Descrição do repertório acústico e estudo sobre a variação individual no canto de macho de uma população de Embernagra longicauda (Aves, Passeriformes)

• Ano de defesa: 2016
• Autor(a) principal: Pedro Henrique Vieira Braga Pereira da Silva
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Minas Gerais; UFMG
• Palavras-chave em Português: Ecologia; Conservação e Manejo da Vida Silvestre
• Link de acesso: http://hdl.handle.net/1843/BUBD-ADXF3V

Birds have the most diverse and studied vocalization, which is related to its high complexity, excepted the humans. The main functions of vocalization in birds are territory defense and sexual attraction. Most songbirds have a small or intermediate song repertory, which varies from 1 to 25 kinds of songs. The lack of bioacoustic studies on tropical areas, especially in Southern America, represent a demand of studies in this area. Characteristics that individualize the components of a population are essential for support and conservation of social interactions. Acoustic individual variation is a widely used factor that keeps the dynamics recognition of relatives, sexual partner and potential competitors. Embernagra longicauda is a songbird, territorialist and monogamic species of Thraupidae family, endemic ofmountain tops of eastern Brazil. The goals of this project were to describe the repertory of syllables and songs, to investigate the repertory similarity of syllables and songs between neighbors, and the acoustic variation between males of a population of Embernagra longicauda, in Serra do Cipó, Minas Gerais State. A total of nine individuals were marked, with six males and three females. The total focal recording sampling of was five hours and twenty-four minutes (5h 24m), with an average of fifty three minutes (53 m) per individual. The repertory of syllables and songs of E. longicauda is considered small or intermediate, due to the average of 18 syllables and 16 songs, per individual. Statistical analysis showed that there are significant differences between individuals, either for repertory composition of syllables, or for acoustic factors. This study can be used as basis for future research to investigate the dynamics between the components of a couple and the use of individual variation for individual recognition in the social dynamics of this species.