1. Birds Do It, Bees Do It, We Do It: Contributions of Theoretical Modelling to Understanding the Shape of Ageing across the Tree of Life
Gerontology 2012;58:481– DOI: /
© 2012 S. Karger AG, Basel - CC BY-NC 3.0

2. Birds Do It, Bees Do It, We Do It: Contributions of Theoretical Modelling to Understanding the Shape of Ageing across the Tree of Life
Gerontology 2012;58:481– DOI: /
© 2012 S. Karger AG, Basel - CC BY-NC 3.0

3. Birds Do It, Bees Do It, We Do It: Contributions of Theoretical Modelling to Understanding the Shape of Ageing across the Tree of Life
Gerontology 2012;58:481– DOI: /
Fig. 1. Example of mortality patterns for two species that differ in pace but share the same shape of ageing. The ‘fast’ species lives at twice the speed of the ‘slow’ species, with a respective life expectancy of 10 versus 20 years. For both species, over the expected length of life, mortality increases 7.5-fold; in the former from a level of 0.02 to 0.15, and in the latter from 0.01 to Examples are calculated assuming Gompertz mortality, given by a exp(bx), with parameters a = 0.1 and b = 0.1 for the slow species and a = 0.2 and b = 0.2 for the fast species.
© 2012 S. Karger AG, Basel - CC BY-NC 3.0