Table 1. Description of parameters.
| Values | References | |
|---|---|---|
| Demographic | ||
| Longevity (number of days before natural death occurs) | ~EXP(λ), λ = 2 years | 17,42 (Table 6, pg 173) |
| Daily conception probability (CP) (by age class of females) | Daily values grouped by calendar month; patterns included two weak birth pulses; annual ranges by age class were: 0.00044–0.0071 (<1 year) 0.0022–0.036 (1–3 years) 0.0044–0.071 (>3 years) | Estimated from: 17 (Fig. 1 pg 67) |
| Scaling factor on CP (allows annual % population growth to range from X to Y) | 0.01–10 | |
| Litter size (number of viable offspring per litter) | Fixed by age class 2 piglets (<1 year) 5 piglets (1–3 years) 7 piglets (>3 years) | 43, 44, 45 |
| Age at reproductive maturity (females only) (minimum age at which females may conceive) | 6 months | 46,47 |
| Minimum time between farrowing and conception | 3 months | 48 |
| Gestation time | 115 days | 49 |
| Age of male dispersal from group | 5 months | 50,51 |
| Age that male groups dissolve and males become independent | 2 years | expert opinion |
| Dispersal distance (DD) (both males and females) | 0.1–15 km | 52 |
| Maximum family group size (K) (carrying capacity for family groups; at carrying capacity some females will disperse and form new family groups) | 5–50 feral swine | expert opinion |
| Initial density (ID) | 1–50 feral swine/km2 | 17 (Table 4 pg 169–172) |
| Initial age distribution (proportion of individuals in each age class at the outset of simulations) | 0–1: 56.5%; 1–2: 16.2%; 2–3: 11.1%; 3–4: 7.5%; 4–5: 4.3%; 5–6: 2.4%; >6: 1.9% | 17 (Table 3, pg 168) |
| Disease | ||
| Incubation period (FMDV-like) | ~POI(λ); λ = 2 days | 22 |
| Infectious period (FMDV-like) | ~POI(λ); λ = 8 days | 22 |
| Disease-induced mortality (DIM) (FMDV-like) | 0 | 22 |
| Incubation period (CSFV-like) | ~POI(λ); λ = 8 days | 34,38 |
| Infectious period (CSFV-like) | ~POI(λ); λ = 42 days | 34,38 |
| Disease-induced mortality (DIM) (CSFV-like) | 0–100% | 34,38 |
| Within-group transmission probability (πw) | 0.0003–0.99/infected feral swine/day | NA |
| Between-group transmission probability (πb) | 0.0003–0.99/infected feral swine/day | NA |
| Spatial cutoff (limiter for contact in spatial models) | 2 km | 13 |
*Underlined parameters are those that were varied using a Latin-hypercube design (ranges of values are indicated). These were fixed among individuals within a simulation. *Parameters with distributions were random variables chosen from their specified distribution. These were variable among individuals within a simulation. *Other parameters were fixed among individuals within the same simulation and across all simulations.