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Keywords: Resting metabolic rate
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Journal Articles
J Exp Biol (2021) 224 (17): jeb242608.
Published: 13 September 2021
... of discrete severities. The costs and consequences of the immune response were assessed through comparisons of change in resting metabolic rate (RMR), energy metabolites (glucose, glycerol, triglycerides), innate immunity (bactericidal ability), sprint speed and oxidative status (antioxidant capacity...
Journal Articles
J Exp Biol (2021) 224 (14): jeb238279.
Published: 19 July 2021
... that the emission of contact calls significantly increases oxygen consumption; vocal individuals spent, on average, 12.42 kJ more during social signaling trials than they spent during silent trials. We also found that as resting metabolic rate increased in males, there was a decreasing probability that they would...
Includes: Supplementary data
Journal Articles
J Exp Biol (2020) 223 (10): jeb225185.
Published: 27 May 2020
... and the 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...
Journal Articles
J Exp Biol (2019) 222 (22): jeb212738.
Published: 27 November 2019
... allocation Attack behaviour Web structure Resting metabolic rate It is well understood that the risk of predation induces notable changes in the behaviour and physiology of animals ( Lima, 1998 ; Lima and Dill, 1990 ). Theoretical ( Charnov, 1976 ; MacArthur and Pianka, 1966 ) and empirical...
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...
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
... in 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
...@unm.edu ) This study builds on earlier seminal studies on nightjars, which recorded their remarkable ability to tolerate heat ( Bartholomew et al., 1962 ; Lasiewski and Dawson, 1964 ). We worked on heat-acclimated, recently captured birds and found that the low resting metabolic rate observed...
Journal Articles
J Exp Biol (2017) 220 (18): 3290–3300.
Published: 15 September 2017
... measurements in seven Sonoran Desert passerine bird species show that heat tolerance limits did not scale with body mass among species, but were ∼50°C for all species. Evaporative water loss Resting metabolic rate Upper critical temperature Body temperature Heat tolerance limit Passerines...
Includes: Supplementary data
Journal Articles
J Exp Biol (2017) 220 (13): 2436–2444.
Published: 01 July 2017
... 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 critical limits...
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, measurements were made...
Journal Articles
J Exp Biol (2015) 218 (22): 3636–3646.
Published: 01 November 2015
... 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
... metabolic rate RMR V O 2 ,max © 2014. Published by The Company of Biologists Ltd 2014 26 5 2014 14 8 2014 Competing interests The authors declare no competing financial interests. Author contributions W.A.B. designed the study; W.A.B., B.J.H. and T.W.O...
Journal Articles
J Exp Biol (2011) 214 (23): 4010–4020.
Published: 01 December 2011
... oxygen consumption rate exercise PDBA respiratory frequency body acceleration resting metabolic rate Marine turtles are large ectotherms with a general tropical to subtropical distribution. Six out of seven marine turtle species are currently listed in the International Union...
Journal Articles
J Exp Biol (2011) 214 (21): 3605–3612.
Published: 01 November 2011
... the long periods that they spend inactive in day roosts. In addition to high energy expenditures of flight, small animals, including bats, have relatively high resting metabolic rates and thermal conductances, which should aggravate their energetic dilemma ( Speakman, 2000 ; Speakman, 2005...
Journal Articles
J Exp Biol (2011) 214 (6): 988–995.
Published: 15 March 2011
... be 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...
Journal Articles
J Exp Biol (2007) 210 (21): 3838–3847.
Published: 01 November 2007
..., at day 15 (the time when animals began to eat solid food) and at weaning to examine the effect of preweaning photoperiod on preweaning growth. After photoperiod transfer, body mass was monitored once a week. Energy intake, resting metabolic rate (RMR) and NST were each measured from 22 days of age...