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Keywords: Body temperature
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Journal Articles
J Exp Biol (2021) 224 (Suppl_1): jeb229211.
Published: 24 February 2021
...Andrew E. McKechnie; Alexander R. Gerson; Blair O. Wolf ABSTRACT Evaporative heat dissipation is a key aspect of avian thermoregulation in hot environments. We quantified variation in avian thermoregulatory performance at high air temperatures ( T a ) using published data on body temperature ( T b...
Includes: Supplementary data
Journal Articles
J Exp Biol (2021) 224 (1): jeb237743.
Published: 12 January 2021
... tolerance early in life. This is ecologically important because before full thermoregulatory capacity is attained, precocial chicks must switch between foraging and being brooded when their body temperature declines. Hence, we studied how cold tolerance during conditions similar to a feeding bout in the...
Journal Articles
J Exp Biol (2020) 223 (19): jeb229930.
Published: 01 October 2020
... observations of body temperature and metabolic rate, instead support the hypothesis that acute physiological control of insensible water loss serves a thermoregulatory purpose for endotherms. Modification of both cutaneous and respiratory avenues of evaporation may be involved, possibly via modification of...
Journal Articles
J Exp Biol (2020) 223 (11): jeb210286.
Published: 01 June 2020
...Itsumi Nakamura; Rui Matsumoto; Katsufumi Sato ABSTRACT It is generally assumed that the body temperature of large animals is less likely to change because of their large body size, resulting in a high thermal inertia and a smaller surface area to volume ratio. The goal of this study was to...
Journal Articles
J Exp Biol (2020) 223 (8): jeb219287.
Published: 27 April 2020
... response Arctic Body temperature Fever Innate immunity Thermoregulation Animals in seasonal environments face a thermal transition as summer turns to winter, with ambient temperature ( T a ) often fluctuating more than 50°C between seasons. Non-migratory and non-hibernating endotherms meet...
Includes: Supplementary data
Journal Articles
J Exp Biol (2020) 223 (8): jeb219790.
Published: 16 April 2020
... Ltd 2020 http://www.biologists.com/user-licence-1-1/ Summary: Facilitation of heat loss in blue tits allows increased female investment in innate immune function (self-maintenance) without compromising current reproduction. Body temperature Heat dissipation Immunology Life...
Includes: Supplementary data
Journal Articles
J Exp Biol (2019) 222 (19): jeb203695.
Published: 10 October 2019
... temperatures, humidity and oxygen levels. However, there has been limited research into avian thermoregulation during migration in extreme environments. This study aimed to investigate the effect of flight performance and high altitude on body temperature ( T b ) of free-flying bar-headed geese ( Anser indicus...
Includes: Supplementary data
Journal Articles
J Exp Biol (2018) 221 (17): jeb182121.
Published: 05 September 2018
..., target and background temperatures on response to a moving target. We presented each snake with a moving pendulum bob regulated at a series of six temperatures against a uniform background regulated at one of three temperatures. Snake body temperatures varied from 18 to 36°C. As expected, we found...
Includes: Supplementary data
Journal Articles
J Exp Biol (2018) 221 (15): jeb179812.
Published: 06 August 2018
... circadian clock gates the timing of daily torpor in response to energetic challenges by restricting the initiation of torpor to a specific circadian phase. Mice were implanted in the peritoneal cavity with a telemetry transmitter to measure locomotor activity and core body temperature (TA-F10, Data...
Includes: Supplementary data
Journal Articles
J Exp Biol (2018) 221 (13): jeb175836.
Published: 09 July 2018
... in the western North Pacific ( N =13) was 1.4–5.7 times higher ( Q 10 =1.8) than that of juveniles in the Mediterranean Sea ( Q 10 =5.4). To validate the high RMR values in the western North Pacific, the difference between core body temperature and ambient water temperature (Δ T b ) was estimated...
Journal Articles
J Exp Biol (2018) 221 (12): jeb171108.
