FIGURE 1 in Reproductive and defensive calls of Hydrolaetare schmidti (Anura: Leptodactylidae) from the Amazonian savanna of Amapá in northern Brazil

FIGURE 1. Spectrogram and oscillogram of (A–B) distress calls and (C) advertisement call of Hydrolaetare schmidti from the Amazonian savanna of Amapá in northern Brazil. (A) Typical distress call with clear harmonic structure and (B) distress call with pulsatile structure and without clear harmonic intervals. Male vouchers: CECC 3421 (A and C) and CECC 3422 (B). Calls were produced on different time and frequency scales, because of their distinct temporal and spectral characteristics.