Kaliński Adam, Glądalski Michał, Markowski Marcin, Skwarska Joanna, Wawrzyniak Jarosław, Bańbura Jerzy
Department of Experimental Zoology and Evolutionary Biology, Faculty of Biology and Environmental Protection, University of Łódź, Banacha 12/16, 90-237 Łódź, Poland.
Conserv Physiol. 2022 Nov 24;10(1):coac072. doi: 10.1093/conphys/coac072. eCollection 2022.
Ketone body levels, among other biochemical blood indices, are important indicators of the physiological condition of birds. Plasma ketone as an indicator of fasting and lipid use is strongly linked to demanding phases in the avian life cycle, such as migration or wintering. The main goal of this study was to check whether ketone body levels differ between the habitats in which individuals stay in winter. To test the above prediction, we used a portable point-of-care device to measure ketone body levels in wintering great tits (). We assumed that wintering in distinct habitats that differ structurally, particularly with respect to food availability, would affect the metabolic performance of birds and their physiological condition. Individual great tits were trapped in mist nets and blood-sampled in three distinct locations within the city: an urban parkland, the deciduous forest and a city centre. As expected, we showed that the mean ketone level was significantly higher in the area where artificial feeding was irregular than in two areas of regular feeding, indicating the more intense fasting state there. We also checked if the level of ketone bodies differs with respect to the sex of an individual, but we found no such difference.
酮体水平以及其他血液生化指标，是鸟类生理状况的重要指标。血浆酮作为禁食和脂质利用的指标，与鸟类生命周期中的关键阶段密切相关，如迁徙或越冬。本研究的主要目的是检验冬季个体所栖息的不同栖息地之间酮体水平是否存在差异。为了验证上述预测，我们使用了一种便携式即时检测设备来测量越冬大山雀的酮体水平。我们假设，在结构上存在差异、尤其是在食物可获取性方面不同的独特栖息地中越冬，会影响鸟类的代谢表现及其生理状况。将个体大山雀困于捕雾网中，并在城市内三个不同地点采集血液样本：城市公园绿地、落叶林和市中心。正如预期的那样，我们发现人工投喂不规律区域的平均酮体水平显著高于两个有规律投喂区域，这表明该区域的禁食状态更为强烈。我们还检查了酮体水平是否因个体性别而异，但未发现此类差异。
