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      Geographic variation in the acoustic signals of lesser treefrogs Dendropsophus minutus (Anura, Hylidae)

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          Abstract

          Abstract Biological sound archives are a major source to investigate geographic variation in animal acoustic signals and their evolutionary drivers. The acoustic signals of anuran species with wide distribution ranges often vary geographically as a result of isolation by distance and climate amongst other factors. We examined whether the acoustic structure of call notes would vary geographically in lesser treefrogs Dendropsophus minutus using recordings from bioacoustics repositories. We also tested whether climate (mean annual temperature and annual precipitation) drive geographic variation in those signals. The acoustic distance was unrelated to geographic distance, suggesting that isolation by distance solely cannot explain geographic variation in call structure. Overall, lesser treefrogs uttered call notes with lower frequencies and bandwidths in the west of their range. In addition, frogs produced shorter call notes in hotter, wetter sites and narrow-bandwidth notes in hotter environments. We suggest that frogs produce more calls (not measured here) of shorter durations to maximize transmission and minimize the metabolic costs of calling at high air temperatures. We also suggest that hotter environments favor the propagation of lower-bandwidth calls. This study reinforces the feasibility and power of citizen science and acoustic data repositories for understanding the evolution of anuran acoustic signals.

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          Most cited references67

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          Controlling the False Discovery Rate: A Practical and Powerful Approach to Multiple Testing

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                Author and article information

                Journal
                paz
                Papéis Avulsos de Zoologia
                Pap. Avulsos Zool.
                Museu de Zoologia da Universidade de São Paulo (São Paulo, SP, Brazil )
                0031-1049
                1807-0205
                2024
                : 64
                : e202464017
                Affiliations
                [1] Brasília Distrito Federal orgnameUniversidade de Brasília orgdiv1Instituto de Ciências Biológicas orgdiv2Departamento de Ecologia Brazil mayconveigaunb@ 123456gmail.com
                [2] Brasília Distrito Federal orgnameUniversidade de Brasília orgdiv1Instituto de Ciências Biológicas orgdiv2Departamento de Zoologia Brazil
                Author information
                https://orcid.org/0000-0002-4090-0455
                https://orcid.org/0000-0002-5478-8193
                https://orcid.org/0000-0002-3193-6376
                Article
                S0031-10492024000100216 S0031-1049(24)06400000216
                10.11606/1807-0205/2024.64.017
                b25a1cb1-fed2-4e2d-8414-c1d94618a9e5

                This work is licensed under a Creative Commons Attribution 4.0 International License.

                History
                : 08 September 2023
                : 15 April 2024
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 67, Pages: 0
                Product

                SciELO Brazil


                Amphibians,Anurans,Bioacoustics,Vocal behavior,Vocal repertoire

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