Figure legends
Figure 1. Simulation model outputs with discrete host mortality(Eq. 1) showing failure and success of varying predator density (N
m–2) for projected snail host density (N
L–1, purple solid line), human-infectious cercariae
density (N 0.1 L–1, red line), resource density (mg C
L–1, green line), and infected snail host density (N
L–1, purple dashed line) for periphyton algae
(r = 0.25 d–1) over the 150-day transmission
season: A) no predators (0 N m–2), B) intermediate
predator stocking density (10 N m–2), and C) high
predator stocking density (15 N m–2). D) Mean (±SE)
cumulative human-infectious cercariae density (N L) for predator
stocking densities of 0–15 and 20 N m–2. Letters
represent cumulative cercariae density for top panel figures. Baseline
host mortality rate hb = 0.001
d–1.
Figure 2. Simulation model outputs with discrete host mortality(Eq. 1) showing failure and success of varying predator density (N
m–2) for projected snail host density (N
L–1, purple solid line), human-infectious cercariae
density (N 0.1 L–1, red line), resource density (mg C
L–1, green line), and infected snail host density (N
L–1, purple dashed line) for a detritus resource
subsidy (det = 0.25 mg C L–1d–1) over the 150-day transmission season: A) no
predators (0 N m–2), B) intermediate predator
stocking density (7 N m–2), and C) high predator
stocking density (15 N m–2). D) Mean (±SE) cumulative
human-infectious cercariae density (N L) for predator stocking densities
of 0–15 and 20 N m–2. Letters represent cumulative
cercariae density for top panel figures. Baseline host mortality ratehb = 0.001 d–1.
Figure 3. Mean (±SE) cumulative cercariae density (N L) withdiscrete host mortality (Eq. 1) under increasing predator
stocking densities (0–15, 20, 25, and 30 N m–2)
targeting infected host size cohorts of 0–5, 0–10, 0–15, 0–25, and
0–50 mm for A) algae (0.25 d–1) and B) detritus
(0.25 mg C L–1 d–1). The 0–50 mm
host size cohort represents non-discriminate host mortality (all
possible host sizes) and is the same output in Fig. 1D and Fig. 2D for
algae and detritus, respectively. Size cohorts capture the entire size
distribution of the host lifecycle.
Figure 4. Mean (±SE) cumulative cercariae density (N L) withcontinuous host mortality (Eq. 2) under increasing log + 1
predator stocking densities (N m–2) for
non-discriminate host predation (0–50 mm hosts) for varying resource
productivity levels of 0, 0.01, 0.05, 0.1, 0.2, and 0.25 for A) algae
(d–1) and B) detritus (mg C L–1d–1). Dotted line represents the current recommended
predator density from (Sokolow, Lafferty, and Kuris 2014). Dashed line
represents current maximum stocking densities of aquaculture river
prawns Macrobrachium rosenbergii from
http://www.aquacultureoftexas.com/tanks.htm.