The energy savings-oxidative cost trade-off for migratory birds during endurance flight

eLife

Olivia Fatica¹  Kristen DeMoranville²  Barbara Pierce²  Lillie Langlois³  Wolfgang Goymann³  Scott McWilliams³  Edyta Sadowska⁴  Maciej Dzialo⁴  Ulf Bauchinger⁴  John R Speakman⁵  Lisa Trost⁶  Andrea Wittenzellner⁶  Amadeusz Bryla⁶  Sophia Engel⁶ 

[1] Institute of Biological and Environmental Sciences, University of Aberdeen, Scotland, United Kingdom;Department of Biology, Sacred Heart University, Fairfield, United States;Department of Natural Resources Science, University of Rhode Island, Kingston, United States;Institute of Environmental Sciences, Jagiellonian University, Kraków, Poland;Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, China;Max Planck Institute for Ornithology, Starnberg, Germany;

关键词: metabolic rate;    oxidative costs;    ecology;    metabolism;    migratory birds;   

DOI  :  10.7554/eLife.60626

来源: DOAJ

【 摘 要 】

Elite human and animal athletes must acquire the fuels necessary for extreme feats, but also contend with the oxidative damage associated with peak metabolic performance. Here, we show that a migratory bird with fuel stores composed of more omega-6 polyunsaturated fats (PUFA) expended 11% less energy during long-duration (6 hr) flights with no change in oxidative costs; however, this short-term energy savings came at the long-term cost of higher oxidative damage in the omega-6 PUFA-fed birds. Given that fatty acids are primary fuels, key signaling molecules, the building blocks of cell membranes, and that oxidative damage has long-term consequences for health and ageing, the energy savings-oxidative cost trade-off demonstrated here may be fundamentally important for a wide diversity of organisms on earth.

【 授权许可】

Unknown