Extended Data Fig. 7: The impact of host pace-of-life (columns) on the relative importance of reproduction-based versus survival-based population regulation in generating demographically competent age-structured host populations in which juvenile survival is equal to adult survival; this figure shows results for a pathogen with frequency-dependent transmission across a range of strengths of host population regulation (rows, strength increasing from bottom to top).

The y axis of each panel represents pathogen transmissibility and the x axis represents pathogen virulence (in terms of its effect on host mortality). Dark blue represents survival-based regulation producing much higher demographic competence. Bright green represents reproduction-based regulation producing much higher demographic competence. White represents survival-based and reproduction-based regulation producing a similar effect. Grey represents regions where neither reproduction-based nor survival-based regulation can maintain endemic disease in a starting population of 1000 hosts as a result of pathogen extinction. Dark grey represents regions where neither reproduction-based nor survival-based regulation can maintain endemic disease in a starting population of 1000 hosts as a result of host extinction.