Toxicity of Selenomethionine- and Seleno-Contaminated Sediment to the Amphipod Corophium sp.

Hyne, Ross V.; Hogan, Alicia C.; Pablo, Fleur; Roach, Anthony C.

doi:10.1006/eesa.2002.2157

Cited by 14 publications

(14 citation statements)

References 38 publications

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“…In response to toxic components (such as Hg or U) bivalves often decrease their ventilatory activity as a protective mechanism. As selenomethionine (SeMet) is known to be very toxic (96h LC 50 of 1.5 µg/L for juvenile amphipods [19]), we suggest the establishment of a protective mechanism expressed by a strong decrease of the ventilation activity of the animals. Remarquably, when bivalves were exposed to dissolved selenite, at [alg]= 1-2 x 10 5 cells/mL, the ventilation increased by a factor of 2.…”

Section: S5mentioning

confidence: 84%

Effect of selenium exposure on the freshwater bivalve Corbicula fluminea

et al. 2005

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Abstract. Selenium is essential for most of living organisms. In normoxic to moderately hypoxic freshwaters, Se exists predominantly in the (+VI) and (+IV) oxidation states as selenate and selenite respectively, whereas in the biota it is incorporated as Se (-II) or Se (0). At low concentrations, it acts against oxidative damages, but it may be toxic at higher levels. In filter feeders, such as the freshwater bivalve Corbicula fluminea, the ventilatory activity is a primary limiting step that controls the water influx and therefore the delivery of contaminants. A number of different parameters such as algal food density or presence of contaminant can influence the ventilation and hence the bioaccumulation potential of the contaminant. We report here a set of short-term experiments performed to study the effects of different forms of dissolved Se (selenite, selenate, selenomethionine) and algal-bound Se on the ventilatory activity of Corbicula fluminea and to evaluate the Se bioaccumulation. All experiments were performed on a 3-day exposure period after acclimatizing the organisms during a 7-day period to the synthetic water, at a regulated algal density. Both bioaccumulation and ventilatory activity of Se exposed groups, in comparison to these of the reference group, varied greatly according to the form of Se used.

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Section: S5mentioning

confidence: 84%

Effect of selenium exposure on the freshwater bivalve Corbicula fluminea

et al. 2005

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“…Selenite proved to be more toxic than selenate in Daphnia magna (Crustacea, Cladocera) (Johnston 1987), Corophium sp. (Crustacea, Amphipoda) (Hyne et al 2002) and larvae of Spodoptera exigua (Lepidoptera, Noctuidae) (Trumble et al 1998). The opposite was true for M. scalaris larvae (Diptera, Phoridae) (Jensen et al 2005) and E. albidus (Annelida, Enchytraeidae) (this study).…”

Section: Discussionmentioning

confidence: 99%

Toxicity of selenate and selenite to the potworm Enchytraeus albidus (Annelida: Enchytraeidae): a laboratory test

et al. 2007

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Little information is available about the toxicity of inorganic selenium forms in soil animals. Therefore, the effects of selenate and selenite on the mortality and reproduction of Enchytraeus albidus were examined in standard laboratory tests with chronic exposure. Total and available amount of selenate and selenite were tested in a calcareous loamy chernozem soil. The LC(50) of selenate was 5.69 (2.7-8.12) mg kg(-1) dry wt. for total Se and 4.74 (2.14-6.98) mg kg(-1) dry wt. for available Se. Selenite LC(50) was as high as 22.5 (19.6-25.7) mg kg(-1) dry wt. for total Se and 8.10 (6.8-9.6) mg kg(-1) dry wt. for available Se. The EC(50) of selenate was 0.41 (0.35-0.48) mg kg(-1) dry wt. for total Se and 0.28 (0.24-0.34) mg kg(-1) dry wt. for available Se. Selenite EC(50) was as high as 7.3 (6.2-8.5) mg kg(-1) dry wt. for total Se and 2.46 (2.05-2.91) mg kg(-1) dry wt. for available Se. The response in reproduction was more sensitive to Se toxicity than the response in mortality. Selenate proved to be more toxic than selenite. Available data show that E. albidus may function as a biological indicator for some inorganic selenium forms in the soil.

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“…We note that although some Se concentrations are high compared to those employed in some other studies, they are sublethal and consistent with previous reports of the same chemicals in studies with C. elegans . 19, 29, 38, 39 …”

Section: Methodsmentioning

confidence: 99%

Antagonistic Growth Effects of Mercury and Selenium in Caenorhabditis elegans Are Chemical-Species-Dependent and Do Not Depend on Internal Hg/Se Ratios

Wyatt

Diringer

Rogers

et al. 2016

Environ. Sci. Technol.

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The relationship between mercury (Hg) and selenium (Se) toxicity is complex, with coexposure reported to reduce, increase, and have no effect on toxicity. Different interactions may be related to chemical compound, but this has not been systematically examined. Our goal was to assess the interactive effects between the two elements on growth in the nematode Caenorhabditis elegans, focusing on inorganic and organic Hg (HgCl2 and MeHgCl) and Se (selenomethionine, sodium selenite, and sodium selenate) compounds. We utilized aqueous Hg/Se dosing molar ratios that were either above, below, or equal to 1 and measured the internal nematode total Hg and Se concentrations for the highest concentrations of each Se compound. Observed interactions were complicated, differed between Se and Hg compounds, and included greater-than-additive, additive, and less-than-additive growth impacts. Biologically significant interactions were only observed when the dosing Se solution concentration was 100–25 000 times greater than the dosing Hg concentration. Mitigation of growth impacts was not predictable on the basis of internal Hg/Se molar ratio; improved growth was observed at some internal Hg/Se molar ratios both above and below 1. These findings suggest that future assessments of the Hg and Se relationship should incorporate chemical compound into the evaluation.

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Toxicity of Selenomethionine- and Seleno-Contaminated Sediment to the Amphipod Corophium sp.

Cited by 14 publications

References 38 publications

Effect of selenium exposure on the freshwater bivalve Corbicula fluminea

Effect of selenium exposure on the freshwater bivalve Corbicula fluminea

Toxicity of selenate and selenite to the potworm Enchytraeus albidus (Annelida: Enchytraeidae): a laboratory test

Antagonistic Growth Effects of Mercury and Selenium in Caenorhabditis elegans Are Chemical-Species-Dependent and Do Not Depend on Internal Hg/Se Ratios

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