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Keywords: oxygen consumption
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Journal Articles
J Exp Biol (2021) 224 (9): jeb234344.
Published: 10 May 2021
.... Therefore, we hypothesized that the medullary raphe modulates heat gain and loss thermoeffectors in birds. We investigated the effect of glutamatergic and GABAergic inhibition in this specific region on body temperature ( T b ), oxygen consumption (thermogenesis), ventilation (O 2 supply in cold, thermal...
Includes: Supplementary data
Journal Articles
J Exp Biol (2020) 223 (18): jeb231985.
Published: 25 September 2020
... assessed dehydration stress tolerance in diapausing and developing Austrofundulus limnaeus embryos. We measured oxygen consumption rates under aquatic and aerial conditions to test the hypothesis that there is a trade-off between water retention and oxygen permeability. Diapausing embryos survive...
Journal Articles
J Exp Biol (2020) 223 (16): jeb222703.
Published: 24 August 2020
... of the energetic costs of bidirectional water flow suggests that those costs may explain differential distribution of shell species occupied by hermit crabs between wave-exposed and -protected sites. Energetics Gastropod shell Hydrodynamics Oxygen consumption Waves Intertidal The...
Journal Articles
J Exp Biol (2020) 223 (5): jeb211250.
Published: 11 March 2020
.../user-licence-1-1/ Summary: An increased blood-oxygen carrying capacity provides high-altitude ducks in the Andes with a greater reserve for O 2 delivery in hypoxia. Heart rate variability Oxygen transport Oxygen consumption Heart rate Haemoglobin Hypoxia A major role of the...
Includes: Supplementary data
Journal Articles
J Exp Biol (2020) 223 (4): jeb216762.
Published: 19 February 2020
... natural structure of gills and does not require mechanical separation. LEAK Oxidative phosphorylation Mitochondrion-rich cells Oxygraph Oxygen consumption Electron transport chain It has been known for a long time that fish gills are highly metabolically active – indeed, Keys and...
Includes: Supplementary data
Journal Articles
J Exp Biol (2019) 222 (18): jeb210633.
Published: 26 September 2019
...Jessica E. Reemeyer; Bernard B. Rees ABSTRACT The critical oxygen tension ( P crit ) for fishes is the oxygen level below which the rate of oxygen consumption ( Ṁ O 2 ) becomes dependent upon ambient oxygen partial pressure ( P O 2 ). We compare multiple curve-fitting approaches to estimate P crit...
Includes: Supplementary data
Journal Articles
J Exp Biol (2019) 222 (13): jeb204800.
Published: 05 July 2019
... during hypoxia, and supports a physiological benefit of the HVR in early life stages of zebrafish. Summary: Larval zebrafish are able to regulate their hypoxic ventilatory response, which significantly contributes to overall oxygen uptake under hypoxic conditions. Oxygen consumption Critical...
Includes: Supplementary data
Journal Articles
J Exp Biol (2019) 222 (10): jeb202390.
Published: 21 May 2019
.... The lachrymal salt gland facilitates excretion of excess sodium (Na + ) and chloride (Cl − ) ions through active transport mechanisms. We investigated body fluid dynamics, oxygen consumption ( V̇ O 2 ) and osmotic status of terrapins exposed to an acute increase in salinity (12 to 35 psu) at 10 and 25...
Includes: Supplementary data
Journal Articles
J Exp Biol (2019) 222 (9): jeb201400.
Published: 30 April 2019
... differentially, and fish with a high cost may alter dispersal patterns. Oxygen consumption Temperature Exercise Locomotion Acclimation Allocation trade-off Our aims were to determine causes and consequences of differences in CoT between individuals. We tested whether: (i) lower...
Journal Articles
J Exp Biol (2019) 222 (7): jeb196659.
Published: 04 April 2019
... under water using cutaneous respiration, making them independent of visits to the surface to collect air, but restricting them to a small size. Allometry Aquatic insect Body mass Boundary layer Cuticle Metabolic rate Oxygen consumption Insects evolved in a terrestrial environment, as...
