Presentation Details
| Signals across media:agonistic responses to calls and substrate-borne vibrations in a Neotropical frog Luisa F.Arcila-Pérez1, Luis Alberto Rueda-Solano2, Reginald B Cocroft3, Jorge Molina4. 1Departamento de Ciencias Biológicas, Universidad de los Andes, Bogotá, Bogotá D.C, Colombia.2Grupo de Investigación en Biodiversidad y Ecología Aplicada (GIBEA), Facultad de Ciencias Básicas, Universidad del Magdalena, Santa Marta, Magdalena, Colombia.3Division of Biological Sciences, University of Missouri, Columbia, Missouri, USA.4Departamento de Ciencias Biológicas, Universidad de los Andes, Bogotá, Bogotá D.C, Colombia |
Abstract
Acoustic signal production in anurans generates vibrations that propagate through both air and substrate. However, substrate-borne communication (biotremology) remains poorly studied, particularly in agonistic contexts and under natural conditions. We investigated whether male Tachiramantis tayrona exhibit differential agonistic responses to airborne and substrate-borne signals in the Sierra Nevada de Santa Marta, Colombia. We characterized temporal and spectral properties of both components and conducted unimodal playback experiments. Preliminary data include nine individuals and 34 paired acoustic and vibrational signals. Acoustic stimuli elicited primarily vocal responses with limited locomotor activity, whereas vibrational stimuli induced low locomotor activity and no clear vocal responses. This suggests that substrate-borne vibrations alone may be insufficient to elicit strong agonistic responses. Our results highlight the importance of incorporating substrate-borne vibrations into studies of anuran communication and emphasize the need for integrative approaches to better understand the evolution and functional role of multimodal signaling.
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