The evolution of environmentally mediated social interactions and posthumous spite under isolation by distance
Fig 7
Scaled relatedness and selection under survival effects in a 1D lattice model.
Panels A-B: Scaled relatedness κk,t in a 1D lattice model under survival effects (from Box 3 with in panel A and
in panel B; other parameters: same as in Fig 4A). These panels show that genetic value decays away from the focal deme especially quickly when baseline survival is high (compare panels A and B). Otherwise, these profiles of scaled relatedness are similar to to those in Fig 4A, which suggests that selection acts similarly when the trait affects survival or fecundity. Panel C: Parameter region where selection favours the evolution of helping (Ω > 0) or harming (Ω < 0) under survival effects with adult survival probability
on the x-axis and environmental decay ϵ on the y-axis (Ω computed from Eq 31 using eq. A-129 in S1 Text; other parameters: same as in Fig 4B, i.e. under long-range movement of the commons). See S1 Data for how to generate these figures using Mathematica.