Bats dynamically change echolocation parameters in response to acoustic playback

  • Animals extract behaviorally relevant signals from “noisy” environments. To investigate signal extraction, echolocating provides a rich system testbed. For orientation, bats broadcast calls and assign each echo to the corresponding call. When orienting in acoustically enriched environments or when approaching targets, bats change their spectro-temporal call design. Thus, to assess call adjustments that are exclusively meant to facilitate signal extraction in “noisy” environments, it is necessary to control for distance-dependent call changes. By swinging bats in a pendulum, we tested the influence of acoustic playback on the echolocation behavior of Carollia perspicillata. This paradigm evokes reproducible orientation behavior and allows a precise definition of the influence of the acoustic context. Our results show that bats dynamically switch between different adaptations to cope with sound-based navigation in acoustically contaminated environments. These dynamics of echolocation behavior may explain the large variety of adaptations that have been reported in the bat literature.

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Author:Marcel Jerome BeetzORCiDGND, Manfred KösslORCiD, Julio C. Hechavarria-CueriaORCiDGND
Parent Title (English):bioRxiv
Document Type:Preprint
Date of Publication (online):2020/07/30
Date of first Publication:2020/07/30
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2023/06/13
Page Number:32
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 59 Tiere (Zoologie) / 590 Tiere (Zoologie)
Licence (German):License LogoCreative Commons - CC BY-NC - Namensnennung - Nicht kommerziell 4.0 International