsenobetaine and arsenocholine seem not to be converted to inorganic arsenic in vivo and not genotoxic in mammalian cells in vitro. Therefore, arsenobetaine and arsenocholine from fish and sea food consumption is not considered to represent a significant health risk.
    Australian Journal of Basic and Applied Sciences 01/2010; 10(5):6-12.
Show more