Female association times with the color-manipulated males. Mean ± s.e. association time of females with stimulus males of varying color. For presentation the males are grouped into four color categories, with the mean θ value of each category presented on the x-axis. Lower θ values indicate redder males.
Toomey and McGraw BMC Evolutionary Biology 2012 12:3 doi:10.1186/1471-2148-12-3