Zobrazeno 1 - 10
of 41
pro vyhledávání: '"Alfred M Dufty"'
Autor:
Amanda M. Anaya, Alfred M. Dufty, Jennifer S. Forbey, Edward T. Furlong, Chad A. Kinney, Jessica J. Sherburne, Kimberly J. Fernie, Dana W. Kolpin
Publikováno v:
Environmental Science & Technology. 50:13206-13214
Triclocarban (TCC) and triclosan (TCS), two of the most commonly used antimicrobial compounds, can be introduced into ecosystems by applying wastewater treatment plant biosolids to agricultural fields. Concentrations of TCC and TCS were measured in d
Publikováno v:
Journal of Raptor Research. 44:113-119
The associations among corticosterone levels, energy stores, and stress are highly relevant to bird migration physiology. Many birds maintain elevated baseline corticosterone levels during migration, yet they frequently modulate additional glucocorti
Autor:
Alfred M. Dufty
Publikováno v:
Zeitschrift für Tierpsychologie. 69:177-190
and Summary Songs were recorded from two separate populations of brown-headed cowbirds (Molothrus ater). High levels of song sharing were found in each and, in one population, paired males shared more song types than did the remainder of the populati
Publikováno v:
Physiological and Biochemical Zoology. 83:78-86
Stressors encountered during avian development may affect an individual's phenotype, including immunocompetence, growth, and feather quality. We examined effects of simulated chronic low-level stress on American kestrel (Falco sparverius) nestlings.
Publikováno v:
The Wilson Journal of Ornithology. 121:778-782
We studied orientation-dependent differences in nest box microclimate and American Kestrel (Falco sparverius) reproductive parameters in Idaho, USA. Unoccupied nest boxes facing west were ,0.6u C cooler than boxes that faced south or east and had ,20
Publikováno v:
The Condor. 110:500-506
Stable-hydrogen isotope ratios (deuterium:protium; δD) in feathers enable researchers to evaluate patterns of avian movement and to estimate the source areas of migratory birds. However, variation in feather δD remains inadequately described, thus
Autor:
Alfred M. Dufty
Publikováno v:
The Auk. 125:225-229
I compared the effects on plasmacorticosterone levels of twomethods of collecting blood samples during standardized capture-and-handling stress protocols. In one method, individual nestling American Kestrels (Falco sparverius) were bled three times:
Autor:
Michael W. Butler, Alfred M. Dufty
Publikováno v:
The Condor. 109:920-928
Environmental conditions during the neonatal period can affect the growth, physiology, behavior, and immune function of birds. In many avian studies the nestling environment includes investigator handling of young, which may be stressful. While neona
Publikováno v:
Journal of Comparative Physiology B. 177:609-622
We examined the efficacy of noninvasive monitoring of endocrine function via fecal steroid immunoassays in the golden eagle and peregrine falcon. High-pressure liquid chromatography analyses of fecal glucocorticoid metabolites (fGCM) revealed that mi
Autor:
Sarah L. Stock, Greg S. Kaltenecker, James R. Belthoff, James F. Smith, Tatiana V. Zadorozhny, Lynda L. Leppert, Alfred M. Dufty
Publikováno v:
Journal of Raptor Research. 40:291-294
IDENTIFICACION DEL SEXO EN CUATRO ESPECIES DE LECHUZAS DE IDAHO: ADN Y MORFOMETRIA Para determinar el sexo de individuos de algunas especies dimorficas de rapaces en el campo se emplean cuadros morfometricos. Sin embargo, usualmente existe un rango e