nearing significanceP <0.0001
The model snakes mimicking the snakes found on limestone had significantly greater achromatic and chromatic contrasts on volcanic rocks (achromatic: F 1,15 = 80.13, P <0.0001; chromatic: F 1,15 = 6.930, P = 0.019), while model snakes representing the snakes found on volcanic rock only had significantly greater achromatic contrasts on limestone, however chromatic contrasts was nearing significance (achromatic: F 1,15 = 38.33, P <0.0001; chromatic: F 1,15 = 5.669, P = 0.031).