Figure 1. Nest choice assays.
In each assay, colonies of Monomorium pharaonis were provided with the choice between two experimental nest types: infected vs uninfected nests (experiment A); infected vs empty (experiment B) and uninfected vs empty (experiment C). The position of the experimental nest types was swapped between trials to avoid position biases in the choice. The position of the water tube (W) and food (F) is also showed.