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. 2018 Jun 20;285(1881):20180844. doi: 10.1098/rspb.2018.0844

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© 2018 The Authors.

Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited.

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Figure 4. — Evolution of juvenile susceptibility when transmission is frequency-dependent and the host experiences a diminishing trade-off in terms of the (a,b) reproduction rate or (c,d) maturation rate. Filled symbols indicate points at which evolved host population is driven extinct by the disease, and the vertical grey lines show the point at which the host population is initially viable (i.e. when β_J = β_A). The gap between the black and grey lines indicates where the host exhibits evolutionary suicide. Parameters as described in figure 1 with a₀ = 5, (in a,b), , (in c,d), , and β_A adjusted so that the age structure and disease structure of the population matches that when transmission is density-dependent.

Inline graphic — Evolution of juvenile susceptibility when transmission is frequency-dependent and the host experiences a diminishing trade-off in terms of the (a,b) reproduction rate or (c,d) maturation rate. Filled symbols indicate points at which evolved host population is driven extinct by the disease, and the vertical grey lines show the point at which the host population is initially viable (i.e. when β_J = β_A). The gap between the black and grey lines indicates where the host exhibits evolutionary suicide. Parameters as described in figure 1 with a₀ = 5, (in a,b), , (in c,d), , and β_A adjusted so that the age structure and disease structure of the population matches that when transmission is density-dependent.