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Keywords: Hyperoxia
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Journal Articles
J Exp Biol (2021) 224 (15): jeb242614.
Published: 29 July 2021
...Tristan J. McArley; Daniel Morgenroth; Lucas A. Zena; Andreas T. Ekström; Erik Sandblom ABSTRACT In fish, maximum O 2 consumption rate ( Ṁ O 2 ,max ) and aerobic scope can be expanded following exhaustive exercise in hyperoxia; however, the mechanisms explaining this are yet to be identified. Here...
Journal Articles
J Exp Biol (2021) 224 (1): jeb233338.
Published: 12 January 2021
... of temperature and oxygen concentrations. Hyperoxia did not extend upper thermal limits, nor did it prevent the loss of size or fertility experienced near upper chronic thermal limits. At moderate temperatures, the TSR pattern was observed under conditions of hyperoxia, normoxia and hypoxia, suggesting little...
Journal Articles
J Exp Biol (2020) 223 (11): jeb208306.
Published: 29 May 2020
... focused on measuring short-term performance responses in animals under acute exposure to critical thermal maximums. The OCLTT hypothesis, however, emphasises the importance of sustained animal performance over acute tolerance. The present study tested the effect of chronic hypoxia and hyperoxia during...
Includes: Supplementary data
Journal Articles
J Exp Biol (2018) 221 (17): jeb183830.
Published: 13 September 2018
... in the elasmobranch S qualus suckleyi . Hypoxia and hyperoxia had little effect on heart rate but did alter breathing frequency and amplitude. Atropine yielded an overall tachycardia in all oxygen conditions and abolished all heart rate variability (HRV), suggesting that HRV solely reflects fluctuating vagal tonus...
Journal Articles
J Exp Biol (2018) 221 (13): jeb179465.
Published: 02 July 2018
.../ Summary: The avian yolk bears the burden of an elevated oxidative challenge, without the embryo having to compromise its endogenous antioxidant supply or suffer oxidative damage itself. Antioxidant Hyperoxia Lipid peroxidation Oxidative stress Prenatal development Vitamin E...
Journal Articles
J Exp Biol (2018) 221 (11): jeb180257.
Published: 08 June 2018
... in the amphibious Kryptolebias marmoratus on land is driven by higher O 2 availability in atmospheric air, and the alternative hypothesis that remodeling is induced by a different environmental or physiological condition that fish experience on land. Fish were acclimated to 28 days of air, or to aquatic hyperoxia...
Includes: Supplementary data
Journal Articles
J Exp Biol (2018) 221 (2): jeb166157.
Published: 25 January 2018
... control: the developmental physiology of body and organ size regulation . WIREs Dev. Biol.   4 , 335 - 356 . 10.1002/wdev.181 Greenberg , S. and Ar , A. ( 1996 ). Effects of Chronic Hypoxia, Normoxia and Hyperoxia on larval development in the beetle Tenebrio molitor . J. Insect...
Includes: Supplementary data
Journal Articles
J Exp Biol (2016) 219 (22): 3605–3615.
Published: 15 November 2016
... values indicate an inverse relationship between blood pressure and ventilation (or breathing frequency), i.e. as blood pressure increases, ventilation decreases, and vice versa], while temperature had no effect on these sensitivities. Hyperoxia (30%; 25°C) diminished ventilation, but did not abolish...
Journal Articles
J Exp Biol (2015) 218 (23): 3746–3753.
Published: 01 December 2015
... of endogenous NO production using l -NAME suppressed the hypoventilatory response to hyperoxia, supporting an inhibitory role of NO in adult zebrafish. Neuroepithelial cells (NECs), the putative oxygen chemoreceptors of fish, contain neuronal nitric oxide synthase (nNOS). In zebrafish larvae at 4 days post...
Includes: Supplementary data
Journal Articles
J Exp Biol (2015) 218 (15): 2448–2454.
Published: 01 August 2015
... ectotherms. However, few studies have directly investigated the dependence of thermal limits on oxygen transport capacity. By manipulating oxygen availability (via environmental hyperoxia) and blood oxygen carrying capacity (via experimentally induced anaemia) in European perch ( Perca fluviatilis Linneaus...
