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      Similaridad de 11 especies pertenecientes a las familias Falconidae y Strigidae a partir de sus vocalizaciones Translated title: Similarity of 11 species belonging to the families Falconidae and Strigidae from their vocalization

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          Abstract

          RESUMEN: Conocer aspectos biológicos de las familias Falconidae y Strigidae como la vocalización es relevante, ya que podríamos utilizar este aspecto como base para agrupar especies y evaluar su similaridad. En ese sentido se caracterizaron las vocalizaciones de 11 especies pertenecientes a las familias Falconidae y Strigidae, a través de la descarga de 53 audios por especie de la base de datos de acceso público Xeno Canto. Las variables consideradas en este estudio fueron: frecuencia, amplitud, duración, números de picos de frecuencia, factor cresta, mediana de envolvente de amplitud e índice de complejidad acústica. Una vez caracterizadas las vocalizaciones se procedió a evaluar la similaridad de especies, utilizando para ello el agrupamiento jerárquico (índice de Conectividad = 9,415, índice de Dunn = 0,819,). Guardando similaridad a partir de las características de sus vocalizaciones Falco peregrinus y F. columbarius, F. rufigularis y F. femoralis; mientras que F. sparverius tuvo más similaridad con las 2 primeras especies. Todas estas especies se diferencian de las especies de la familia Strigidae teniendo aquí Glaucidium brasilianum, G. jardini y G. peruanum más similaridad; asimismo Glaucidium hardyi y Aegolius harrisii guardan más concordancia entre ellos y finalmente Megascops roboratus presenta similaridad con todas las especies del género Glaucidium (coeficiente de aglomeración = 0,67).

          Translated abstract

          ABSTRACT: Knowing biological aspects of the families Falconidae and Strigidae as vocalization is relevant, since we could use this aspect as a basis to group species and evaluate their similarity. In this sense, the vocalizations of 11 species belonging to the Falconidae and Strigidae families were characterized, through the download of 53 audios per species from the Xeno Canto public access database. The variables considered in this study were: frequency, amplitude, duration, number of frequency peaks, crest factor, mean amplitude envelope and index of acoustic complexity. Once the vocalizations were characterized, the species similarity was evaluated, using hierarchical grouping (connectivity index = 9.415, Dunn index = 0.819). Keeping similarity from the characteristics of their vocalizations Falco peregrinus and F. columbarius, F. rufigularis and F. femoralis; while F. sparverius had more similarity with the first 2 species. All these species differ from the species of the family Strigidae having here Glaucidium brasilianum, G. jardini and G. peruanum more similarity; Likewise, Glaucidium hardyi and Aegolius harrisii have more concordance between them and finally Megascops roboratus presents similarity with all species of the genus Glaucidium (agglomeration coefficient = 0.67).

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          A new methodology to infer the singing activity of an avian community: The Acoustic Complexity Index (ACI)

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            Factoextra: Extract and visualize the results of multivariate data analyses.

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              A global analysis of song frequency in passerines provides no support for the acoustic adaptation hypothesis but suggests a role for sexual selection

              Animals use acoustic signals for communication, implying that the properties of these signals can be under strong selection. The acoustic adaptation hypothesis predicts that species in dense habitats emit lower-frequency sounds than those in open areas because low-frequency sounds propagate further in dense vegetation than high-frequency sounds. Signal frequency may also be under sexual selection because it correlates with body size and lower-frequency sounds are perceived as more intimidating. Here, we evaluate these hypotheses by analysing variation in peak song frequency across 5,085 passerine species (Passeriformes). A phylogenetically informed analysis revealed that song frequency decreases with increasing body mass and with male-biased sexual size dimorphism. However, we found no support for the predicted relationship between frequency and habitat. Our results suggest that the global variation in passerine song frequency is mostly driven by natural and sexual selection causing evolutionary shifts in body size rather than by habitat-related selection on sound propagation.
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                Author and article information

                Journal
                mang
                Manglar
                Manglar
                Universidad Nacional de Tumbes (Tumbes, , Peru )
                1816-7667
                2414-1046
                October 2023
                : 20
                : 4
                : 405-410
                Affiliations
                [1] Lima Lima orgnameUniversidad Ricardo Palma Peru
                Article
                S2414-10462023000400405 S2414-1046(23)02000400405
                10.57188/manglar.2023.047
                668161f0-b6a0-4f6d-91f2-befe8111c6ba

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

                History
                : 31 August 2023
                : 11 December 2023
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 30, Pages: 6
                Product

                SciELO Peru

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                Artículos originales

                vocalización animal,Cluster analysis,birds.,animal vocalization,aves,Análisis por conglomerados

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