Inverse relationships between selenium and mercury in tissues of young walleye (Stizosedion vitreum) from Canadian boreal lakes

Yang, Dan-Yi; Xu, Ye; Chen, Yu Wei; Belzile, Nelson

doi:10.1016/j.scitotenv.2009.11.049

Cited by 42 publications

(30 citation statements)

References 53 publications

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“…The Se concentrations we measured were well below this, and in no case did we observe tissue concentrations approaching toxic levels (8 ppm dry weight (d.w.) in muscle tissue, 12 ppm d.w. in liver, or 10 ppm d.w. in ovaries, Lemly 2000 (Table 1) can be a diagnostic of mercury toxicity. Also, our observations on Walleye uptake of Se and Hg in different tissues are in agreement with Yang et al (2010), who found that Se:Hg was 2-7-fold greater in liver vs. muscle tissue in young-of-year Walleye. As mentioned in the Introduction, mercury and selenium are physiological antagonists.…”

Section: Discussionsupporting

confidence: 92%

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Selenium detected in fish otoliths: a novel tracer for a polluted lake?

et al. 2010

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To test if otoliths can be used to track fish migration in polluted areas, fish sampled from Onondaga Lake, heavily polluted with mercury, were used in an assay to determine whether mercury was detectable in the fishes' otoliths using synchrotronbased scanning X-ray fluorescence microscopy (SXFM). Mercury was undetectable, but selenium, rarely reported in otoliths and known as a physiological antagonist to mercury, was. Strontium was also present but appeared to be taken up independently of selenium, and thus these serve as independent biogeochemical markers. Both selenium and mercury were detected in fish tissues, but selenium was below levels considered toxic. Selenium was low in otoliths of fishes collected in nearby Oneida Lake. Synoptic surveys of water chemistry revealed that Se is regionally highest in Onondaga Lake and in particular its main inlet, Onondaga Creek. SXFM appears to be a sensitive method for detecting selenium in otoliths.

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Section: Discussionsupporting

confidence: 92%

“…Both elements bioaccumulate through aquatic and terrestrial food webs, but they are sequestered differently in different tissues (Yang et al 2010). & Objective 2: We analyzed tissues for Se and Hg in four of the Onondaga Lake fish to examine the fate of these two elements in somatic tissues.…”

Section: Introductionmentioning

confidence: 99%

Selenium detected in fish otoliths: a novel tracer for a polluted lake?

et al. 2010

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“…An example of the complexity of dose and uptake comes from seleniferous lakes in Canada where concentrations of selenium and mercury in the tissues of young walleye (Stizosedion vitreum) are negatively correlated even though mercury exposure from upwind smelting operations is high. These findings suggest that chronic exposure to high selenium concentrations may prevent mercury uptake (Yang et al 2010). It appears that eventual formation of inert, inorganic mercuric selenide depends on initial formation of selenoproteins (selenomethionine and selenocysteine) as well as the availability of the antioxidant enzyme glutathione, which mediates the process (Yang et al 2008(Yang et al , 2011.…”

Section: Metals and The Metalloid Seleniummentioning

confidence: 97%

Life Histories, Salinity Zones, and Sublethal Contributions of Contaminants to Pelagic Fish Declines Illustrated with a Case Study of San Francisco Estuary, California, USA

Brooks

Fleishman

Brown

et al. 2011

Estuaries and Coasts

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Human effects on estuaries are often associated with major decreases in abundance of aquatic species. However, remediation priorities are difficult to identify when declines result from multiple stressors with interacting sublethal effects. The San Francisco Estuary offers a useful case study of the potential role of contaminants in declines of organisms because the waters of its delta chronically violate legal water quality standards; however, direct effects of contaminants on fish species are rarely observed. Lack of direct lethality in the field has prevented consensus that contaminants may be one of the major drivers of coincident but unexplained declines of fishes with differing life histories and habitats (anadromous, brackish, and freshwater). Estuaries and Coasts (2012) 35:603-621 DOI 10.1007/s12237-011-9459-6 indicates that examining the effects of contaminants and other stressors on specific life stages in different seasons and salinity zones of the estuary is critical to identifying how several interacting stressors could contribute to a general syndrome of declines. Moreover, warming water temperatures of the magnitude projected by climate models increase metabolic rates of ectotherms, and can hasten elimination of some contaminants. However, for other pollutants, concurrent increases in respiratory rate or food intake result in higher doses per unit time without changes in the contaminant concentrations in the water. Food limitation and energetic costs of osmoregulating under altered salinities further limit the amount of energy available to fish; this energy must be redirected from growth and reproduction toward pollutant avoidance, enzymatic detoxification, or elimination. Because all of these processes require energy, bioenergetics methods are promising for evaluating effects of sublethal contaminants in the presence of other stressors, and for informing remediation. Predictive models that evaluate the direct and indirect effects of contaminants will be possible when data become available on energetic costs of exposure to contaminants given simultaneous exposure to non-contaminant stressors.

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“…However, it seems that a threshold concentration of selenium in fish body parts must be reached before a clear protective role of selenium against mercury assimilation becomes noticeable [150]. Also, concurrent exposure to methylmercury chloride and selenite led to increased selenium accumulation in medaka fish [151].…”

Section: Traffickingmentioning

confidence: 99%

Biological responses related to agonistic, antagonistic and synergistic interactions of chemical species

et al. 2012

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The fact that the essential or toxic character of elements is species specific has encouraged the development of analytical strategies for chemical speciation over the last twenty years; indeed, there are now a great number of them that provide very good performance. However, biological systems are exposed to a complex environment in which species of elements can interact in a synergistic/antagonistic fashion. Thus, the metabolism of trace elements cannot be considered in isolation. On the other hand, biological systems are dynamic, so it is necessary to study the trafficking of species of elements between organs, tissues or cell compartments in order to decipher the biochemical processes of the interactions in which they are involved. Although the application of liquid chromatography-inductively coupled plasma-based "metallomics" methods in combination with organic mass spectrometry can provide much-needed insight, new analytical strategies are required to really understand the role of species of elements in biological systems and the mechanisms of their interactions. In the present paper, the interactions of the most widely studied elements in this context (Se, Hg and As) are discussed, as well as other important interactions between different elements.

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Inverse relationships between selenium and mercury in tissues of young walleye (Stizosedion vitreum) from Canadian boreal lakes

Cited by 42 publications

References 53 publications

Selenium detected in fish otoliths: a novel tracer for a polluted lake?

Selenium detected in fish otoliths: a novel tracer for a polluted lake?

Life Histories, Salinity Zones, and Sublethal Contributions of Contaminants to Pelagic Fish Declines Illustrated with a Case Study of San Francisco Estuary, California, USA

Biological responses related to agonistic, antagonistic and synergistic interactions of chemical species

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