1. Repeatability of metabolic rate is lower for animals living under field versus laboratory conditions
- Author
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Neil B. Metcalfe, Sonya K. Auer, Ronald D. Bassar, and Karine Salin
- Subjects
030110 physiology ,0106 biological sciences ,0301 basic medicine ,Physiology ,Animals, Wild ,Aquatic Science ,Biology ,Intraspecific variation ,010603 evolutionary biology ,01 natural sciences ,Birds ,Heritability ,03 medical and health sciences ,Animal science ,Meta-Analysis as Topic ,Animals, Laboratory ,Animals ,Molecular Biology ,Ecology, Evolution, Behavior and Systematics ,Mammals ,Ecology ,Reproducibility of Results ,Repeatability ,Relative stability ,Insect Science ,Metabolic rate ,Animal Science and Zoology ,Intra-class correlation ,Basal Metabolism ,Consistency ,Energy Metabolism - Abstract
Metabolic rate has been linked to multiple components of fitness and is both heritable and repeatable to a certain extent. However, its repeatability can differ among studies, even after controlling for the time interval between measurements. Some of this variation in repeatability may be due to the relative stability of the environmental conditions in which the animals are living between measurements. We compared published repeatability estimates for basal, resting, and maximum metabolic rate from studies of endotherms living in the laboratory versus those living in the wild during the interval between measurements. We found that repeatability declines over time, as demonstrated previously, but show for the first time that estimates from free-living animals are also considerably lower than those from animals living under more stable laboratory conditions.
- Published
- 2016