| Species | MR measure | Fitness proxy | Reference |
| Laboratory studies | |||
| Microgale dobsoni (shrew tenrec) | RMR | Litter size, neonate mass, litter mass (+) | Stephenson and Racey, 1993 |
| Mus musculus (laboratory mouse) | RMR | Litter size (+), mean offspring mass (−) | Johnson et al., 2001 |
| Taeniopygia guttata (zebra finch) | DEE | Clutch size (+), clutch mass (+), brood mass (+) | Vezina et al., 2006 |
| Field studies | |||
| Bugula neritina (marine bryozoan) | Unspecified | Reproductive output (negative correlational) | Pettersen et al., 2016* |
| Cornu aspersum (garden snail) | SMR | Survival (stabilizing) | Bartheld et al., 2015* |
| Cyanistes caeruleus (blue tit) | BMR | Survival (+ and −) | Nilsson and Nilsson, 2016 |
| Helix aspersa (garden snail) | SMR | Juvenile survival (− and stabilizing) | Artacho and Nespolo, 2009* |
| Microtus agrestis (short-tailed field vole) | RMR | Over-winter survival (+) | Jackson et al., 2001 |
| Microtus oeconomus (root vole) | RMR | Survival (+) | Zub et al., 2014 |
| Myodes glareolus (bank vole) | BMR | Reproductive success (+) | Boratynski and Koteja, 2010* |
| Myodes glareolus (bank vole) | BMR | Over-winter survival (−) | Boratynski et al., 2010* |
| Salmo salar (Atlantic salmon) | MR | Survival (+, – and no relationship) | Robertsen et al., 2014 |
| Tamiasciurus hudsonicus (red squirrel) | RMR | Over-winter survival (−) | Larivee et al., 2010* |
| Tamiasciurus hudsonicus (red squirrel) | DEE | Annual reproductive success (+) | Fletcher et al., 2015* |
| Tamias striatus (eastern chipmunks) | RMR | Juvenile survival (stabilizing) | Careau et al., 2013* |
| Zootoca vivipara (common lizard) | RMR | Survival (−) | Artacho et al., 2015* |
| Species | MR measure | Fitness proxy | Reference |
| Laboratory studies | |||
| Microgale dobsoni (shrew tenrec) | RMR | Litter size, neonate mass, litter mass (+) | Stephenson and Racey, 1993 |
| Mus musculus (laboratory mouse) | RMR | Litter size (+), mean offspring mass (−) | Johnson et al., 2001 |
| Taeniopygia guttata (zebra finch) | DEE | Clutch size (+), clutch mass (+), brood mass (+) | Vezina et al., 2006 |
| Field studies | |||
| Bugula neritina (marine bryozoan) | Unspecified | Reproductive output (negative correlational) | Pettersen et al., 2016* |
| Cornu aspersum (garden snail) | SMR | Survival (stabilizing) | Bartheld et al., 2015* |
| Cyanistes caeruleus (blue tit) | BMR | Survival (+ and −) | Nilsson and Nilsson, 2016 |
| Helix aspersa (garden snail) | SMR | Juvenile survival (− and stabilizing) | Artacho and Nespolo, 2009* |
| Microtus agrestis (short-tailed field vole) | RMR | Over-winter survival (+) | Jackson et al., 2001 |
| Microtus oeconomus (root vole) | RMR | Survival (+) | Zub et al., 2014 |
| Myodes glareolus (bank vole) | BMR | Reproductive success (+) | Boratynski and Koteja, 2010* |
| Myodes glareolus (bank vole) | BMR | Over-winter survival (−) | Boratynski et al., 2010* |
| Salmo salar (Atlantic salmon) | MR | Survival (+, – and no relationship) | Robertsen et al., 2014 |
| Tamiasciurus hudsonicus (red squirrel) | RMR | Over-winter survival (−) | Larivee et al., 2010* |
| Tamiasciurus hudsonicus (red squirrel) | DEE | Annual reproductive success (+) | Fletcher et al., 2015* |
| Tamias striatus (eastern chipmunks) | RMR | Juvenile survival (stabilizing) | Careau et al., 2013* |
| Zootoca vivipara (common lizard) | RMR | Survival (−) | Artacho et al., 2015* |
Symbols in parentheses indicate the direction/form of significant selection on metabolic rates. BMR, basal metabolic rate; SMR, standard metabolic rate; DEE, daily energy expenditure; MR, maintenance metabolic rate. *These studies use a multiple regression framework, providing standardized and comparable estimates of selection [i.e the Lande and Arnold (1983) approach].