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Titolo:
Elevated trace element concentrations and standard metabolic rate in banded water snakes (Nerodia fasciata) exposed to coal combustion wastes
Autore:
Hopkins, WA; Rowe, CL; Congdon, JD;
Indirizzi:
Savannah River Ecol Lab, Aiken, SC 29802 USA Savannah River Ecol Lab Aiken SC USA 29802 Ecol Lab, Aiken, SC 29802 USA Auburn Univ, Dept Zool & Wildlife Sci, Auburn, AL 36849 USA Auburn Univ Auburn AL USA 36849 Zool & Wildlife Sci, Auburn, AL 36849 USA Univ Puerto Rico, Dept Biol, Rio Piedras, PR 00931 USA Univ Puerto Rico Rio Piedras PR USA 00931 Biol, Rio Piedras, PR 00931 USA
Titolo Testata:
ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY
fascicolo: 6, volume: 18, anno: 1999,
pagine: 1258 - 1263
SICI:
0730-7268(199906)18:6<1258:ETECAS>2.0.ZU;2-4
Fonte:
ISI
Lingua:
ENG
Soggetto:
RANA-CATESBEIANA; BUFO-TERRESTRIS; SOUTHERN TOADS; SELENIUM; CALIFORNIA; ALLIGATORS; TISSUE; GROWTH; COSTS;
Keywords:
coal combustion wastes; snakes; trace elements; standard metabolic rate;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
40
Recensione:
Indirizzi per estratti:
Indirizzo: Hopkins, WA Savannah River Ecol Lab, Aiken, SC 29802 USA Savannah River Ecol Lab Aiken SC USA 29802 iken, SC 29802 USA
Citazione:
W.A. Hopkins et al., "Elevated trace element concentrations and standard metabolic rate in banded water snakes (Nerodia fasciata) exposed to coal combustion wastes", ENV TOX CH, 18(6), 1999, pp. 1258-1263

Abstract

Trace element concentrations in banded water snakes, Nerodia fasciata, andrepresentative prey items from a site polluted by coal combustion wastes were compared with concentrations in conspecifics from a nearby reference site. Water snakes accumulated high concentrations of trace elements, especially arsenic (As) and selenium (Se), in the polluted habitat. In addition tobeing exposed to contaminants in water and sediments, snakes in the polluted site are exposed to contaminants by ingesting prey items that have elevated whole-body concentrations of trace elements, including As, cadmium (Cd), and Se. Snakes from the polluted site exhibited mean standard metabolic rates (SMR) 32% higher than snakes from the reference site. As a result, snakes from the polluted site appear to have elevated allocation of energy to maintenance and theoretically should have less energy available for growth,reproduction, and storage. Our findings are consistent with physiological responses recently documented in other organisms from the polluted site. Wehypothesize that long-term exposure to coal ash-derived trace elements andthe resultant accumulation of some elements are responsible for observed increases in SMR.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 07/07/20 alle ore 05:10:46