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Variable rate of ageing within species: insights from Darwin’s frogs
- Source :
- Biological Journal of the Linnean Society, Biological Journal of the Linnean Society, 2023, 138 (1), pp.68-74. ⟨10.1093/biolinnean/blac119⟩
- Publication Year :
- 2023
- Publisher :
- Wiley-Blackwell Publishing, Inc., 2023.
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Abstract
- Actuarial senescence, the increase in adult mortality risk with increasing age, is a widespread phenomenon across the animal kingdom. Although between-species variation in the rate of increase in mortality as organisms age (i.e. ageing rate) is now well documented, the occurrence of variation in ageing rate within a given species remains much more debatable. We evaluated the level of within-species variation in ageing rate in four populations of the southern Darwin’s frog (Rhinoderma darwinii) from Chile. Our results revealed strong among-population variation in ageing rates, and these were correlated with the population-specific generation time. A higher ageing rate occurred in populations where individuals exhibited a faster pace of life. Our results, along with recent studies in evolutionarily distant amphibian species, indicate that there can be substantial within-species variation in the rate of ageing, highlighting amphibians as emerging models to study the patterns and mechanisms of intraspecific variation in ageing rate.
Details
- ISSN :
- 00244066 and 10958312
- Database :
- OpenAIRE
- Journal :
- Biological Journal of the Linnean Society, Biological Journal of the Linnean Society, 2023, 138 (1), pp.68-74. ⟨10.1093/biolinnean/blac119⟩
- Accession number :
- edsair.doi.dedup.....91e3dcf53c80d072ca78dc8cf3ff398e
- Full Text :
- https://doi.org/10.5167/uzh-225000