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Keywords: Respirometry
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Journal Articles
J Exp Biol (2022) 225 (11): jeb244239.
Published: 6 June 2022
... interests. 11 3 2022 27 4 2022 © 2022. Published by The Company of Biologists Ltd 2022 Summary: Curvilinear modelling of the limiting effect of oxygen on peak performance of individual fish offers a robust, standardized methodology. Respirometry Hypoxia Maximum oxygen...
Includes: Supplementary data
Journal Articles
J Exp Biol (2022) 225 (9): jeb243966.
Published: 29 April 2022
...David J. Sandstrom; Bruce W. Offord ABSTRACT Coulometric respirometry is a highly sensitive method for measuring O 2 consumption in small organisms but it is not in widespread use among physiologists. Here, we describe a coulometric microrespirometer based on a digital environmental sensor inside...
Includes: Supplementary data
Journal Articles
J Exp Biol (2022) 225 (6): jeb243672.
Published: 16 March 2022
... hypothesized therefore that partitioning of CO 2 would shift to the air phase in severe aquatic hypoxia, eliminating the risk of branchial O 2 loss. By adapting a respirometer designed to measure aquatic Ṁ O 2 / Ṁ CO 2 , we were able to run intermittent closed respirometry on both water and air phase for both...
Includes: Supplementary data
Journal Articles
J Exp Biol (2022) 225 (4): jeb243121.
Published: 24 February 2022
... the impacts of anthropogenic disturbance to marine mammals. We combined estimates of energetic costs derived from breath-by-breath respirometry with measurements of overall dynamic body acceleration (ODBA) from biologging tags to validate ODBA as a proxy for COL in trained common bottlenose dolphins...
Includes: Supplementary data
Journal Articles
J Exp Biol (2022) 225 (1): jeb243300.
Published: 13 January 2022
... indicate statistical differences from the post hoc contrasts ( P <0.05). N =16 for controls and N =32 for sessile and mobile groups. Table 2. Estimated parameters from selected models for each respirometry measure Parasites are ubiquitous in nature, where they play a pivotal...
Includes: Supplementary data
Journal Articles
J Exp Biol (2021) 224 (19): jeb242972.
Published: 14 October 2021
... reflect an evolutionary trade-off favouring the extreme sensory biology of this unusual insectivore. Respirometry Metabolism Plethysmography Hypoxic ventilatory response Fossorial Talpidae FRQS 501100000156 NSERC 501100000038 04229 Ontario Early Researcher...
Includes: Supplementary data
Journal Articles
J Exp Biol (2021) 224 (14): jeb242397.
Published: 26 July 2021
... data from hypoxia and warming together. The high f H of confined seabream indicates that respirometry techniques may bias estimates of metabolic traits in some fishes, and that biologging on free-swimming fish will provide more reliable insight into cardiac and behavioural responses to environmental...
Includes: Supplementary data
Journal Articles
J Exp Biol (2021) 224 (8): jeb242210.
Published: 30 April 2021
.... The α - method has several advantages over P crit determination and non-linear analyses, including: (1) less ambiguity and greater accuracy, (2) fewer constraints in respirometry methodology and analysis, and (3) greater predictive power and ecological and physiological insight. Across the species...
Includes: Supplementary data
Journal Articles
J Exp Biol (2021) 224 (7): jeb233544.
Published: 15 April 2021
... individuals. Following respirometry to calibrate oxygen consumption rate ( Ṁ O 2 ) with DBA under controlled conditions, predictive models can be applied to DBA data collected from free-ranging individuals. However, laboratory calibrations are generally performed on a relatively narrow size range of animals...
Includes: Supplementary data
Journal Articles
J Exp Biol (2020) 223 (22): jeb228015.
Published: 19 November 2020
... affected embryos through the relationship between metabolism and oxygen. Ocean acidification Interactive effects Early life history Respirometry Menidia menidia Multi-stressor Anthropogenic ocean warming and acidification are emerging potential stressors to marine fishes ( Hollowed et...
