Fig. 2 in Ranavirus and helminth parasite co-infection in invasive American bullfrogs in the Atlantic forest, Brazil

Fig. 2. (a) Observed occurrence matrix of presence (red cells) and absence (white cells) of Ranavirus and helminth taxa (6 rows) infection in individual bullfrogs (Aquarana catesbeiana; 65 columns). (b) Simulated occurrence matrix (65 columns, one null matrix out of 1000 simulations). (c) Distribution of simulated cooccurrence metric (blue histogram bars; 1000 null matrices). Vertical red line = observed co-occurrence metric. Dashed vertical lines = 95% and 99% confidence intervals. (For interpretation of the references to colour in this figure legend, the reader is referred to the Web version of this article.)