Acoustic parameters of the calls of the Dominant frequency, Pulse rate and Modulation depth series for three populations of Pleurodema thaul.

−2, −1, +1, +2 indicate standard deviations relative to standard calls for the dominant frequency and pulse rate series.For the modulation depth series values of 0, 50, 75 and 100% were used because the standard calls of Totoral and Los Maitenes had modulation depth values that did not allow the +1 and +2 variants.