High social status males experience accelerated epigenetic aging in wild baboons
Abstract
Aging, for virtually all life, is inescapable. However, within populations, biological aging rates vary. Understanding sources of variation in this process is central to understanding the biodemography of natural populations. We constructed a DNA methylation-based age predictor for an intensively studied wild baboon population in Kenya. Consistent with findings in humans, the resulting 'epigenetic clock' closely tracks chronological age, but individuals are predicted to be somewhat older or younger than their known ages. Surprisingly, these deviations are not explained by the strongest predictors of lifespan in this population, early adversity and social integration. Instead, they are best predicted by male dominance rank: high-ranking males are predicted to be older than their true ages, and epigenetic age tracks changes in rank over time. Our results argue that achieving high rank for male baboons—the best predictor of reproductive success—imposes costs consistent with a 'live fast, die young' life history strategy.
Data availability
All sequencing data generated during this study are available in the NCBI Sequence Read Archive (project accession PRJNA648767), and processed counts data are available in the Dryad digital repository (doi:10.5061/dryad.qjq2bvqf0).
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Baboon Epigenetic AgingSRA Project Accession, PRJNA648767.
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High social status males experience accelerated epigenetic aging in wild baboonsDryad Digital Repository, 10.5061/dryad.qjq2bvqf0.
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Papio cynocephalus EpigenomicsSRA Accession SRP058411.
Article and author information
Author details
Funding
National Science Foundation (IOS 1456832)
- Susan C Alberts
Center for Population Health and Aging (P30AG034424)
- Jenny Tung
Canadian Institute for Advanced Research
- Jenny Tung
National Institutes of Health (R01AG053308)
- Susan C Alberts
National Institutes of Health (R01AG053330)
- Elizabeth A Archie
National Institutes of Health (R01HD088558)
- Jenny Tung
National Institutes of Health (P01AG031719)
- Susan C Alberts
National Institutes of Health (F32HD095616)
- Rachel A Johnston
National Science Foundation (2018264636)
- Jordan A Anderson
Foerster-Bernstein Foundation (Postdoctoral Fellowship)
- Rachel A Johnston
North Carolina Biotechnology Center (2016-IDG-1013)
- Jenny Tung
The funders had no role in study design, data collection and interpretation, or the decision to submit the work for publication.
Ethics
Animal experimentation: Samples were obtained under approval from the Institutional Animal Care and Use Committee (IACUC) of Duke University (#A273-17-12) and adhered to all the laws and regulations of Kenya.
Copyright
© 2021, Anderson et al.
This article is distributed under the terms of the Creative Commons Attribution License permitting unrestricted use and redistribution provided that the original author and source are credited.
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Further reading
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- Evolutionary Biology
- Epidemiology and Global Health
- Microbiology and Infectious Disease
- Genetics and Genomics
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Competing for high social status speeds up aging in male baboons