Regular ArticleNoninvasive Methods for Measuring and Manipulating Corticosterone in Hummingbirds
References (40)
- et al.
Noninvasive corticosterone treatment rapidly increases activity in Gambel's white-crowned sparrows (Zonotrichia leucophrys gambelii)
Gen. Comp. Endocrinol.
(1998) - et al.
Regulation of the hypothalamo–pituitary–adrenal axis during stress: Feedback, facilitation and feeding
Sem. Neurosci.
(1994) - et al.
Noninvasive fecal monitoring of glucocorticoids in spotted hyenas, Crocuta crocuta
Gen. Comp. Endocrinol.
(1999) - et al.
Corticosterone, foraging behavior, and metabolism in dark-eyed juncos, Junco hyemalis
Gen. Comp. Endocrinol.
(1990) - et al.
Corticosterone and nocturnal torpor in the rufous hummingbird (Selasphorus rufus)
Gen. Comp. Endocrinol.
(2000) - et al.
Hydrophilic cyclodextrin derivatives enable effective oral administration of steroidal hormones
J. Pharmacol. Sci.
(1986) - et al.
Amorphous water soluble derivatives of cyclodextrins: Non-toxic dissolution enhancing excipients
J. Pharmacol. Sci.
(1985) - et al.
Studies of nectar-constitution and pollinator–plant coevolution
- et al.
Vertebrate renal system
Kidney and bone: Physiological and pathophysiological relationships
Nectar feeding, diuresis, and electrolyte replacement of hummingbirds
Physiol. Zool.
Weight gain and adjustment of feeding territory size in migrant hummingbirds
Proc. Natl. Acad. Sci. USA
Experimental studies of foraging in complex laboratory environments
Am. Zool.
Food quality and foraging efficiency: The efficiency of sugar assimilation by hummingbirds
J. Comp. Physiol.
Energy regulation in hummingbirds
Am. Sci.
Stress and adrenal function
J. Exp. Zool.
Sliding thresholds of energy reserves for torpor initiation in the rufous hummingbird
Am. Zool.
Energy costs and temporal organization of torpor in the rufous hummingbird (Selasphorus rufus)
Physiol. Zool.
Seasonal differences in the response of rufous hummingbirds to food restriction: Body mass and the use of torpor
Condor
Cited by (37)
Biomarkers of heat stress and mechanism of heat stress response in Avian species: Current insights and future perspectives from poultry science
2022, Journal of Thermal BiologyCitation Excerpt :Birds raised on litter will have their urine absorbed by the litter, making sampling impossible. If raised in metabolic cages for research purposes, urine collection holders would be needed; even at that, there is also a possibility of urine drying up before the time of collection (Hiebert et al., 2000). Lumeij (1994) showed that under conditions of dehydration, 15% of urine is reabsorbed from the colon.
Sexual dimorphism in baseline urinary corticosterone metabolites and their association with body-condition indices in a peri-urban population of the common Asian toad (Duttaphrynus melanostictus)
2016, Comparative Biochemistry and Physiology -Part A : Molecular and Integrative PhysiologyCitation Excerpt :We referred to this first urine sample (time = 2 min) as a baseline sample instead of an acute response sample because of several important reasons. This first collected urine sample provides a dynamic snapshot of the corticosterone metabolites that are present in urine at that time-point and they are actually the metabolite end-products of the biologically active or “free” corticosterone, which had been present in the plasma over the past couple of hours or overnight (Hiebert et al., 2000). Therefore, any stress response initiated using capture and handling of the toads should not have been spiked in the first urine sample.
Hormone-Behavior Interrelationships of Birds in Response to Weather
2011, Advances in the Study of BehaviorCitation Excerpt :However, torpor can be used at any time of year perhaps providing maximum flexibility in relation to weather conditions. Experimental manipulations in rufous hummingbirds showed that during migration, and especially when sugar concentration of nectar was lower, torpor use increased as did excreted corticosterone levels in cloacal fluid in the evening prior to a torpor bout (Hiebert et al., 2000a). During molt, torpor bouts were less frequent and there was no correlation with corticosterone levels in cloacal fluid.
Effects of corticosterone pellets on baseline and stress-induced corticosterone and corticosteroid-binding-globulin
2009, General and Comparative EndocrinologyCitation Excerpt :Exogenous administration of glucocorticoids is a widely used and efficient tool to investigate the effects of elevated concentrations of these hormones. Methods to artificially elevate glucocorticoids include single or repeated injections (e.g. Remage-Healey and Romero, 2002; Loiseau et al., 2008), adding hormone to the food or drinking water (e.g. Breuner et al., 1998; Hiebert et al., 2000; Hull et al., 2007), or implantation of a silastic tube filled with crystalline hormone (e.g. Silverin, 1986; Wingfield and Silverin, 1986; Kitaysky et al., 2001), a gelling material containing hormone (French et al., 2007), a mini-infusion pump (Donker and Beuving, 1989) or an osmotic pump (Horton et al., 2007). These various forms of administration have different advantages and disadvantages.
Effects of repeated, short-term, corticosterone administration on the hypothalamo-pituitary-adrenal axis of the white-crowned sparrow (Zonotrichia leucophrys gambelii)
2008, General and Comparative EndocrinologyCitation Excerpt :In this manuscript, we discuss the effects of these treatments on the HPA axis. To manipulate glucocorticoid levels in birds, the vast majority of studies use subcutaneous implants (Astheimer et al., 1992; Gray et al., 1990; Hiebert et al., 2000; Romero et al., 2005; but see Breuner et al., 1998). These implants elevate plasma glucocorticoid levels for a number of days and inhibit control of endogenous glucocorticoid levels via negative feedback.
Effects of ACTH, capture, and short term confinement on glucocorticoid concentrations in harlequin ducks (Histrionicus histrionicus)
2008, Comparative Biochemistry and Physiology - A Molecular and Integrative Physiology
- 1
Current address: Department of Biological Science, Simon Fraser University, Burnaby, British Columbia, Canada V5A 1S6.