Fig. 2.

Mate choice results for labeling components of study. The whine (call value 00) is the túngara frog call. PC calls vary in the percentage (e.g., 6%, 12%, 18%) in which they differ from the conspecific call relative to the call of P. coloradorum. The proportion of females (n = 20 for each experiment) that prefer the conspecific call to each call variant shows that females label the calls PC-6 through PC6 as conspecific (they do not prefer the conspecific call to these variants) and label calls PC12 through PC50 as not conspecific (they prefer the conspecific call to each of these variants). The dashed lines indicate the null expectation (bottom line) and the critical value for a significant preference (top line).