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Keywords: Heart rate
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Journal Articles
J Exp Biol (2023) 226 (23): jeb246271.
Published: 28 November 2023
... aggressive social calls. The presentation of aggressive social calls, including distress calls (DCs), is known to increase heart rate ( f H ), but how this change in f H is related to the bat's sound perception and how this evokes behaviors such as the fear response is unknown. Herein, we show...
Includes: Supplementary data
Journal Articles
J Exp Biol (2023) 226 (19): jeb246304.
Published: 9 October 2023
... and secondary stress markers were determined at CT max . In dogfish, the agitation temperature was characterised by increased turning activity within experimental chambers and was equal to the temperature at which dogfish exhibited maximum heart rate. Citrate synthase activity increased at the agitation...
Includes: Supplementary data
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J Exp Biol (2023) 226 (18): jeb246227.
Published: 26 September 2023
...Rebeccah M. Sandrelli; A. Kurt Gamperl ABSTRACT In this study, Atlantic salmon were: (i) implanted with heart rate ( f H ) data storage tags (DSTs), pharmacologically stimulated to maximum f H , and warmed at 10°C h −1 (i.e. tested using a ‘rapid screening protocol’); (ii) fitted with Doppler ®...
Includes: Supplementary data
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J Exp Biol (2023) 226 (17): jeb245783.
Published: 11 September 2023
... cardiovascular screening (ECG and bioimpedance) in large non-human primates (chimpanzees), without the need for full anaesthesia or skin preparation. Electrocardiogram Electrical bioimpedance Heart rate Respiratory rate Chimpanzee Health care management Heart failure leading to a sudden...
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Journal Articles
J Exp Biol (2023) 226 (1): jeb244857.
Published: 6 January 2023
... that the hemolymph returns to the VR. The hinge ligament duct allows a constant return flow from the foot chamber to the gills and the heart. The heart rate and the flow in the FZ, which decreased and increased during the foot extension and retraction, respectively, supported this model. In conclusion, the FZ...
Includes: Supplementary data
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Journal Articles
J Exp Biol (2022) 225 (17): jeb244055.
Published: 9 September 2022
... acclimated wild, migratory Arctic char to 13°C (∼7°C above a summer average) for an ecologically relevant period (3 days) and measured maximum heart rate (ƒ H,max ) during acute warming to determine their ability to rapidly improve cardiac function at high temperatures. Arctic char exhibited rapid...
Includes: Supplementary data
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Journal Articles
J Exp Biol (2022) 225 (Suppl_1): jeb243095.
Published: 8 March 2022
... of physiological data in the field to identify physiological mechanisms of heat exchange and energetics of thermoregulation. Thermoconformer Thermoregulator Biologging Field metabolic rate Heart rate Modeling heat transfer Daily energy expenditure Big data Sigma Xi http://dx.doi.org/10.13039...
Includes: Supplementary data
Journal Articles
J Exp Biol (2021) 224 (14): jeb242397.
Published: 26 July 2021
... in a tank with conspecifics or confined to individual respirometers. After tag implantation under anaesthesia, heart rate ( f H ) required 60 h to recover to a stable value in a holding tank. Subsequently, when undisturbed under control conditions (normoxia, 21°C), mean f H was always significantly lower...
Includes: Supplementary data
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J Exp Biol (2021) 224 (1): jeb234096.
Published: 7 January 2021
... dives. We measured heart rate ( f H ) in six adult male bottlenose dolphins ( Tursiops truncatus ) spontaneously breathing at the surface to quantify the relationship between respiration and f H , and compared this with f H during submerged breath-holds. We found that dolphins exhibit a pronounced...
Includes: Supplementary data
Journal Articles
J Exp Biol (2020) 223 (17): jeb227736.
Published: 11 September 2020
... their mothers under sea ice and to the bathypelagic zone, respectively. Studies on oxygen utilization patterns and heart rates while diving are limited, but the data indicate that immature marine mammals have a limited capacity to regulate heart rate (and hence oxygen utilization) during breath-hold...
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J Exp Biol (2020) 223 (16): jeb225680.
Published: 20 August 2020
.... At these sites, temperature-induced source–sink mismatch can reduce AP frequency, resulting in low-pass filtering or a complete block of signal transmission. In principle, this hypothesis can explain a number of heat-induced effects, including reduced heart rate, reduced synaptic transmission between neurons...
Journal Articles
J Exp Biol (2020) 223 (13): jeb222893.
Published: 1 July 2020
... flat ) temperatures were recorded. Over 8 weeks of constant submersion, the mean T crit of high-zone mussels decreased by 1.07°C from baseline, but low-zone mussels' mean T crit was unchanged. High- and low-zone mussels' mean maximum heart rate (HR) and resting HR decreased ∼12 and 35%, respectively. T...
Includes: Supplementary data
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Journal Articles
J Exp Biol (2020) 223 (5): jeb211250.
Published: 11 March 2020
... the cardiovascular responses to progressive hypoxia in four high-altitude Andean duck species compared with four related low-altitude populations in North America, tested at their native altitude. Ducks were exposed to stepwise decreases in inspired partial pressure of O 2 while we monitored heart rate, O 2...
Includes: Supplementary data