Fig 1.
Probability of survival for snails in treatment groups of 0.38 ppt, 1.9 ppt, 3.8 ppt, 5.7 ppt salinity treatments.
Snail survival in 0.38 ppt is significantly higher than 1.9 ppt (p < 0.05), 3.8 ppt (p < 0.0001), and 5.7 ppt (p < 0.0001). The survival probability of 1.9 ppt is significantly higher than 3.8 ppt and 5.7 ppt salinity treatments (p < 0.05). For coefficients and pairwise comparisons see supplement Table B in S1 Text.
Fig 2.
Egg mass output for uninfected snails in treatment groups 0.38 ppt, 1.9 ppt, 3.8 ppt, and 5.7 ppt.
The sample size for uninfected snails are 18 snails in 0.38 ppt with 144 total observations, 47 snails in 1.9 ppt with 376 total observations, 33 snails in 3.8 ppt with 264 total observations, and 39 snails in 5.7 ppt with 312 total observations. Snails in the 0.38 ppt salinity treatment had significantly higher egg mass output than 3.8 ppt (p < 0.05) or 5.7 ppt (p < 0.0001). Snails in the 1.9 ppt and 3.8 ppt treatments also had a higher output compared to the 5.7 ppt treatment (p < 0.0001 and p < 0.05, respectively). The horizontal lines on the violin plot represent data quantiles of 25%, 50%, and 75%. Letters above bars indicate significant differences in egg mass production, with different letters representing significant differences. For pairwise comparisons see supplement Table C in S1 Text.
Fig 3.
Snail infection prevalence in 0.38 ppt, 1.9 ppt, 3.8 ppt, and 5.7 ppt salinity treatments after exposure to Schistosoma mansoni miracidia.
Different letters above bars indicate significant differences in infection prevalence among the treatments. For pairwise comparisons see supplement Table E in S1 Text.
Fig 4.
Survival probability of cercariae in 0.38 ppt, 1.9 ppt, 3.8 ppt, and 5.7 ppt salinity treatments over a 24-hour period.
All four treatment groups are significantly different from one another except for 1.9 ppt and 5.7 ppt (p > 0.05) For pairwise comparisons see supplement Table G in S1 Text.