Hemotological and morphometric measurements from geladas
Authors/Creators
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Chiou, Kenneth L.1
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Janiak, Mareike C.2
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Schneider-Crease, India A.1
- Sen, Sharmi3
- Ayele, Ferehiwot4
- Chuma, Idrissa S.5
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Knauf, Sascha6
- Lemma, Alemayehu4
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Signore, Anthony V.7
- D'Ippolito, Anthony M.8
- Abebe, Belayneh9
- Haile, Abebaw Azanaw10
- Kebede, Fanuel10
- Fashing, Peter J.11
- Nguyen, Nga11
- McCann, Colleen12
- Houck, Marlys L.13
- Wall, Jeffrey D.14
- Burrell, Andrew S.15
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Bergey, Christina M.16
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Rogers, Jeffrey17
- Phillips-Conroy, Jane E.18
- Jolly, Clifford J.15
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Melin, Amanda D.19
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Storz, Jay F.7
- Lu, Amy20
- Beehner, Jacinta C.3
- Bergman, Thore J.3
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Snyder-Mackler, Noah1
- 1. Arizona State University
- 2. University of Salford
- 3. University of Michigan–Ann Arbor
- 4. Addis Ababa University
- 5. Tanzania National Parks
- 6. German Primate Center
- 7. University of Nebraska–Lincoln
- 8. Duke University
- 9. African Wildlife Foundation
- 10. Ethiopian Wildlife Conservation Authority*
- 11. California State University, Fullerton
- 12. Wildlife Conservation Society
- 13. San Diego Zoo Wildlife Alliance*
- 14. University of California, San Francisco
- 15. New York University
- 16. Rutgers, The State University of New Jersey
- 17. Baylor College of Medicine
- 18. Washington University School of Medicine*
- 19. University of Calgary
- 20. Stony Brook University
Description
Primates have adapted to numerous environments and lifestyles but very few species are native to high elevations. Here, we investigated high-altitude adaptations in the gelada (Theropithecus gelada), a monkey endemic to the Ethiopian Plateau. We examined genome-wide variation in conjunction with measurements of haematological and morphological traits. Our new gelada reference genome is highly intact and assembled at chromosome-length levels. Unexpectedly, we identified a chromosomal polymorphism in geladas that could potentially contribute to reproductive barriers between populations. Compared to baboons at low altitude, we found that high-altitude geladas exhibit significantly expanded chest circumferences, potentially allowing for greater lung surface area for increased oxygen diffusion. We identified gelada-specific amino acid substitutions in the alpha-chain subunit of adult haemoglobin but found that gelada haemoglobin does not exhibit markedly altered oxygenation properties compared to lowland primates. We also found that geladas at high altitude do not exhibit elevated blood haemoglobin concentrations, in contrast to the normal acclimatization response to hypoxia in lowland primates. The absence of altitude-related polycythaemia suggests that geladas are able to sustain adequate tissue-oxygen delivery despite environmental hypoxia. Finally, we identified numerous genes and genomic regions exhibiting accelerated rates of evolution, as well as gene families exhibiting expansions in the gelada lineage, potentially reflecting altitude-related selection. Our findings lend insight into putative mechanisms of high-altitude adaptation while suggesting promising avenues for functional hypoxia research.
Notes
Files
gelada_hemoglobin.txt
Additional details
Related works
- Is cited by
- 10.1038/s41559-022-01703-4 (DOI)