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Keywords: Corticosterone
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Journal Articles
J Exp Biol jeb.242943.
Published: 08 October 2021
... corticosterone (CORT) is known to exert contrasting effects on offspring morphology, physiology and behaviour after hatching. However, information on the effects of CORT exposure on pre-hatching embryonic development is limited. We experimentally increased yolk CORT levels in yellow-legged gull ( Larus...
Journal Articles
J Exp Biol (2021) 224 (12): jeb240499.
Published: 18 June 2021
... both control and stressor-exposed conditions. Individuals significantly decreased their baseline corticosterone levels and increased their mass during treatment exposure. This response was consistent across environmental challenge types. There was high repeatability in the intercept and slope...
Includes: Supplementary data
Journal Articles
J Exp Biol (2021) 224 (3): jeb238774.
Published: 10 February 2021
... migrants to declining food availability. (1) The prepare hypothesis predicts that facultative migrants prepare for departure by increasing fuel stores in response to declining food availability, and elevations of baseline corticosterone (CORT) facilitate increased activity. (2) The escape hypothesis...
Includes: Supplementary data
Journal Articles
J Exp Biol (2020) 223 (15): jeb219865.
Published: 13 August 2020
..., such as corticosterone, affect an organism's ability to overcome such challenges. We hypothesized that changes in the glucocorticoid response curve contribute to the evolution of increased performance during challenging conditions, and tested it on bank voles ( Myodes glareolus ) from a multidirectional artificial...
Includes: Supplementary data
Journal Articles
J Exp Biol (2020) 223 (8): jeb219501.
Published: 23 April 2020
... of the cardiovascular response upon repeated exposure to restraint stress in rats. The habituation of the corticosterone response to repeated restraint stress was also evaluated. For this, animals were subjected to either acute or 10 daily sessions of 60 min of restraint stress. CVS and social isolation protocols...
Journal Articles
J Exp Biol (2020) 223 (1): jeb209346.
Published: 02 January 2020
... with moderate gonadal and liver expression. Inhibition of glucocorticoid generation by metyrapone was found to decrease levels peripherally, while both peripheral and central administration of the 11β-HSD2 inhibitor DETC resulted in elevated concentrations of corticosterone. These data suggest that during...
Journal Articles
J Exp Biol (2019) 222 (22): jeb208645.
Published: 21 November 2019
... response and impact the immunity of the South American rattlesnake ( Crotalus durissus ) when compared with a fluctuating thermal regime. We addressed this question by determining heterophil:lymphocyte (H:L) ratio, plasma bacteria-killing ability (BKA) and corticosterone (CORT) levels in snakes kept under...
Includes: Supplementary data
Journal Articles
J Exp Biol (2019) 222 (20): jeb209593.
Published: 18 October 2019
... to increase with baseline corticosterone level, and decreased with the post-exercise corticosterone level. Thus, increased baseline corticosterone level promotes high metabolic performance, but a high corticosterone response to swimming acts as an inhibitor rather than stimulator of intense activity. However...
Includes: Supplementary data
Journal Articles
J Exp Biol (2019) 222 (11): jeb200220.
Published: 07 June 2019
... , J. M. , Kennedy , H. , Mendonça , M. T. , Wilson , A. E. and Grindstaff , J. ( 2015 ). A meta-analysis of plasma corticosterone and heterophil: lymphocyte ratios - is there conservation of physiological stress responses over time?   Funct. Ecol.   29 , 1189 - 1196 . 10.1111...
Includes: Supplementary data
Journal Articles
J Exp Biol (2019) 222 (4): jeb188359.
Published: 15 February 2019
... ( Sceloporus undulatus ) from populations that naturally differ in long-term exposure to invasive fire ants ( Solenopsis invicta ). We manipulated early-life stress in the resulting offspring via weekly exposure to fire ants, application of the stress-relevant hormone corticosterone or control treatment from 2...
Journal Articles
J Exp Biol (2018) 221 (23): jeb187880.
Published: 27 November 2018
... ) Competing interests The authors declare no competing or financial interests. 29 6 2018 10 10 2018 © 2018. Published by The Company of Biologists Ltd 2018 http://www.biologists.com/user-licence-1-1/ Summary: The association between baseline corticosterone and temperature...
Includes: Supplementary data
Journal Articles
J Exp Biol (2018) 221 (18): jeb178236.
Published: 20 September 2018
... change. The emergence of non-invasive corticosterone (CORT) assays allows us to rapidly assess physiological responses to environmental change on a large scale. We lack, however, a basic understanding of how temperature affects CORT, and whether temperature and CORT interactively affect performance. Here...
Journal Articles
J Exp Biol (2018) 221 (9): jeb174300.
Published: 10 May 2018
... are virtually unknown. Bird eggs contain vitamin E, a major antioxidant, and also maternal corticosterone. The independent consequences of variation in the egg concentrations of these compounds for offspring phenotype are largely unknown and no study has investigated their combined effects. We manipulated...
Journal Articles
J Exp Biol (2017) 220 (23): 4426–4431.
Published: 01 December 2017
... is thought to be ubiquitous across vertebrates, we are not aware of experiments which tested this directly, i.e. in which metabolic rate was manipulated and measured together with GCs. We therefore tested for a relationship between plasma corticosterone (CORT; ln transformed) and metabolic rate (MR; measured...
Includes: Supplementary data
Journal Articles
J Exp Biol (2017) 220 (18): 3391–3397.
Published: 15 September 2017
... and nutrient costs of glucocorticoid-accelerated development alter fitness trade-offs across life stages. Amphibian Life history Trade-off Glucocorticoids Corticosterone Stable isotopes Larval development is shaped by genetic and environmental interactions, and variation in conditions during...
Journal Articles
J Exp Biol (2017) 220 (12): 2166–2174.
Published: 15 June 2017
... 27 3 2017 © 2017. Published by The Company of Biologists Ltd 2017 http://www.biologists.com/user-licence-1-1/ Summary: Dehydration in Gila monsters did not elevate initial corticosterone, but increased innate immunity and stress reactivity, showing that dehydration may not elicit...
Journal Articles
J Exp Biol (2017) 220 (12): 2187–2195.
Published: 15 June 2017
..., cold temperature increased bacterial killing capacity, indicative of innate immunity, and did not affect the mass of the thymus and spleen, intermediate granulocytes, the phytohaemagglutinin (PHA) response and the levels of blood glucose and serum leptin. Corticosterone concentration was affected...
Journal Articles
J Exp Biol (2017) 220 (7): 1330–1340.
Published: 01 April 2017
... those of migrants; (2) only migrants displayed prenuptial molt, preparations for migration and migratory restlessness; and (3) neither baseline nor stress-induced plasma corticosterone differed across subspecies, suggesting energetic demands of the common garden were insufficient to induce...
Journal Articles
J Exp Biol (2016) 219 (18): 2944–2954.
Published: 15 September 2016
... rate and physiological markers of hormonal stress response, energy availability and anaerobic respiration in blood plasma across five ecologically relevant temperatures (24, 28, 32, 35 and 38°C; 3 h exposure). Corticosterone, insulin and glucose concentrations all increased with temperature...
Journal Articles
J Exp Biol (2015) 218 (18): 2847–2855.
Published: 01 September 2015
.... Dev.   67 , 77 - 82 . 10.1002/mrd.20014 Schmidt , K. L. and Soma , K. K. ( 2008 ). Cortisol and corticosterone in the songbird immune and nervous systems: local vs. systemic levels during development . Am. J. Physiol. Regul. Integr. Comp. Physiol.   295 , R103 - R110 . 10.1152...