Average infection loads on frogs exposed to hybrids and Bd-GPL were highly variable within treatments (hybrids: 7,356 g.e.; 8,679 g.e.; 248,663 g.e.; Bd-GPL: 9,893 g.e.; 49,316 g.e.; 141,879 g.e.; Fig. 3). This evidence concerns the gene IL31RA and infection.