Life tables and graphs for Bahry (2022) - Equilibrium conditions in the evolution of senescence [MSc thesis, Carleton Univeristy]

Life table data, and derived quantities, for Equilibrium Conditions in the Evolution of Senescence (Bahry, 2022, MSc thesis); adapted from the supplementary data of (Jones et al., 2014). Life table data for human (Japan 2009), human (Aché hunter-gatherer), fruit fly, Soay sheep, freshwater hydra, and desert tortoise.

Basic life table quantities: age interval \((X)\); survival function \((l_X)\); and age-specific interval fecundity \((m_X)\). Derived quantities include interval average force of mortality; reproductive value; residual reproductive value; Hamilton's indicators of the age-specific forces of selection; and actual age-specific mortality vs. predicted age-specific mortality based on models treated in (Bahry, 2022).

In the original life tables of Jones et al. (2014), desert tortoises negatively senesce over the range of observed ages, but had a final observed cut-off age of 74; this causes reproductive value to artifactually fall to 0 as age-approached the cutoff. To get around this, I also used an extrapolated desert tortoise life table, assuming the age-74 mortality and fecundity rates remained constant until age 1000, then using the extrapolated life table to calculate reproductive value (and Hamilton's indicators) up to the cutoff age 74.

References

Bahry, D. (2022). Equilibrium Conditions in the Evolution of Senescence [Master's thesis, Carleton University].

Jones, O. R. et al. (2014). Diversity of ageing across the tree of life. Nature 505: 169–174. https://doi.org/10.1038/nature12789