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Keywords: Daily energy expenditure
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Journal Articles
J Exp Biol (2022) 225 (Suppl_1): jeb243095.
Published: 8 March 2022
... turtles and used the CHEF to determine FMR while actively or passively thermoregulating. Comparing an individual's actual FMR to the rate calculated assuming absence of thermoregulation revealed that painted turtles, a partial thermoregulator, elevate their daily energy expenditure (DEE) by about 25...
Includes: Supplementary data
Journal Articles
J Exp Biol (2020) 223 (23): jeb228585.
Published: 2 December 2020
... of environmental interactions, behavioral flexibility and morphological constraints on energy balance, we used doubly labeled water to measure the at-sea daily energy expenditure (DEE) of two sympatrically breeding seabirds, Campbell ( Thalassarche impavida ) and grey-headed ( Thalassarche chrysostoma...
Includes: Supplementary data
Journal Articles
J Exp Biol (2020) 223 (2): jeb219337.
Published: 28 January 2020
... rule in birds and mammals . Physiol. Biochem. Zool.   89 , 251 - 261 . 10.1086/686322 Ricklefs , R. E. , Konarzewski , M. and Daan , S. ( 1996 ). The relationship between basal metabolic rate and daily energy expenditure in birds and mammals . Am. Nat.   147 , 1047 - 1071...
Includes: Supplementary data
Journal Articles
J Exp Biol (2019) 222 (14): jeb199513.
Published: 19 July 2019
... or reduce energy expenditure on maintenance. Here, a song bird is shown to do the latter, but only in the short term. Ficedula hypoleuca Increased-intake hypothesis Compensation hypothesis Basal metabolic rate Daily energy expenditure Feeding frequency From an energetic point of view...
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 (2017) 220 (18): 3280–3289.
Published: 15 September 2017
... temperatures. BMR SMR Repeatability Foraging Daily energy expenditure Body temperature Energy is an essential resource for reproduction and survival ( Boutin, 1990 ; Martin, 1987 ; Prevedello et al., 2013 ; Ruffino et al., 2014 ). The energy an individual spends daily on all activities...
Includes: Supplementary data
Journal Articles
J Exp Biol (2015) 218 (16): 2585–2593.
Published: 1 August 2015
... mammals become diurnal when energetically challenged by cold or hunger. The circadian thermo-energetics (CTE) hypothesis predicts that diurnal activity patterns reduce daily energy expenditure (DEE) compared with nocturnal activity patterns. Here, we tested the CTE hypothesis by quantifying the energetic...
Includes: Supplementary data
Journal Articles
J Exp Biol (2014) 217 (20): 3718–3732.
Published: 15 October 2014
.... , Ellison   G. T. H. , Skinner   J. D. ( 1994 ). Interindividual and intraindividual variation in daily energy expenditure of the pouched mouse (Saccostomus campestris) . Funct. Ecol.   8 , 336 - 342 . Speakman   J. R. , Król   E. , Johnson   M. S. ( 2004 ). The functional...
Journal Articles
J Exp Biol (2013) 216 (17): 3358–3368.
Published: 1 September 2013
...Deng-Bao Yang; Li Li; Lu-Ping Wang; Qing-Sheng Chi; Catherine Hambly; De-Hua Wang; John R. Speakman SUMMARY We evaluated factors limiting lactating Mongolian gerbils ( Meriones unguiculatus ) at three temperatures (10, 21 and 30°C). Energy intake and daily energy expenditure (DEE) increased...
Includes: Supplementary data
Journal Articles
J Exp Biol (2012) 215 (22): 3989–3996.
Published: 15 November 2012
..., 2007 ). * Author for correspondence ( tania.gonzalez@uni-ulm.de ) 21 11 2011 22 7 2012 © 2012. 2012 Glossophaginae Phyllostomidae foraging behaviour daily energy expenditure Specializations on particular food resources are frequently correlated...