Includes: Supplementary data
Journal Articles
J Exp Biol (2020) 223 (19): jeb229930.
Published: 1 October 2020
... Metabolic rate Physiological control Respirometry Thermoregulation Water balance Water vapour pressure Evaporative water loss (EWL) is important for terrestrial endothermic animals, affecting both water balance and thermoregulation. As it can account for more than 70% of the total water loss...
Journal Articles
J Exp Biol (2020) 223 (12): jeb220962.
Published: 26 June 2020
... foraging in fast flows because of a high attack cost and low prey capture success associated with leaving a station-holding refuge to intercept prey. By integrating optimum foraging theory with empirical data from respirometry and video tracking, we developed a mathematical model to predict when drift...
Includes: Supplementary data
Journal Articles
J Exp Biol (2020) 223 (6): jeb212795.
Published: 18 March 2020
... metabolism trials were performed the following day. This flow speed was sufficient to provide water mixing but low enough to not induce swimming and allow the fish to rest on the bottom of the swimming section. The Ṁ O 2  (mg O 2  kg −1  h −1 ) was measured using intermittent-flow respirometry...
Includes: Supplementary data
Journal Articles
J Exp Biol (2020) 223 (4): jeb209692.
Published: 20 February 2020
... by considering multiple indices of tolerance. Hypoxia resistance Evolutionary physiology Phylogenetically independent contrasts Respirometry Diurnal hypoxia Hypoxia is a pervasive stressor in aquatic environments that can originate from natural and anthropogenic events ( Breitburg et al., 2009...
Journal Articles
J Exp Biol (2019) 222 (22): jeb203646.
Published: 13 November 2019
... for decades. Using a flow-through system, Hall's data clearly showed toadfish to be oxyconformers. But Ultsch et al. (1981) questioned why the toadfish should be an oxyconformer when the vast majority of fishes studied since 1929 were oxyregulators. Using a more sophisticated respirometry system...
Journal Articles
J Exp Biol (2019) 222 (12): jeb196568.
Published: 25 June 2019
... workload. Active oxygen uptake Iterative algorithm Swimming Respirometry Maximal exercise Maximum rate of oxygen uptake Many disciplines in biology use the maximum rate of oxygen uptake ( Ṁ O 2 max ) attained by an animal both as an index of cardiorespiratory fitness and to better...
Includes: Supplementary data
Journal Articles
J Exp Biol (2019) 222 (11): jeb200410.
Published: 10 June 2019
.... Electron microscopy Respirometry Mitochondria Reactive oxygen species Supercomplex Oxygen Mitochondria are central to cellular homeostasis as the main producers of ATP, but are also essential to regulate intracellular Ca 2+ , apoptosis, reactive oxygen species (ROS) production and cellular...
Journal Articles
J Exp Biol (2019) 222 (4): jeb191791.
Published: 27 February 2019
... as an indirect measure of aerobic metabolic rate and was calculated from the decline in oxygen content during each 7 min closed recirculating phase of the intermittent-flow respirometry cycle. Ṁ O 2  was calculated from the slope of a linear regression fit to the decrease in oxygen content over time using...
Includes: Supplementary data
Journal Articles
J Exp Biol (2018) 221 (23): jeb190900.
Published: 5 December 2018
...), as described previously ( Borowiec et al., 2015 ). Fish were prevented from respiring at the water surface during hypoxic periods with a plastic grid barrier and bubble wrap. We used stop-flow respirometry to measure the changes in Ṁ O 2  during a 24 h cycle of normoxia–hypoxia–reoxygenation for each...
Journal Articles
J Exp Biol (2018) 221 (22): jeb189993.
Published: 12 November 2018
... fish facing acutely high temperatures but does not increase upper thermal tolerance limits. Oxygen consumption Respirometry Thermal tolerance Thermal ramping Metabolism Temperature has pervasive impacts on biological processes and plays an important role in shaping the distribution...