Tomášek Oldřich, Bobek Lukáš, Kauzálová Tereza, Kauzál Ondřej, Adámková Marie, Horák Kryštof, Kumar Sampath Anandan, Manialeu Judith Pouadjeu, Munclinger Pavel, Nana Eric Djomo, Nguelefack Télesphore Benoît, Sedláček Ondřej, Albrecht Tomáš
Institute of Vertebrate Biology, Czech Academy of Sciences, Brno, Czechia.
Faculty of Science, Department of Zoology, Charles University, Prague, Czechia.
Ecol Lett. 2022 Oct;25(10):2203-2216. doi: 10.1111/ele.14097. Epub 2022 Sep 9.
Macrophysiological research is vital to our understanding of mechanisms underpinning global life history variation and adaptation to diverse environments. Here, we examined latitudinal and elevational variation in a key substrate of energy metabolism and an emerging physiological component of pace-of-life syndromes, blood glucose concentration. Our data, collected from 61 European temperate and 99 Afrotropical passerine species, revealed that baseline blood glucose increases with both latitude and elevation, whereas blood glucose stress response shows divergent directions, being stronger at low latitudes and high elevations. Low baseline glucose in tropical birds, compared to their temperate counterparts, was mainly explained by their low fecundity, consistent with the slow pace-of-life syndrome in the tropics. In contrast, elevational variation in this trait was decoupled from fecundity, implying a unique montane pace-of-life syndrome combining slow-paced life histories with fast-paced physiology. The observed patterns suggest that pace-of-life syndromes do not evolve along the single fast-slow axis.
宏观生理学研究对于我们理解支撑全球生活史变异和适应多样环境的机制至关重要。在此,我们研究了能量代谢的一个关键底物以及生活节奏综合征中一个新兴生理成分——血糖浓度的纬度和海拔变化。我们从61种欧洲温带和99种非洲热带雀形目鸟类收集的数据显示,基础血糖水平随纬度和海拔升高而增加,而血糖应激反应呈现不同方向,在低纬度和高海拔地区更强。与温带鸟类相比,热带鸟类的基础血糖水平较低,这主要是由它们的低繁殖力所致,这与热带地区缓慢的生活节奏综合征一致。相比之下,该性状的海拔变化与繁殖力脱钩,这意味着一种独特的山地生活节奏综合征,它将缓慢的生活史与快速的生理状态结合在一起。观察到的模式表明,生活节奏综合征并非沿着单一的快-慢轴进化。