Figures
Figure 1 | Local adaptation by the pathogen should
result in pathogens being better adapted to invade and replicate within
local hosts compared to novel hosts, on average. A) Density
plot showing theoretical distributions of pathogen performance when
pathogens are locally adapted to their hosts demonstrating that mean
pathogen performance is higher during interactions with local hosts
(solid red curve) relative to novel hosts (solid blue curve).B) Theoretical changes in performance that a single pathogen
might experience when shifting from a local to a random novel host
population (each gray line). Mean performance (dashed black line) is
lower in the novel host because the pathogen is not locally adapted to
invade it. However, certain stochastic host-pathogen interactions result
in very high performance in a new host (represented by the solid purple
line). Panel B is modified from Kaltz and Shykoff (1998). Both panels
were made using the same randomly generated datasets of theoretical
host-pathogen outcomes. Each curve in panel A was generated using 10000
points while panel B displays a random subset of 25 points for
simplicity.