Includes: Supplementary data
Journal Articles
J Exp Biol (2018) 221 (22): jeb189993.
Published: 12 November 2018
... high-temperature events. Therefore, we measured the metabolic response (mass-specific rate of oxygen consumption, Ṁ O 2 ) to thermal ramping (21–29°C) and the upper thermal tolerance limit ( U TL ) of two intertidal triplefin fishes ( Bellapiscis medius and Forsterygion lapillum ) under hyperoxia and...
Journal Articles
J Exp Biol (2018) 221 (20): jeb185900.
Published: 18 October 2018
... hibernate with T b of 28°C. During the active season, oxygen consumption may vary 25-fold with little or no change in T b . During the austral winter, tenrecs are consistently torpid but the depth of torpor may vary. A righting assay revealed that T b contributes to but does not dictate activity status...
Includes: Supplementary data
Journal Articles
J Exp Biol (2018) 221 (14): jeb180703.
Published: 16 July 2018
... demonstrate a high metabolic sensitivity to an acute temperature increase, as well as the metabolic responses to stress. Gastrointestinal Teleost Oxygen consumption Metabolism Energy expenditure The gut is a multifunctional organ system responsible for a range of crucial, intricately linked...
Includes: Supplementary data
Journal Articles
J Exp Biol (2018) 221 (7): jeb172874.
Published: 06 April 2018
... 2 technology Oxygen consumption Metabolism Seed biology One of the basic processes of life is the oxidation of substrates, termed metabolism ( Kleiber, 1961 ). Simple measures of O 2 consumption to infer metabolic rate (MR) are difficult to compare across diverse species because...
Includes: Supplementary data
Journal Articles
J Exp Biol (2018) 221 (5): jeb166975.
Published: 13 March 2018
...: Triploid juvenile Atlantic salmon achieve similar aerobic capacities and critical thermal maxima to those of their diploid conspecifics. Critical thermal maxima Elevated temperature Oxygen consumption Salmonids Ploidy Triploid fish have been proposed as useful experimental models to...
Journal Articles
J Exp Biol (2018) 221 (1): jeb170894.
Published: 04 January 2018
... physiological responses above and below T crit for a small tree-dwelling bat ( Chalinolobus gouldii , ∼14 g) that is often exposed to sub-zero temperatures during winter. Through simultaneous measurement of heart rate ( f H ) and oxygen consumption ( V̇ O 2 ), we show that the relationship between oxygen...
Journal Articles
J Exp Biol (2018) 221 (1): jeb165225.
Published: 04 January 2018
... energy, thus decreasing the likelihood of survival. In this study hatchlings were run on a treadmill for 200 or 500 m to investigate the physiological impacts of disorientation crawling in loggerhead ( Caretta caretta ) and green ( Chelonia mydas ) sea turtle hatchlings. Oxygen consumption, lactate...
Journal Articles
J Exp Biol (2017) 220 (20): 3641–3648.
Published: 15 October 2017
... selected claw and are ideal for assessing the impact of a sexually selected trait on the cost of locomotion. Here, we measured the energy expenditure of clawed, declawed and artificially loaded crabs during sustained exercise by measuring oxygen consumption and blood lactate levels. We also measured blood...
Journal Articles
J Exp Biol (2016) 219 (21): 3321–3328.
Published: 01 November 2016
... enclosed nests; this economy helps explain the species' social dynamics and breeding phenology. Cooperative breeding Energy expenditure Group size Metabolic rate Oxygen consumption Thermoregulatory costs Group living is widespread in the animal kingdom and has consequences for phenotypic...
Includes: Supplementary data
Journal Articles
J Exp Biol (2016) 219 (10): 1505–1513.
Published: 15 May 2016
... this period by ∼50%, a phenomenon termed ‘social facilitation’. Aggregation behaviour Social facilitation Metabolic expenditure Green turtle Oxygen consumption Hatchlings Grouping of individuals of the same species resulting in mutual benefits is common in animals. Experimental data...