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Titolo:
Nondestructive indices of trace element exposure in squamate reptiles
Autore:
Hopkins, WA; Roe, JH; Snodgrass, JW; Jackson, BP; Kling, DE; Rowe, CL; Congdon, JD;
Indirizzi:
Univ Georgia, Savannah River Ecol Lab, Aiken, SC 29802 USA Univ Georgia Aiken SC USA 29802 annah River Ecol Lab, Aiken, SC 29802 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 State Univ, Dept Biol, Towson, MD USA Towson State Univ Towson MD USA on State Univ, Dept Biol, Towson, MD USA Univ Maryland, Ctr Environm Sci, Chesapeake Biol Lab, Solomons, MD 20688 USA Univ Maryland Solomons MD USA 20688 eake Biol Lab, Solomons, MD 20688 USA
Titolo Testata:
ENVIRONMENTAL POLLUTION
fascicolo: 1, volume: 115, anno: 2001,
pagine: 1 - 7
SICI:
0269-7491(2001)115:1<1:NIOTEE>2.0.ZU;2-4
Fonte:
ISI
Lingua:
ENG
Soggetto:
COAL COMBUSTION WASTE; BULLFROGS RANA-CATESBEIANA; STANDARD METABOLIC-RATE; BUFO-TERRESTRIS; CHORIOALLANTOIC MEMBRANES; ORAL DEFORMITIES; SOUTHERN TOADS; SNAKES; ASH; TADPOLES;
Keywords:
reptiles; snakes; coal combustion; selenium; nondestructive indices;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
37
Recensione:
Indirizzi per estratti:
Indirizzo: Hopkins, WA Univ Georgia, Savannah River Ecol Lab, Aiken, SC 29802 USA Univ Georgia Aiken SC USA 29802 Ecol Lab, Aiken, SC 29802 USA
Citazione:
W.A. Hopkins et al., "Nondestructive indices of trace element exposure in squamate reptiles", ENVIR POLLU, 115(1), 2001, pp. 1-7

Abstract

Compared with birds, mammals, fish, and even amphibians, very little is known about the effects of contaminants on reptiles. Recent evidence that many reptile populations may be declining has stimulated demand for toxicological studies of reptiles as well as development of nondestructive sampling techniques useful for assessing and monitoring contaminant exposure. The current study experimentally evaluated the utility of shed skins, tail clips, and blood samples as nondestructive indices of trace element exposure in banded water snakes, Nerodia fasciata. For 13.5 months, snakes were either fed fish from a coal ash-contaminated site or uncontaminated food from a reference site. Snakes fed contaminated prey accumulated As, Cd, Se, Sr, and V in various organs (i.e. liver, kidney, and/or gonads). Moreover, non-parametric discriminant function analysis revealed that snakes could be placed intwo groups that reliably reflected their experimental diet based upon Se, Sr, and As concentrations in tail clips, blood, and/or shed skins. We suggest that nondestructive sampling techniques, particularly analyses of blood and tail clips, may be easily applied in evaluations of contaminant exposure in the field and laboratory and may prevent excessive destructive sampling of potentially threatened reptile species. (C) 2001 Elsevier Science Ltd. All rights reserved.

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Documento generato il 14/07/20 alle ore 19:04:35