Ronaldo Mota Conceição dos Santos

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Projetos de pesquisa

• 2020 - 2020

  Redescription and variation in the vocalization of Boana faber (Wied-Neuwied, 1821) (Anura: Hylidae) along its distribution, Descrição: Trabalho de Conclusão de Curso (Graduação em Ciências Biológicas) - UDF Centro Universitário. ABSTRACT The vocalization of anurans contain essential information on specific recognition, sexual attraction and social organization. The geographic distance between populations can result in variations in vocalization, that can make it difficult to recognize individuals from different areas. The aim of this study was to identify geographical variations in the vocalization of a species of anuran that has a wide distribution throughout the Atlantic Forest, Boana faber. The hypothesis of the work is that B. faber presents significant vocal variation depending on the location of its populations, where populations closer geographically present similar vocalization, but differ as they move away. Were identified eight vocal parameters (e.g. singing duration, average entropy, low frequency, high frequency, frequency at 5%, frequency at 95%, dominant frequency and number of pulses) in 836 ad corners throughout their distribution through the program Raven Pro 1.6. In the R environment, the model selection approach was carried out to identify the acoustic parameters that change according to latitude, longitude and altitude. The results showed a clinal variation in the corner of the B. faber ad. The duration of the song was positively related to longitude. A negative relationship was observed between the average entropy and the altitude and latitude variables. Variables related to frequency showed no relationship with any of the geographical variables. The number of pulses showed a negative relationship with latitude... As described by MARTINS & HADDAD (1988), B. faber's song has a single note, but differs in the duration of the song, the genus Boana presents significant variation in vocal characteristics between species. In addition, the variations shown in the results confirm the research hypothesis.. , Situação: Concluído; Natureza: Pesquisa. , Alunos envolvidos: Graduação: (1) . , Integrantes: Ronaldo Mota Conceicao dos Santos - Integrante / Mariana de-Carvalho - Coordenador / Andressa de Mello Bezerra - Integrante.