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Keywords: metabolic depression
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Journal Articles
J Exp Biol (2021) 224 (6): jeb238659.
Published: 15 March 2021
... of metabolic depression. The global metabolomic and enzymatic analyses revealed production of metabolites characteristic of oxygen-independent pathways of ATP generation (lactate and succinate) in the depressed metabolic state, which suggests that anaerobic metabolism was the main energy supply pathway under...
Includes: Supplementary data
Journal Articles
J Exp Biol (2018) 221 (23): jeb190900.
Published: 5 December 2018
... of metabolic depression. By contrast, fish acclimated to intermittent hypoxia maintained sufficient O 2 transport to support normoxic Ṁ O 2 , modestly recruited lactate metabolism and increased Ṁ O 2 dramatically upon reoxygenation. Both groups of hypoxia-acclimated fish had similar glycogen, ATP...
Journal Articles
J Exp Biol (2017) 220 (15): 2777–2786.
Published: 1 August 2017
... and may determine many of the complex life history characteristics unique to annual killifishes. Developmental arrest Life history evolution Phenotypic plasticity Metabolic depression The cellular mechanisms that support entrance into reversible states of metabolic and developmental...
Includes: Supplementary data
Journal Articles
J Exp Biol (2017) 220 (4): 564–572.
Published: 15 February 2017
... the goldfish's anoxia tolerance results from conserved energy via metabolic depression, its hypoxia tolerance results from exceptional O 2 extraction abilities capable of supporting routine metabolic rate even in severe hypoxia. Calorespirometry Critical oxygen tension Environmental hypoxia Fish...
Journal Articles
J Exp Biol (2016) 219 (6): 870–877.
Published: 15 March 2016
... be chronic causes of food limitation through reduced photosynthesis. Furthermore, coral bleaching is common in present-day reefs, creating a context in which metabolic depression could have beneficial value to corals. In the present study, corals (massive Porites spp.) were exposed to an extreme case...
Journal Articles
J Exp Biol (2015) 218 (12): 1897–1906.
Published: 1 June 2015
... during diapause and thus alterations in mitochondrial physiology are a key component of the suite of characters associated with cessation of development. Here, we use these two species to illustrate the basic principles of metabolic depression at the physiological and biochemical levels. It is clear...
Journal Articles
J Exp Biol (2014) 217 (14): 2489–2498.
Published: 15 July 2014
.... 5 2 2014 2 4 2014 © 2014. Published by The Company of Biologists Ltd 2014 Torpor Nuclear run-on Metabolic depression During the winter, hibernating mammals such as ground squirrels oscillate between bouts of metabolic depression (torpor), wherein core body temperature...
Includes: Supplementary data
Journal Articles
J Exp Biol (2010) 213 (17): 2940–2949.
Published: 1 September 2010
... conditions has been explained largely in the context of two contrasting hypotheses, namely metabolic depression in response to stressful or resource-(e.g. water) limited conditions, or elevation of metabolism at low temperatures to sustain life in extreme conditions. To deconstruct the basis for metabolic...
Journal Articles
J Exp Biol (2009) 212 (21): 3428–3439.
Published: 1 November 2009
... doubled in crabs walking for 30 min at 8 m min –1 . The metabolic depression resulting from bacterial injection persisted throughout the exercise period and patterns of phosphagen and adenylate consumption within walking leg muscle were not affected by treatment. The ability of crabs to supply required...
Journal Articles
J Exp Biol (2009) 212 (13): 2075–2084.
Published: 1 July 2009
... synthesis. A. socius appears to be unusual in that there is not an acute metabolic depression during diapause entry at the point when development ceases in the late gastrula stage(4–5 days post-oviposition)( Reynolds and Hand, 2009 ). However, the ontogenetic increase in respiration observed for the non...
Includes: Supplementary data
Journal Articles
J Exp Biol (2008) 211 (12): 1829–1840.
Published: 15 June 2008
... 2008 2008 apoptosis necrosis permeability transition pore metabolic depression anoxia diapause caspase activation Bioenergetic constraints, as a consequence of metabolic depression, occur when animals are challenged with stressful physical environments( Guppy and Withers, 1999...
Journal Articles
J Exp Biol (2007) 210 (24): 4345–4350.
Published: 15 December 2007
... T b body temperature TMR torpid metabolic rate T min temperature at minimum torpid metabolic rate V̇ O 2 rate of oxygen consumption Eptesicus fuscus fat storing hibernation metabolic depression Myotis lucifugus respirometry thermal preference...
Journal Articles
J Exp Biol (2007) 210 (13): 2253–2266.
Published: 1 July 2007
... for correspondence (e-mail: jpod@pdx.edu ) 5 4 2007 © The Company of Biologists Limited 2007 2007 anaerobiosis anoxia development fish GABA lactate metabolic depression Tolerance of anoxia is the exception rather than the rule for vertebrates( Lutz et al., 1996 ). The physiology...
Includes: Supplementary data
Journal Articles
J Exp Biol (2005) 208 (7): 1373–1383.
Published: 1 April 2005
.... Their temporal relationship was analysed during the time course of metabolic depression at different ambient temperatures. Body temperature and heart rate were measured in unrestrained dormice with implanted transmitter. Ventilation frequency was monitored by total body plethysmography or infrared video...
Journal Articles
J Exp Biol (2004) 207 (26): 4525–4533.
Published: 15 December 2004
... in summer (271μmol O 2 kg -1 min -1 ) than in spring (200μmol O 2 kg -1 min -1 ) and that fasting-induced metabolic depression is only possible in summer (-25% in 14 days). The metabolic rate of rabbits is high at all times (383 μmol O 2 kg -1 min -1 ), but they show a more rapid depression in response...
Journal Articles
J Exp Biol (2004) 207 (11): 1915–1924.
Published: 1 May 2004
... from anaerobic metabolism. During hypoxia, a metabolic depression of approximately 2/3 occurred for non-contractile processes in both turtle and trout preparations. During hypoxia, lactate production and residual oxygen consumption were similar in turtle and trout. Cellular energy state...
Journal Articles
J Exp Biol (2004) 207 (2): 307–318.
Published: 15 January 2004
... =0.75) to values significantly greater than 1.0 in late autumn and during winter dormancy indicates an allometric effect on the degree of metabolic depression related to the size of the fat stores and suggests greater energy conservation in the smaller young. Maximum CS and HOAD activities...
Journal Articles
J Exp Biol (2003) 206 (22): 4167–4178.
Published: 15 November 2003
... metabolic depression during valve closure. * Author for correspondence (e-mail: ortmann@uni-duesseldorf.de ) 11 8 2003 © The Company of Biologists Limited 2003 2003 anaerobiosis bivalve Asian clam Corbicula fluminea calorimetry circadian rhythm metabolic depression energy...
Journal Articles
J Exp Biol (2003) 206 (14): 2363–2371.
Published: 15 July 2003
...Julian L. Pakay; Andrew A. Hobbs; Scot R. Kimball; Michael Guppy SUMMARY We have investigated the role of eukaryotic initiation factor 2α(eIF2α) in two estivating organisms previously shown to downregulate protein synthesis during metabolic depression, the land snail Helix aspersa Müller...
Journal Articles
J Exp Biol (2003) 206 (4): 675–685.
Published: 15 February 2003
... damage during estivation may have resulted from low levels of ROS formation associated with decreased rates of lipid hydroperoxide detoxification and oxidized protein turnover caused by metabolic depression. The regulation of the antioxidant system during hypometabolism may constitute a mechanism...