Fig. 4From: Longitudinal survey on the distribution of Biomphalaria sudanica and B. choanomophala in Mwanza region, on the shores of Lake Victoria, Tanzania: implications for schistosomiasis transmission and controlViolin plots including mean and standard error of mean of Biomphalaria snails (all), B. sudanica and B. choanomphala collected by month (aggregated across years)Back to article page