Journal Articles
J Exp Biol (2012) 215 (18): 3161–3168.
Published: 15 September 2012
...Magella Guillemette; Patrick J. Butler SUMMARY There is considerable interest in understanding how the energy budget of an endotherm is modulated from a physiological and ecological point of view. In this paper, we used daily (24 h) heart rate ( f H24 ), as a proxy of daily energy expenditure (DEE...
Journal Articles
J Exp Biol (2012) 215 (14): 2418–2424.
Published: 15 July 2012
... acclimatization is accomplished by coordinated phenotypic plasticity of metabolic systems. We measured summit metabolism ( V̇ O 2 ,sum ), daily energy expenditure (DEE) and muscle oxidative capacity under both winter (December to January) and breeding (May to June) conditions. We hypothesize that: (1) rates...
Journal Articles
J Exp Biol (2011) 214 (19): 3206–3217.
Published: 1 October 2011
...-wavelength conditions ( David-Gray et al., 1998 ; Janssen et al., 2000 ). * Author for correspondence ( zubidat3@013.net ) 2 7 2011 © 2011. 2011 cosinor analysis daily energy expenditure daily rhythm melatonin suppression percentage change in body mass retinal photoreceptor...
Includes: Supplementary data
Journal Articles
J Exp Biol (2009) 212 (21): 3455–3465.
Published: 1 November 2009
... the difference between metabolizable energy intake and daily energy expenditure measured by doubly labelled water, at 30°C was 23.3 kJ day –1 lower than that at 21°C on days 14–16 of lactation. As for reproductive performance, there was a difference in the response to the higher temperature between mothers...
Journal Articles
J Exp Biol (2009) 212 (8): 1101–1105.
Published: 15 April 2009
...Tony D. Williams; François Vézina; John R. Speakman SUMMARY It is axiomatic that whole-animal metabolism, measured for example as daily energy expenditure (DEE), plays a central role in determining reproductive success and survival (fitness) in all organisms. Nevertheless, strong evidence...
Journal Articles
J Exp Biol (2008) 211 (24): 3871–3878.
Published: 15 December 2008
... resting. Our experiment clearly shows that a daily T a cycle affects the thermoregulatory behaviour and energetics of these small bats. More generally, these results demonstrate the critical influence of behavioural decisions on the daily energy expenditure of small heterothermic mammals. The cost...
Journal Articles
J Exp Biol (2007) 210 (23): 4233–4243.
Published: 1 December 2007
... of Biologists Limited 2007 2007 heat dissipation limit lactation digestive efficiency metabolizable energy intake daily energy expenditure milk production pup energy content The sustained maximum rate of energy intake (SusEI) is an important trait that imposes an upper constraint on animal...
Journal Articles
J Exp Biol (2007) 210 (11): 2013–2024.
Published: 1 June 2007
... to 0.98 kJ g –1 d –1 , whereas daily energy expenditure slightly increased from 2.09 to 2.25 kJ g –1 d –1 . Costs of running decreased from 2.3 to 1.6 kJ km –1 between baseline and workload conditions. At high workloads, animals were in a negative energy balance, resulting in a sharp reduction in fat mass...
Journal Articles
J Exp Biol (2003) 206 (23): 4267–4281.
Published: 1 December 2003
... methods: (1) as the difference between metabolizable energy intake and daily energy expenditure of the female, (2) from female water turnover, (3) from pup water turnover and (4) from the energy budget of the litter. We assessed these four methods by comparing their accuracy, precision and sensitivity...
Includes: Supplementary data
Journal Articles
J Exp Biol (2003) 206 (18): 3211–3218.
Published: 15 September 2003
... for chicks of several age classes, starting three days prior to hatching until fledging at an age of approximately 30 days. Daily energy expenditure in the field, measured using the doubly labelled water technique, did not differ between treatments or between sexes. Oxygen consumption measured in birds...