Published: 20 June 2018
... kennicottii ), which occupy the Sonoran Desert of southwestern North America, an area of extreme heat and aridity. We exposed wild-caught birds to progressively increasing air temperatures ( T a ) and measured resting metabolic rate (RMR), evaporative water loss (EWL), body temperature ( T b ) and heat...
Journal Articles
J Exp Biol (2018) 221 (11): jeb176354.
Published: 05 June 2018
...Josef Virens; Alison Cree ABSTRACT Thermochron iButtons are commonly used by thermal biologists to continuously measure body temperature from animals. However, if unmodified, these devices are of a size that limits their use with very small animals. To allow iButtons to be used to study smaller...
Includes: Supplementary data
Journal Articles
J Exp Biol (2018) 221 (6): jeb168930.
Published: 23 March 2018
... conditions in two Australian parrots: the mulga parrot ( Psephotellus varius ; ∼55 g) and the galah ( Eolophus roseicapilla ; ∼265 g). At air temperatures ( T a ) exceeding body temperature ( T b ), both species showed increases in T b to maximum values around 43–44°C, accompanied by rapid increases in...
Journal Articles
J Exp Biol (2017) 220 (22): 4292–4304.
Published: 15 November 2017
... remains underdeveloped. We used an individual monitoring system to record body temperature and valve gaping behavior of rocky intertidal zone mussels ( Mytilus californianus ). Thirty individuals were selected from two mussel beds (wave-exposed and wave-protected) that differ in thermal regime...
Includes: Supplementary data
Journal Articles
J Exp Biol (2017) 220 (22): 4305–4319.
Published: 15 November 2017
... organisms may rely on other behaviors to cope with environmental stresses in these variable environments. We developed a monitoring system to track body temperature, valve gaping behavior and posture of individual mussels ( Mytilus californianus ) in field conditions in the rocky intertidal zone...
Includes: Supplementary data
Journal Articles
J Exp Biol (2017) 220 (18): 3280–3289.
Published: 15 September 2017
... =0.29; range: 0< r <0.50), in particular in the benign foraging environment. Variation in metabolic response to lower T a at least in part reflected differential body temperature ( T b ) regulation: early morning T b was lower at low T a , and more so in individuals with a weaker metabolic...
Includes: Supplementary data
Journal Articles
J Exp Biol (2017) 220 (18): 3290–3300.
Published: 15 September 2017
... cardinal, Abert's towhee and curve-billed thrasher. Using flow-through respirometry, we measured daytime resting metabolism, evaporative water loss and body temperature at air temperatures ( T air ) between 30 and 52°C. We found marked increases in resting metabolism above the upper critical temperature...
Includes: Supplementary data
Journal Articles
J Exp Biol (2017) 220 (17): 3095–3102.
Published: 01 September 2017
... ). Body temperature and activity patterns in free-living arctic ground squirrels . J. Mammal.   86 , 314 - 322 . 10.1644/BRG-224.1 Lowrey , P. L. and Takahashi , J. S. ( 2000 ). Genetics of the mammalian circadian system: photic entrainment, circadian pacemaker mechanisms, and...
Includes: Supplementary data
Journal Articles
J Exp Biol (2017) 220 (13): 2380–2386.
Published: 01 July 2017
... prone to using facultative heterothermy than generalists. We tested this hypothesis at the intraspecific level using male laboratory mice (C57BL/cmdb) fasted under different thermal conditions (20 and 10°C) and for different time periods (12–48 h). We predicted that variability of body temperature ( T b...
Journal Articles
J Exp Biol (2017) 220 (13): 2436–2444.
Published: 01 July 2017
... ( Cracticus torquatus ; ∼86 g) and apostlebird ( Struthidea cinerea ; ∼118 g). At air temperatures ( T a ) exceeding body temperature ( T b ), all five species showed increases in T b to maximum values around 44–45°C, accompanied by rapid increases in resting metabolic rate above clearly defined upper...