Fig. 2. Correlation between ethanol and acetic acid tolerances across species of Drosophila and populations of D. melanogaster. Points represent the lethal dose of toxin causing a 50% male mortality (LD₅₀) in each genetic line. Error bars represent 95% confidence intervals for LD₅₀ values. Australian population data are from flies acclimated to and tested at 15°C. All others are from a survey of tolerances in flies reared and assayed at 24°C.