Individual differences in the energy cost of self-maintenance (resting metabolic rate, RMR)
are substantial and the focus of an emerging research area. These differences may …

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 …

In this paper we show how animal personality could explain some of the large inter‐
individual variation in resting metabolic rate (MR) and explore methodological and …

Short-term evolutionary potential depends on the additive genetic variance in the
population. The additive variance is often measured as heritability, the fraction of the total …

Related individuals often have similar phenotypes, but this similarity may be due to the
effects of shared environments as much as to the effects of shared genes. We consider here …

Phenotypic plasticity and microevolution are the two primary means by which organisms
respond adaptively to local conditions. While these mechanisms are not mutually exclusive …

Repeatability studies are gaining considerable interest among physiological ecologists,
particularly in traits affected by high environmental/residual variance, such as whole-animal …

Resting metabolic rate (RMR) is responsible for up to 50% of total energy expenditure, and
so should be under strong selection pressure, yet it shows extensive intraspecific variation …

Basal metabolic rate (BMR) provides a widely accepted benchmark of metabolic
expenditure for endotherms under laboratory and natural conditions. While most studies …

The evolutionary causes of variation in metabolic rate within and among species are a topic
of enduring interest. Variation between individuals is the raw material on which natural …