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Keywords: hyperoxia
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Journal Articles
J Exp Biol (2021) 224 (1): jeb233338.
Published: 12 January 2021
... 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 or...
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
... 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...
Journal Articles
J Exp Biol (2018) 221 (13): jeb179465.
Published: 02 July 2018
... antioxidant supply or suffer oxidative damage itself. Antioxidant Hyperoxia Lipid peroxidation Oxidative stress Prenatal development Vitamin E In oviparous animals, such as birds, the embryo develops within the confines of the closed egg. The egg, its structure and contents (including the...
Journal Articles
J Exp Biol (2018) 221 (11): jeb180257.
Published: 08 June 2018
... 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
.... Critical mass Growth rate Hyperoxia Hypoxia Larval instars Orthosia gothica Body size is a key life history trait that is responsible for much of life history diversity (e.g. Roff, 1992 ). Understanding the evolution of this diversity requires knowledge of the mechanistic basis of body size...
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 the...
Journal Articles
J Exp Biol (2015) 218 (23): 3746–3753.
Published: 01 December 2015
... 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
... interests. 10 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...
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
... differently to oxygen limitation, 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...
Includes: Supplementary data
Journal Articles
J Exp Biol (2009) 212 (19): 3132–3141.
Published: 01 October 2009
... to repeated short bouts of anoxia was the same as flies exposed to a single anoxia exposure. wvanvoor@nmsu.edu 18 6 2009 2009 metabolic rate reperfusion injury critical oxygen tension hypoxic response hyperoxia Understanding how organisms respond to, and tolerate...
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 to...
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
... evolution 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...
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...
Journal Articles
J Exp Biol (2004) 207 (20): 3559–3567.
Published: 15 September 2004
... DT were measured. Hypoxia produced significantly lighter larvae after one generation of exposure, while hyperoxia did not affect larval mass. Atmospheric oxygen content did not significantly change the diameters of the anterior portions of the main tracheae; however, the posterior diameters were...