Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2016-03-10T00:17:25Z No. of bitstreams: 1 TonnyMarquesDeOliveiraJunior_DISSERT.pdf: 2418125 bytes, checksum: 7634f34f0311d1ea88345391ea4082e9 (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2016-03-16T22:28:26Z (GMT) No. of bitstreams: 1 TonnyMarquesDeOliveiraJunior_DISSERT.pdf: 2418125 bytes, checksum: 7634f34f0311d1ea88345391ea4082e9 (MD5) / Made available in DSpace on 2016-03-16T22:28:26Z (GMT). No. of bitstreams: 1 TonnyMarquesDeOliveiraJunior_DISSERT.pdf: 2418125 bytes, checksum: 7634f34f0311d1ea88345391ea4082e9 (MD5) Previous issue date: 2013-05-24 / O estudo das aves configura uma importante ferramenta para o conhecimento dos processos envolvidos de padr?es comportamentais e morfol?gicos. A esp?cie aqui estudada pertence ? fam?lia Thamnophilidae, a terceira maior fam?lia restrita a regi?o Neotropical. S?o conhecidos popularmente como papa-formigas e compreendem 209 esp?cies. Grande parcela das esp?cies apresenta comportamento cr?ptico, tornando a comunica??o ac?stica importante ferramenta para manuten??o de contato das aves. Herpsilochmus pectoralis Sclater 1857, possui dimorfismo sexual evidente, mede entre 10 e 12 cm, ? encontrada em fragmentos florestais do Nordeste e ? categorizada como vulner?vel a processo de extin??o. Este estudo foi realizado em tr?s fragmentos de restinga no litoral leste do estado do Rio Grande do Norte. Atrav?s de grava??es entre 2006 e 2012 foi poss?vel descrever e caracterizar o canto de H. pectoralis. O canto do macho tem mais notas e maior dura??o do que o da f?mea (16% de dimorfismo). N?o encontramos diferen?a na frequ?ncia dominante entre os sexos. Descrevemos quatro tipos de chamadas para o repert?rio da esp?cie. Por meio de capturas com redes ornitol?gicas entre 2009 e 2012 foi poss?vel descrever e comparar a morfologia de H. pectoralis. A esp?cie apresentou menores valores de massa no per?odo de seca. Os jovens apresentaram similaridades morfom?tricas com rela??o aos adultos. A esp?cie n?o possui dimorfismo acentuado em suas caracter?sticas morfom?tricas. Os jovens que voam possuem caracter?sticas morfom?tricas de adultos mesmo n?o apresentando plumagem caracter?stica de adulto. O padr?o de muda na esp?cie ? caracter?stico de aves tropicais, mas possui per?odo reprodutivo curto, caracter?stico de esp?cies temperadas. A esp?cie mesmo estando em regi?o tropical sofre com o regime sazonal de chuvas, que influencia em sua fenologia reprodutiva e no ciclo de muda (r?mige e retriz). Dessa forma, a presente disserta??o traz informa??es sobre a biologia de H. pectoralis para subsidiar o entendimento da rela??o dessa esp?cie com o ambiente e conhecer as varia??es de aspectos morfol?gicos e vocais, visando entender padr?es e caracter?sticas gerais dos Thamnophilidae. / The study of birds represents an important tool for the understanding of the processes involved in behavioral and morphological patterns. The species we have studied belongs to Thamnophilidae family, the third largest family restricted to the Neotropic ecozone. They are popularly known as antbirds and comprise 209 species. A large portion of the species has cryptic behavior, making the acoustic communication an important tool for maintaining contact among birds. Herpsilochmus pectoralis Sclater 1857 has evident sexual dimorphism, measured between 10 and 12 cm height and it is found in forest fragments in the Northeast and it is also categorized as vulnerable to extinction process. This study was conducted in three sandbank fragments on the east coast of the state of Rio Grande do Norte, Brazil. With the help of tape recordings between 2006 and 2012 it was possible to describe and characterize the sing of H. pectoralis. The sing from male birds has more and longer length than the female sing (16% of dimorphism). No differences were found in the dominant frequency between the sexes. We describe four types of calls from this species repertoire. Through capturing with ornithological nets between 2009 and 2012 it was possible to describe and compare the morphology of H. pectoralis. The species have shown lower corporal mass in the dry season. The young birds showed morphometric similarities in comparison to adults. The species has no accentuated dimorphism in their morphometric characteristics. The young ones with flying capabilities have morphometric characteristics of adults, even though they do not show a characteristic adult plumage. The moult pattern in the species is a characteristic of tropical birds, but it shows short reproductive period, typical of temperate species. Even being in the tropical region, the species suffers with seasonal rainfall, which influences their reproductive phenology and moult (remex and rectrix) cycle. Thus, this dissertation provides information on the biology of H. pectoralis to support the understanding of the relationship of this species to the environment and also to know the variations of morphology and vocal aspects, in order to understand patterns and general characteristics of Thamnophilidae.