Table 1 Parameters.
From: Host control and the evolution of cooperation in host microbiomes
Parameter | Description |
|---|---|
a | Investment in cooperation by the host. |
b | Investment in cooperation by symbionts. |
B | Expression of trait associated with cooperation by symbionts. |
c | Investment in symbiont control by the host. |
f | Cost of host control on symbionts: captures how much symbiont population size is reduced by control, which will indirectly affect the host by reducing its benefits. |
g | Cost of control to host e.g. physiological cost of an immune system. |
H(a, c) | Probability density of host individuals with cooperation level a and control level c. |
S(b) | Probability density of symbiont genotypes with cooperation level b. |
M | Rate of microbial immigration each host generation from a fixed environmental source population (proportion of resident population). |
m | Rate of environmental microbe immigration each symbiont generation within the host. |
pa | Effect of partner fidelity feedback on host individuals. |
pb | Effect of partner fidelity feedback on symbionts. |
q | Effect of host control on symbionts. |
W | Fitness of focal individual. |
x | Benefit to hosts of receiving symbiont cooperation. |
y | Benefit to symbionts of receiving hosts cooperation. |
R | Relatedness among symbionts (genetic similarity in the host within a species relative to the population mean). |
