Distress calls of Leptodactylus macrosternum Miranda-Ribeiro, 1926 (Anura: Leptodactylidae) during a cannibal attack

Lucas Rodriguez Forti


Distress calls emitted by preys should reduce the success of predators during the agonistic interaction. Many species of anurans are capable to display distress calls as a defensive behavior. However, formal bioacoustics analysis of such signals are still incipient. We describe for the first time the distress call of a juvenile of Leptodactylus macrosternum, which was emitted during a cannibal attack by an adult. We analyzed 12 distress calls, which were composed by a harmonic structure with multiple pulses and large range frequency. Other leptodactylids have very similar distress calls; however, high variation on some call properties, as call duration, should be a common feature of distress calls in this genus. Our work contributes with novel bioacoustics information for Neotropical anurans.

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