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Titolo:
Detrimental effects associated with trace element uptake in lake chubsuckers (Erimyzon sucetta) exposed to polluted sediments
Autore:
Hopkins, WA; Snodgrass, JW; Roe, JH; Jackson, BP; Gariboldi, JC; Congdon, JD;
Indirizzi:
Savannah River Ecol Lab, Columbia, SC 29208 USA Savannah River Ecol Lab Columbia SC USA 29208 Lab, Columbia, SC 29208 USA Univ S Carolina, Dept Biol Sci, Columbia, SC 29208 USA Univ S Carolina Columbia SC USA 29208 pt Biol Sci, Columbia, SC 29208 USA Towson Univ, Dept Biol, Towson, MD 21252 USA Towson Univ Towson MD USA 21252 son Univ, Dept Biol, Towson, MD 21252 USA
Titolo Testata:
ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY
fascicolo: 2, volume: 39, anno: 2000,
pagine: 193 - 199
SICI:
0090-4341(200008)39:2<193:DEAWTE>2.0.ZU;2-F
Fonte:
ISI
Lingua:
ENG
Soggetto:
TROUT SALMO-GAIRDNERI; COAL COMBUSTION WASTE; STANDARD METABOLIC-RATE; RAINBOW-TROUT; RANA-CATESBEIANA; BUFO-TERRESTRIS; ORAL DEFORMITIES; CHINOOK SALMON; SOUTHERN TOADS; SELENIUM;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Citazioni:
35
Recensione:
Indirizzi per estratti:
Indirizzo: Hopkins, WA Savannah River Ecol Lab, Columbia, SC 29208 USA Savannah RiverEcol Lab Columbia SC USA 29208 a, SC 29208 USA
Citazione:
W.A. Hopkins et al., "Detrimental effects associated with trace element uptake in lake chubsuckers (Erimyzon sucetta) exposed to polluted sediments", ARCH ENV C, 39(2), 2000, pp. 193-199

Abstract

Lake chubsuckers (Erimyzon sucetta) were exposed to coal ash-polluted sediments under conservative experimental conditions (filtered artificial soft water and abundant uncontaminated food). After 4 months of exposure, fish grazing the polluted sediments had significantly elevated body burdens of Se, Sr, and V. Selenium levels were particularly elevated, reaching mean whole body concentrations of 5.6 mu g/g dry mass by the end of experimental manipulations. Twenty-five percent of fish exposed to pollutants died during the study. All surviving fish exposed to ash exhibited substantial decreasesin growth and severe fin erosion. Total nonpolar lipids were two times higher in fish from the control treatment, but percent lipid did not differ between treatments. Because fish were presented with the same amount of food during the study, it appears fish exposed to ash utilized more energy for daily activities and/or were less efficient at converting available energy to tissues for growth and storage. The results were particularly interestingbecause we were unable to detect differences in standard metabolic rate (SMR) of fish between treatments. Increased energy expenditures not detectable in estimates of maintenance based on SMR, such as costs of digestion or activity, may have contributed to decreased energetic efficiency. Our findings corroborate previous studies which have documented the toxicity of ash-derived pollutants in fish.

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Documento generato il 08/07/20 alle ore 00:58:53