ArticleThe Journal of experimental biology2021
A test of altitude-related variation in aerobic metabolism of Andean birds.
Article in The Journal of experimental biology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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4 citing papers in PubMed.
- Acute hypoxia suppresses blood glycolysis in saker falcons (Zoological research · 2025Article
- Stronger Evidence for Relaxed Selection Than Adaptive Evolution in High-elevation Animal mtDNA.Molecular biology and evolution · 2025Article
- Stronger evidence for relaxed selection than adaptive evolution in high-elevation animal mtDNA.bioRxiv : the preprint server for biology · 2024Article
- Network structure of avian mixed-species flocks decays with elevation and latitude across the Andes.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2023Article
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4 authors.
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Abstract
Endotherms at high altitude face the combined challenges of cold and hypoxia. Cold increases thermoregulatory costs, and hypoxia may limit both thermogenesis and aerobic exercise capacity. Consequently, in comparisons between closely related highland and lowland taxa, we might expect to observe consistent differences in basal metabolic rate (BMR), maximal metabolic rate (MMR) and aerobic scope. Broad-scale comparative studies of birds reveal no association between BMR and native elevation, and altitude effects on MMR have not been investigated. We tested for altitude-related variation in aerobic metabolism in 10 Andean passerines representing five pairs of closely related species with contrasting elevational ranges. Mass-corrected BMR and MMR were significantly higher in most highland species relative to their lowland counterparts, but there was no uniform elevational trend across all pairs of species. Our results suggest that there is no simple explanation regarding the ecological and physiological causes of elevational variation in aerobic metabolism.
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