Publicação: Longevity Records and Signs of Aging in Marsh Antwren Formicivora acutirostris (Thamnophilidae)
Carregando...
Data
Orientador
Coorientador
Pós-graduação
Curso de graduação
Título da Revista
ISSN da Revista
Título de Volume
Editor
Wilson Ornithological Soc
Tipo
Artigo
Direito de acesso
Acesso restrito
Resumo
Longevity records inform demographic studies and our understanding of avian senescence evolution, yet studies on free-ranging species are rare, especially in the tropics. Here we provide minimum longevity records for the Marsh Antwren Formicivora acutirostris (Thamnophilidae), a small (9.8 g) territorial bird inhabiting tidal marshes in southern Brazil. We recorded a 16.2-year-old male and a 14.2-year-old female, both breeding before they were last seen, as well as 31 individuals between 6-10.2 years of age. There was no difference in the sex-ratio between these individuals. The oldest male was nearly 2 years older than the oldest thamnophilid recorded to date, and twice as old as the oldest recorded breeding individual. We also observed behaviors which we interpret as signs of aging, such as the isolation of the old female and her apparent indifference to her mate, and frequent territory disputes involving the old male and floater males.
Descrição
Palavras-chave
Atlantic Forest, Brazil, longevity, maximum breeding age, senescence
Idioma
Inglês
Como citar
Wilson Journal Of Ornithology. Waco: Wilson Ornithological Soc, v. 127, n. 1, p. 98-U180, 2015.
