On the Utility of Uniformity in the Definition of Basal Rate of Metabolism

  title={On the Utility of Uniformity in the Definition of Basal Rate of Metabolism},
  author={Brian K. McNab},
  journal={Physiological Zoology},
  pages={718 - 720}
  • B. McNab
  • Published 1 November 1997
  • Environmental Science
  • Physiological Zoology
the intensity of similar or dissimilar components of the energy Energy expenditure is often used as a basis of ecological theory budget of different species or of the same species in different (e.g., Gadgil and Bossert 1970; Charnov 1976; Sibly and Calow environments. From this view, field measurements of energy 1986), and its study has been a means of examining the adjustexpenditure, as interesting as they are theoretically, are the ments made by vertebrates to the environments in which they… 
Behavioral and ecological factors account for variation in the mass-independent energy expenditures of endotherms
  • B. McNab
  • Biology
    Journal of Comparative Physiology B
  • 2014
The clearest demonstration of the direct impact of character states is the equality of energy expenditure in species convergent with species from other clades without any evidence of the clade to which the species belong.
Ecological, functional, and thermodynamic prerequisites and consequences of the origin and development of homoiothermy: A case study of avian energetics
The study is based on the results of the integrated measurement of the energy expenditure at rest and common activity in birds belonging to various systematic groups that display considerable
Comparative analyses of basal rate of metabolism in mammals: data selection does matter
A new, expanded BMR database reflecting compliance with standard criteria is provided and potential effects of differential selectivity on the results of comparative analyses are examined to indicate a need for due diligence when selecting BMR estimates and caution regarding results with small sample sizes.
Determinants of inter-specific variation in basal metabolic rate
Basal metabolic rate (BMR) is the rate of metabolism of a resting, postabsorptive, non-reproductive, adult bird or mammal, measured during the inactive circadian phase at a thermoneutral temperature.
Seasonal Metabolic Variation in Birds: Functional and Mechanistic Correlates
The influence of seasonal changes in temperature and climate on metabolic rates in birds has been a topic of interest to ornithologists and ecophysiologists for decades, and resting metabolic rate is considered as the metabolic rate measured under the standard conditions.
Reproductive Energy Expenditure, Intraspecific Variation and Fitness in Birds
Several studies have focused on the existence of some absolute maximum sustainable metabolic rate (MR); (2) scaling of MR and body mass; or (3) the relationship between daily energy expenditure (DEE).
Flexibility in metabolic rate in a small Afrotropical bird Zosterops virens.
Flexibility in avian basal metabolic rate seems to be linked to flexibility in the masses of certain organs and in the metabolic intensities of certain tissues, and depends primarily on body mass, but also on various environmental factors, including thermal acclimation and seasonal acclimatisation.
Basal metabolic rate of birds is associated with habitat temperature and precipitation, not primary productivity
To assess the relationship between environmental characteristics and metabolic rate in birds, collated BMR measurements for 92 populations representing 90 wild-caught species and examined the relationships between BMR and NPP, Ta, annual temperature range, precipitation and intra-annual coefficient of variation of precipitation (PCV).
Allometric scaling of mammalian metabolism
The 3/4 power scaling of RMRpp is part of a wider trend where, with the notable exception of cold-induced maximum MR, large herbivores are therefore less likely to be postabsorptive when MR is measured, and are likely to have a relatively high MR if not post absorptionptive.
Sources of variation in winter basal metabolic rate in the great tit
This study highlights the need to standardize BMR measurements when testing predictions about metabolic rates from individuals of wild populations by finding year, locality, date, previous week average minimum temperature, age, body mass and the interaction between locality and year were the factors retained in the final model.


Measurement of Basal Metabolic Rates: Don't Lose Sight of Reality in the Quest for Comparability
Gallivan (1992) reaches the conclusion that all previous attempts to measure BMRs of cetacea are worthless because they do not conform to the original criteria set by Kleiber for measurement of basal metabolism.
Periods of Nutritional Stress in the Annual Cycles of Endotherms: Fact or Fiction?
The main thesis of this essay is that the diversity and potency of such compensatory mechanisms haveoften been underrated, and hence the frequency and intensity of nutritional stress in free-living animals have often been exaggerated.
Basal metabolic rates and thermoregulatory abilities in four small mammals
Basal metabolism, resting metabolism, thermal neutral zone, and conductance were assessed and compared and it was concluded that S. vagrans is as good a thermoregulator as are the rodent species studied.
Body size and metabolism
In spite of the theoretical weakness of the surface law, the computation of basal metabolism to the unit of the body surface seems at present the most satisfactory method available of equalizing experimental results for differences in the size of experimental animals.
Comparative temperature regulation of African . 1930 . Recent advances in the study of basal metabo - and European shrews
  • Comp . Biochem . Physiol .
  • 1990
Optimal foraging : attack strategy of a man - water vertebrates on oceanic islands
  • Am . Nat .