10.5061/DRYAD.KWH70RZ27
Cortez, Michael
0000-0003-2555-7684
Florida State University
Duffy, Meghan
0000-0002-8142-0802
University of Michigan-Ann Arbor
Data from: The context dependent effects of host competence, competition,
and the pathogen transmission mode on disease prevalence
Dryad
dataset
2021
FOS: Biological sciences
National Science Foundation
https://ror.org/021nxhr62
DEB-1748729
National Science Foundation
https://ror.org/021nxhr62
DEB-2015280
National Science Foundation
https://ror.org/021nxhr62
DEB-2015280
2021-04-15T00:00:00Z
2021-04-15T00:00:00Z
en
864244 bytes
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CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
Biodiversity in communities is changing globally, including the gain and
loss of host species in host-pathogen communities. Increased host
diversity can cause infection prevalence in a focal host to increase
(amplification) or decrease (dilution). However, it is unclear what
general rules govern the context dependent effects, in part because
theories for pathogens with different transmission modes have developed
largely independently. Using a two-host model, we explore how the
pathogen transmission mode and characteristics of a second host (disease
competence and competitive ability) influence disease prevalence in a
focal host. Our work shows how the theories for pathogens with
environmental transmission, density-dependent direct transmission, and
frequency-dependent direct transmission can be unified. Our work also
identifies general rules about how host and pathogen characteristics
affect amplification/dilution. For example, higher competence hosts
promote amplification, unless they are strong interspecific competitors;
strong interspecific competitors promote dilution, unless they are large
sources of new infections; and dilution occurs under frequency-dependent
direct transmission more than density-dependent direct transmission,
unless interspecific host competition is sufficiently strong. Our work
helps explain how the characteristics of the pathogen and a second host
affect disease prevalence in a focal host.
These files are Maple and Matlab scripts for analyzing the model in
"The context dependent effects of host competence, competition, and
the pathogen transmission mode on disease prevalence" and generating
the figures in that study.