Table 4.
Descriptive statistics for call parameters of Osteocephalus buckleyi and Osteocephalus cannatellai sp. n. Mean ± SD is given with range below. The calls ofboth species have an obligatory first component consistent of a rattle-like note. Osteocephalus cannatellai has a facultative second component consistent of one to three quack notes. Sample sizes are number of males. Temporal characters are shown in seconds; spectral characters in Hertz.
| Osteocephalus cannatellai | Osteocephalus buckleyi | |||
|---|---|---|---|---|
| Combined(n = 5) | Río Piraña(n = 1) | Río Pucayacu(n = 4) | Jatun Sacha(n = 2) | |
| Duration of first component note | 0.425 ± 0.053(0.356–0.489) | 0.356 | 0.442 ± 0.042(0.389–0.489) | 0.059 ± 0.004(0.056–0.063) |
| Call Rate | 0.3066 ± 0.113(0.208–0.454) | 0.454 | 0.269 ± 0.090(0.208–0.402) | 1.524 ± 0.151(1.417–1.631) |
| First component interval | 4.114 ± 1.722(2.142–6.004) | 2.142 | 4.607 ± 1.528(2.568–6.004) | 0.725 ± 0.140(0.625–0.824) |
| Dominant Frequency | 1049.54 ± 247.18(771.6–1412.6) | 771.616 | 1119.02 ± 221.99(765.68–1472.26) | 745.66 ± 0.87(745.04–746.28) |
| Number of pulses | 12.213 ± 1.585(9.8–14.2) | 12 | 12.266 ± 1.825(9.8–14.2) | 3.328 ± 0.181(3.2–3.457) |
| Pulse rate | 28.932 ± 4.095(23.847–34.016) | 33.661 | 27.749 ± 3.610(22.004–33.495) | 55.833 ± 1.565(41.772–69.893) |
| Duration of second component | 0.307 ± 0.106(0.216–0.488) | 0.216 | 0.329 ± 0.108(0.25–0.488) | NA |
| Duration of second component note | 0.032 ± 0.004(0.027–0.037) | 0.027 | 0.033 ± 0.004(0.027–0.037) | NA |
| Number of second component notes | 0.866 ± 0.339(0.445–1.287) | 1 | 0.832 ± 0.381(0.225–1.439) | NA |
| Quack rate | 0.140 ± 0.026(0.108–0.177) | 0.108 | 0.148 ± 0.022(0.125–0.177) | NA |