"First, his team demonstrated that hydrogen peroxide is usually harmful for #ants
of the Formica fusca
species. They fed them one of two diets – either a simple honey-based solution, or this same solution spiked with hydrogen peroxide. They showed that healthy ants given the spiked diet had a mortality rate of around 20 per cent, compared with around 5 per cent for those who got the harmless solution. But when they tried the same thing using ants infected with the #fungus Beauveria bassiana
, the opposite happened. The death rate of these ants fell from around 60 per cent for those on the ordinary diet to 45 per cent in those given food laced with hydrogen peroxide.