Vocal Ontogeny in Neotropical Singing Mice (Scotinomys)
Figure 3
Change in the proportional abundances of common notes types during vocal development in singing mice.
Representative examples of notes A–E (dominant frequency only; see Fig. 2 for harmonics) are shown on the X-axis. Black (S. teguina) and white (S. xerampelinus) bars are species means for notes in each age class. Error bars are +1 SE. Sample sizes by age class are 20 (1–3 and 30+ days), 19 (4–6 and 7–9 days) and 13 (10–12 days) for S. teguina, and 9 (1–3 days), 11 (4–6 days), 7 (7–9 days), 4 (10–12 days) and 8 (30+ days) for S. xerampelinus. Species differences in the proportional abundances of note types within age class were tested with one-way ANOVA, * P<0.05, **P<0.01.