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Titolo:
Fecal glucocorticoid assays and the physiological stress response in elk
Autore:
Millspaugh, JJ; Woods, RJ; Hunt, KE; Raedeke, KJ; Brundige, GC; Washburn, BE; Wasser, SK;
Indirizzi:
Univ Washington, Wildlife Sci Grp, Seattle, WA 98195 USA Univ Washington Seattle WA USA 98195 dlife Sci Grp, Seattle, WA 98195 USA Univ Washington, Dept Zool, Seattle, WA 98195 USA Univ Washington SeattleWA USA 98195 on, Dept Zool, Seattle, WA 98195 USA Univ Missouri, Dept Fisheries & Wildlife Sci, Columbia, MO 65211 USA Univ Missouri Columbia MO USA 65211 Wildlife Sci, Columbia, MO 65211 USA
Titolo Testata:
WILDLIFE SOCIETY BULLETIN
fascicolo: 3, volume: 29, anno: 2001,
pagine: 899 - 907
SICI:
0091-7648(200123)29:3<899:FGAATP>2.0.ZU;2-H
Fonte:
ISI
Lingua:
ENG
Soggetto:
WHITE-TAILED DEER; SEASONAL LEVELS; HUMAN DISTURBANCE; NATIONAL-PARK; BIGHORN SHEEP; CORTISOL; RHYTHMS; MOOSE; FECES; TRIIODOTHYRONINE;
Keywords:
Black Hills; Cervus elaphus; corticosterone; elk; fecal glucocorticoids; human disturbance; physiology; South Dakota; stress;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
62
Recensione:
Indirizzi per estratti:
Indirizzo: Millspaugh, JJ Univ Missouri, Dept Fisheries & Wildlife Sci, 302 A-BNR Bldg, Columbia, MO65211 USA Univ Missouri 302 A-BNR Bldg Columbia MO USA 652115211 USA
Citazione:
J.J. Millspaugh et al., "Fecal glucocorticoid assays and the physiological stress response in elk", WILDL SOC B, 29(3), 2001, pp. 899-907

Abstract

Fecal glucocorticoid assays provide a potentially useful, noninvasive means to study physiological responses of wildlife to various stressors. Consequently we quantified fecal glucocorticoid concentrations among free-rangingelk (Cervus elaphus) by subherd, sex, and season and determined their relationship to various human activities and environmental conditions. Using a validated technique, we assayed 558 fecal samples collected from 30 radiocollared elk in the Black Hills, South Dakota, from June 1995 to September 1997. Fecal glucocorticoid measures were least in winter ((x) over bar = 17.41 ng/g, SE = 2.97 for bull subherds and 18.9 ng g, SE = 2.85 for cow subherds) and increased to peak concentrations in summer ((x) over bar = 33.6 ng/g, SE = 3.42 for bull subherds and 34.21 ng/g, SE = 3.71 for cow subherds). Vehicle use along primary roads, primary road density, and mean temperature each independently explained a significant portion of the variation in fecal glucocorticoid concentrations (r(2) = 0.61, F-2,F- (557) = 286.13, P < 0.001). Annual glucocorticoid secretion also may be related to normal seasonal metabolic rhythms. Though more research is needed on fecal glucocorticoid concentrations of undisturbed elk, we hypothesize that human activities,high temperatures, or normal seasonal metabolic rhythms may have elevated summer glucocorticoid concentrations. Our findings suggested that fecal glucocorticoid assays, if coupled with population performance measures, could assess physiological effects of natural and human-induced disturbances on free-ranging elk. Also, our study illustrated the need for caution when interpreting fecal glucocorticoid measurements, because several confounding factors may influence interpretation.

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Documento generato il 27/09/20 alle ore 13:06:40