Journal Articles
J Exp Biol (2014) 217 (19): 3447–3456.
Published: 01 October 2014
... 9 2013 15 7 2014 © 2014. Published by The Company of Biologists Ltd 2014 Dragonfly Flight Hyperoxia Hypoxia Insect Respirometry Why are insects so small compared with vertebrates? Several possible explanations have been proposed. Smaller body sizes may be adaptive...
Includes: Supplementary data
Journal Articles
J Exp Biol (2012) 215 (22): 3881–3894.
Published: 15 November 2012
... approximately 300 cells per larva at 3 days post-fertilisation (d.p.f.) to ~120 cells at 7 d.p.f., and were rarely observed in adults. Acclimation to hypoxia (30 mmHg) or hyperoxia (300 mmHg) resulted in delayed or accelerated development, respectively, of peak resting ventilatory frequency and produced changes...
Journal Articles
J Exp Biol (2010) 213 (13): 2209–2218.
Published: 01 July 2010
..., suggesting that this is not a common mechanism coupling upper and lower limits in terrestrial arthropods. CT max CT min hyperoxia hypoxia Ectotherms challenged by heat or cold reach limits to physiological function that are set by processes operating at the cellular, organ or whole-animal...
Includes: Supplementary data
Journal Articles
J Exp Biol (2009) 212 (19): 3132–3141.
Published: 01 October 2009
... to organisms. Hyperoxia toxicity is thought to be caused by an increased production of free radicals and hydrogen peroxide generation ( Joenje,1989 ; Paget et al.,1987 ). Among other effects, hyperoxia can disrupt metabolic pathways and reduce respiration rates( Gille and Joenje, 1992 ; Jamieson, 1989...
Journal Articles
J Exp Biol (2009) 212 (9): 1237–1247.
Published: 01 May 2009
...Tomasz Owerkowicz; Ruth M. Elsey; James W. Hicks SUMMARY Recent palaeoatmospheric models suggest large-scale fluctuations in ambient oxygen level over the past 550 million years. To better understand how global hypoxia and hyperoxia might have affected the growth and physiology of contemporary...
Journal Articles
J Exp Biol (2006) 209 (15): 2893–2901.
Published: 01 August 2006
...,metallothionein (MT) and CYP1A, were examined with real-time quantitative (q)RT-PCR in hepatic tissue of Atlantic cod exposed to 46% (hypoxia), 76%(normoxia) and 145% (hyperoxia) O 2 saturation (tank outlet). To evaluate the oxidative stress state, the levels of total glutathione (tGSH),reduced glutathione (GSH...
Journal Articles
J Exp Biol (2006) 209 (7): 1261–1273.
Published: 01 April 2006
...B. Vulesevic; B. McNeill; S. F. Perry SUMMARY The goals of this study were to assess the respiratory consequences of exposing adult zebrafish Danio rerio to chronic changes in water gas composition (hypoxia, hyperoxia or hypercapnia) and to determine if any ensuing effects could be related...
Journal Articles
J Exp Biol (2006) 209 (1): 115–127.
Published: 01 January 2006
...Enrico L. Rezende; Theodore Garland, Jr; Mark A. Chappell; Jessica L. Malisch; Fernando R. Gomes SUMMARY We compared maximum aerobic capacity during forced exercise( V̇ O 2max ) in hypoxia ( P O 2=14% O 2 ), normoxia (21%) and hyperoxia (30%) of lines of house mice selectively bred for high...
Journal Articles
J Exp Biol (2005) 208 (4): 661–670.
Published: 15 February 2005
... crustacea control of breathing oxygen regulation hypoxia hyperoxia circadian rhythm Myodocopid ostracods are small bivalved crustaceans that have a fossil record dating back to the lower Silurian, about 425 million years ago. A well-preserved fossil of Cylindroleberididae has been recently...
Journal Articles
J Exp Biol (2005) 208 (2): 277–285.
Published: 15 January 2005
... cells of A. viridis also maintain unaltered basal values for cellular damage when exposed to experimental hyperoxia (100% O 2 ) or to experimental thermal stress (elevated temperature +7°C above ambient). Under such conditions, A. schmidti modifies its SOD activity significantly. Electrophoretic...