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Keywords: resting metabolic rate
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Journal Articles
J Exp Biol (2020) 223 (10): jeb225185.
Published: 27 May 2020
... modulation of immune function during pregnancy in a non-mammalian vertebrate, we elicited an immune response in pregnant and non-pregnant pygmy rattlesnakes, Sistrurus miliarius , using lipopolysaccharide (LPS). Resting metabolic rate (RMR) was measured using flow-through respirometry. Immune function was...
Journal Articles
J Exp Biol (2019) 222 (22): jeb212738.
Published: 27 November 2019
... keyserlingi , elevate their metabolic rate under the risk of predation, allowing them to respond quicker and spend less time on foraging, reducing their exposure to predators. Argiope keyserlingi Predation Time allocation Attack behaviour Web structure Resting metabolic rate It is well...
Journal Articles
J Exp Biol (2018) 221 (24): jeb190066.
Published: 12 December 2018
... ecology. Energy is a fundamental currency to quantify these costs, as energetic trade-offs often exist between key fitness-related processes. Daily energy expenditure (DEE) comprises of resting metabolic rate (RMR) and energy available for activity, which are linked via the energy management strategy of...
Journal Articles
J Exp Biol (2018) 221 (21): jeb183749.
Published: 31 October 2018
... to litter size at different ambient temperatures. Golden hamsters reach 8–10 times resting metabolic rate when raising offspring under cold conditions, which is compatible with the findings from laboratory mice and other rodents. * Authors for correspondence ( sarah.ohrnberger@vetmeduni.ac.at...
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 (6): jeb168930.
Published: 23 March 2018
... resting metabolic rate above clearly defined upper critical limits of thermoneutrality and increases in evaporative water loss to levels equivalent to 700–1000% of baseline rates at thermoneutral T a . Maximum cooling capacity, quantified as the fraction of metabolic heat production dissipated...
Journal Articles
J Exp Biol (2017) 220 (19): 3488–3498.
Published: 01 October 2017
... approximately 4 ml of water by gavage prior to being placed in the metabolic chamber and again prior to their release. Caprimulgiformes Hyperthermia Respirometry Evaporative water loss Resting metabolic rate Heat tolerance limit Birds inhabiting hot subtropical deserts face significant...
Journal Articles
J Exp Biol (2017) 220 (18): 3290–3300.
Published: 15 September 2017
...) EWL evaporative water loss rate (g H 2 O h −1 ) HTL heat tolerance limit (°C) M b initial body mass (g) MHP metabolic heat production (=RMR) RMR resting metabolic rate (W) T air chamber air temperature (°C) T b body temperature (°C) T uc upper...
Includes: Supplementary data
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...
Journal Articles
J Exp Biol (2017) 220 (5): 844–855.
Published: 01 March 2017
..., resting metabolic rate (RMR), organ mass and physiological and biochemical markers of metabolic activity in the Chinese bulbul ( Pycnonotus sinensis ). Groups of Chinese bulbuls were acclimated in a laboratory to the following conditions: (1) warm and long photoperiod, (2) warm and short photoperiod, (3...
Journal Articles
J Exp Biol (2016) 219 (15): 2260–2264.
Published: 01 August 2016
... to disproportionately high rates of mortality at the end of lactation in this species. To examine and quantify metabolic changes associated with reproduction, we measured the resting metabolic rate (RMR) of a female sea otter across gestation, lactation and non-reproductive periods. Concurrently...
Journal Articles
J Exp Biol (2015) 218 (22): 3636–3646.
Published: 01 November 2015
... maintained low resting metabolic rates and low rates of evaporative water loss at their T uc (0.71 W and 1.20 g H 2 O h −1 , respectively), but were more sensitive to increasing air temperature, reaching their HTL at T air of 52°C. Mourning doves and white-winged doves maintained low resting metabolic rates...
Includes: Supplementary data
Journal Articles
J Exp Biol (2014) 217 (20): 3593–3596.
Published: 15 October 2014
... authors declare no competing financial interests. 26 5 2014 14 8 2014 © 2014. Published by The Company of Biologists Ltd 2014 Endothermy Multivariate mixed models Performance Resting metabolic rate RMR V O 2 ,max Metabolic rate (MR) is a fundamental measure in...
Journal Articles
J Exp Biol (2011) 214 (23): 4010–4020.
Published: 01 December 2011
... 1 h before a trial until its completion. sea turtle energetics accelerometry diving oxygen consumption rate exercise PDBA respiratory frequency body acceleration resting metabolic rate Marine turtles are large ectotherms with a general tropical to subtropical distribution...
Journal Articles
J Exp Biol (2011) 214 (21): 3605–3612.
Published: 01 November 2011
... bats, have relatively high resting metabolic rates and thermal conductances, which should aggravate their energetic dilemma ( Speakman, 2000 ; Speakman, 2005 ). As an adaptation to this, many bat species reduce their metabolic rate and use torpor to conserve energy ( Speakman and Thomas, 2003 ). Most...
Journal Articles
J Exp Biol (2011) 214 (6): 988–995.
Published: 15 March 2011
... driven by the ability of animals to dissipate body heat. To distinguish between the two mechanisms, body mass change, food intake, reproductive output (using litter size and mass) and serum prolactin (PRL) levels were measured in striped hamsters lactating at 23, 30 and 5°C. Resting metabolic rate (RMR...
Journal Articles
J Exp Biol (2010) 213 (2): 278–287.
Published: 15 January 2010
...L. C. Duarte; L. M. Vaanholt; R. E. Sinclair; Y. Gamo; J. R. Speakman SUMMARY Many studies have investigated the consequences of individual variation in resting metabolic rate at thermoneutrality (RMRt) on reproductive performance. Despite strong theoretical reasons for expecting such an...
Journal Articles
J Exp Biol (2007) 210 (21): 3838–3847.
Published: 01 November 2007
.... * Author for correspondence (e-mail: wangdh@ioz.ac.cn ) 21 8 2007 © The Company of Biologists Limited 2007 2007 body mass Brandt's voles ( Lasiopodomys brandtii ) energy intake leptin non-shivering thermogenesis capacity photoperiod history resting metabolic rate uncoupling...
Journal Articles
J Exp Biol (2007) 210 (11): 2013–2024.
Published: 01 June 2007
... kept mice at 90% of their individual maximum and measured several physiological and behavioural traits. At this high workload, mice increased wheel-running activity from an average of 10 to 20 km d –1 , and decreased food intake and body mass by approximately 20%. Mass-specific resting metabolic rate...
Journal Articles
J Exp Biol (2005) 208 (13): 2533–2538.
Published: 01 July 2005
...François Vézina; Tony D. Williams SUMMARY The metabolic cost of egg production in birds (passerines) has been measured as a 16–27% increase in basal or resting metabolic rate (BMR and RMR, respectively) when comparing non-breeding values with those in egg-producing individuals. However, available...