Auer Sonya K, Bassar Ronald D, Salin Karine, Metcalfe Neil B
Institute of Biodiversity, Animal Health and Comparative Medicine, University of Glasgow, Glasgow G12 8QQ, UK
Department of Zoology, University of Oxford, Oxford OX1 3PS, UK.
J Exp Biol. 2016 Mar;219(Pt 5):631-4. doi: 10.1242/jeb.133678. Epub 2016 Jan 8.
Metabolic rate has been linked to several 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 might 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 with 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.
代谢率与健康的多个组成部分相关联，并且在一定程度上具有遗传性和可重复性。然而，即使在控制了测量之间的时间间隔之后，其可重复性在不同研究中仍可能有所不同。这种可重复性的一些差异可能是由于动物在测量之间所处环境条件的相对稳定性。我们比较了已发表的关于恒温动物在实验室和野外生活期间基础、静息和最大代谢率的可重复性估计值，这些测量是在两次测量的间隔期内进行的。我们发现，正如之前所证明的，可重复性会随着时间下降，但首次表明自由生活动物的估计值也比生活在更稳定实验室条件下的动物的估计值低得多。
