The oxygen debt hypothesis in juvenile rainbow trout after exhaustive exercise

Scarabello, M.; Heigenhauser, George J. F.; Wood, Chris M.

doi:10.1016/0034-5687(91)90121-x

Cited by 94 publications

(81 citation statements)

References 20 publications

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“…During recovery, blood, liver and muscle lactate concentrations remained at a high level, and several hours were required for lactate to return to control levels. Lactate produced under hypoxia would be mainly metabolized in situ in muscle or liver by glucogenesis or oxidation, the relative contribution of both processes being unknown (Scarabello et al 1991). In turbot, exposure to severe hypoxia has also been shown to induce significant hyperglycemia as in most fish species, such as flounder (Jorgensen & Mustafa 1980), carp and rainbow trout (Van Raaij et al 1996).…”

Section: Discussionmentioning

confidence: 99%

Effects of hypoxia and subsequent recovery on turbot Scophthalmus maximus: hormonal changes and anaerobic metabolism

Pichavant

Maxime²,

Thébault³

et al. 2002

Mar. Ecol. Prog. Ser.

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Hormonal changes, substrate mobilization and energy metabolism were studied in turbot Scophthalmus maximus exposed to 3 hypoxic conditions (oxygen partial pressure in water, PwO 2 = 90, 60 and 30 mm Hg) followed by recovery under normoxia. Measurements of the blood pH, total CO 2 concentration, arterial oxygen partial pressure, hematocrit, glucose, lactate, and 'stress' hormones (cortisol, adrenaline and noradrenaline) plasmatic concentrations were performed. Highenergy phosphorylated compounds, glycogen, glucose and lactate concentrations were also determined in liver and white muscle tissues. Exposure to 90 or 60 mm Hg did not induce any major physiological change, as hyperventilation by itself could compensate for the decrease in water oxygen tension. At 30 mm Hg, marked increases in cortisol, adrenaline and noradrenaline concentrations, associated with a decrease in blood arterial oxygen partial pressure, were observed. During exposure to 30 mm Hg, turbot resorted to anaerobic metabolism, resulting in liver glycogen depletion and lactate production. This mechanism appeared to be efficient enough to produce energy, as no significant change in phosphorylated compounds and adenylate energy charges in muscle and liver could be observed. These results indicate an absence of metabolic depression in turbot down to 30 mm Hg and confirm the high capacity of this species to cope with low water oxygen tension.

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Section: Discussionmentioning

confidence: 99%

Effects of hypoxia and subsequent recovery on turbot Scophthalmus maximus: hormonal changes and anaerobic metabolism

Pichavant

Maxime²,

Thébault³

et al. 2002

Mar. Ecol. Prog. Ser.

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“…Lastly, excess EPOC was calculated for each snail following the method commonly used for fish (Scarabello et al, 1991;Lee et al, 2003). Briefly, this was done by first subtracting ṀO 2,rest from all points and then excluding 'high' values (i.e.…”

Section: Calculationsmentioning

confidence: 99%

Will jumping snails prevail? Influence of near-future CO2, temperature and hypoxia on respiratory performance in the tropical conchGibberulus gibberulus gibbosus

Lefevre

Watson

Munday

et al. 2015

Journal of Experimental Biology

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Tropical coral reef organisms are predicted to be especially sensitive to ocean warming because many already live close to their upper thermal limit, and the expected rise in ocean CO 2 is proposed to further reduce thermal tolerance. Little, however, is known about the thermal sensitivity of a diverse and abundant group of reef animals, the gastropods. The humpbacked conch (Gibberulus gibberulus gibbosus), inhabiting subtidal zones of the Great Barrier Reef, was chosen as a model because vigorous jumping, causing increased oxygen uptake (Ṁ O2 ), can be induced by exposure to odour from a predatory cone snail (Conus marmoreus). We investigated the effect of present-day ambient (417-454 µatm) and projected-future (955-987 µatm) P CO2 on resting (Ṁ O2,rest ) and maximum (Ṁ O2,max ) Ṁ O2 , as well as Ṁ O2 during hypoxia and critical oxygen tension (P O2,crit ), in snails kept at present-day ambient (28°C) or projectedfuture temperature (33°C). Ṁ O2,rest and Ṁ O2,max were measured both at the acclimation temperature and during an acute 5°C increase. Jumping caused a 4-to 6-fold increase in Ṁ O2 , and Ṁ O2,max increased with temperature so that absolute aerobic scope was maintained even at 38°C, although factorial scope was reduced. The humpbacked conch has a high hypoxia tolerance with a P O2,crit of 2.5 kPa at 28°C and 3.5 kPa at 33°C. There was no effect of elevated CO 2 on respiratory performance at any temperature. Long-term temperature records and our field measurements suggest that habitat temperature rarely exceeds 32.6°C during the summer, indicating that these snails have aerobic capacity in excess of current and future needs.

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“…U crit was not determined). M O2 was measured once every 10min, giving three M O2 measurements (Scarabello et al, 1991) at each of the nine sequential swimming speeds. The speeds were chosen to examine M O2 , and thereby EPOC, after a swimming exercise that would not induce gait transition (1.4L F s -1 ) and after two swimming exercises that would induce gait transition (1.9 and 2.3L F s -1 ) following Drucker and Jensen (Drucker and Jensen, 1996a;Drucker and Jensen, 1996b).…”

Section: Respirometrymentioning

confidence: 99%

Partition of aerobic and anaerobic swimming costs related to gait transitions in a labriform swimmer

Svendsen

Tudorache

Jordan

et al. 2010

Journal of Experimental Biology

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SUMMARYMembers of the family Embiotocidae exhibit a distinct gait transition from exclusively pectoral fin oscillation to combined pectoral and caudal fin propulsion with increasing swimming speed. The pectoral-caudal gait transition occurs at a threshold speed termed U p-c . The objective of this study was to partition aerobic and anaerobic swimming costs at speeds below and above the U p-c in the striped surfperch Embiotoca lateralis using swimming respirometry and video analysis to test the hypothesis that the gait transition marks the switch from aerobic to anaerobic power output. Exercise oxygen consumption rate was measured at 1.4, 1.9 and 2.3Ls , E. lateralis switched to an unsteady burst and flap gait. This swimming speed resulted in EPOC, suggesting that anaerobic metabolism constituted 25% of the total costs. Burst activity correlated positively with the magnitude of the EPOC. Collectively, these data indicate that steady axial propulsion does not lead to EPOC whereas transition to burst-assisted swimming above U p-c is associated with anaerobic metabolism in this labriform swimmer.

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The oxygen debt hypothesis in juvenile rainbow trout after exhaustive exercise

Cited by 94 publications

References 20 publications

Effects of hypoxia and subsequent recovery on turbot Scophthalmus maximus: hormonal changes and anaerobic metabolism

Effects of hypoxia and subsequent recovery on turbot Scophthalmus maximus: hormonal changes and anaerobic metabolism

Will jumping snails prevail? Influence of near-future CO2, temperature and hypoxia on respiratory performance in the tropical conchGibberulus gibberulus gibbosus

Partition of aerobic and anaerobic swimming costs related to gait transitions in a labriform swimmer

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