ArticlePloS one2014
Maximum running speed of captive bar-headed geese is unaffected by severe hypoxia.
Article in PloS one, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
13 citing papers in PubMed, 38 citations in OpenAlex.
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- Blood oxygen transport and depletion in diving emperor penguins.The Journal of experimental biology · 2024Article
- Editorial: Untangling the oxygen transport cascade: a tribute to Peter Frappell (Frapps).Journal of comparative physiology. B, Biochemical, systemic, and environmental physiology · 2021Article
- Simulation experiment to test strategies of geomagnetic navigation during long-distance bird migration.Movement ecology · 2021Article
- Fusion of wildlife tracking and satellite geomagnetic data for the study of animal migration.Movement ecology · 2021Article
- Article
- High-altitude champions: birds that live and migrate at altitude.Journal of applied physiology (Bethesda, Md. : 1985) · 2017Review
- The physiological basis of bird flight.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2016Review
- Costs of locomotion in polar bears: when do the costs outweigh the benefits of chasing down terrestrial prey?Conservation physiology · 2016Article
- Fuel metabolism in Canada geese: effects of glucagon on glucose kinetics.American journal of physiology. Regulatory, integrative and comparative physiology · 2015Article
- How bar-headed geese fly over the Himalayas.Physiology (Bethesda, Md.) · 2015Review
Corrections and comments
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Authors and funding
7 authors at 6 institutions in 4 countries.
Funding
Abstract
While bar-headed geese are renowned for migration at high altitude over the Himalayas, previous work on captive birds suggested that these geese are unable to maintain rates of oxygen consumption while running in severely hypoxic conditions. To investigate this paradox, we re-examined the running performance and heart rates of bar-headed geese and barnacle geese (a low altitude species) during exercise in hypoxia. Bar-headed geese (n = 7) were able to run at maximum speeds (determined in normoxia) for 15 minutes in severe hypoxia (7% O2; simulating the hypoxia at 8500 m) with mean heart rates of 466±8 beats min-1. Barnacle geese (n = 10), on the other hand, were unable to complete similar trials in severe hypoxia and their mean heart rate (316 beats.min-1) was significantly lower than bar-headed geese. In bar-headed geese, partial pressures of oxygen and carbon dioxide in both arterial and mixed venous blood were significantly lower during hypoxia than normoxia, both at rest and while running. However, measurements of blood lactate in bar-headed geese suggested that anaerobic metabolism was not a major energy source during running in hypoxia. We combined these data with values taken from the literature to estimate (i) oxygen supply, using the Fick equation and (ii) oxygen demand using aerodynamic theory for bar-headed geese flying aerobically, and under their own power, at altitude. This analysis predicts that the maximum altitude at which geese can transport enough oxygen to fly without environmental assistance ranges from 6,800 m to 8,900 m altitude, depending on the parameters used in the model but that such flights should be rare.
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Registered trials
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