Connecting Amazonian, Cerrado, and Atlantic forest histories: Paraphyly, old divergences, and modern population dynamics in tyrant-manakins (Neopelma/Tyranneutes, Ayes: Pipridae)

Autor(es)

Capurucho, Joao ^{[1, 2]} ; Ashley, V, Mary ; Ribas, Camila ^[3] ; Bates, John ^[2]

Afiliação do(s) autor(es)

^[1] V, Univ Illinois, Dept Biol Sci, 845 W Taylor St, Chicago, IL 60607 - USA

^[2] Field Museum Nat Hist, Integrat Res Ctr, Life Sci Sect, 1400 S Lake Shore Dr, Chicago, IL 60605 - USA

^[3] Inst Nacl de Pesquisas da Amazonia, Coordenacao Biodiversidade, Av Andre Araujo 2936, Manaus, Amazonas - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Molecular Phylogenetics and Evolution; v. 127, p. 696-705, OCT 2018.
• Citações Web of Science: 2

Resumo

Several biogeographic hypotheses have been proposed to explain connections between Amazonian and Atlantic forest biotas. These hypotheses are related to the timing of the connections and their geographic patterns. We performed a phylogeographic investigation of Tyrant-manakins (Ayes: Pipridae, Neopelma/Tyranneutes) which include species inhabiting the Amazon and Atlantic forests, as well as gallery forests of the Cerrado. Using DNA sequence data, we determined phylogenetic relationships, temporal and geographic patterns of diversification, and recent intraspecific population genetic patterns, relative to the history of these biomes. We found Neopelma to be a paraphyletic genus, as N. chrysolophum is sister to Neopelma + Tyranneutes, with an estimated divergence of approximately 18 Myrs BP, within the oldest estimated divergence times of other Amazonian and Atlantic forest avian taxa. Subsequent divergences in the group occurred from Mid Miocene to Early Pliocene and involved mainly the Amazonian species, with an expansion into and subsequent speciation in the Cerrado gallery forests by N. pallescens. We found additional structure within N. chtysocephalum and N. sulphureiventer. Analysis of recent population dynamics in N. chrysocephalum, N. sulphureiventer, and N. pallescens revealed recent demographic fluctuations and restrictions to gene flow related to environmental changes since the last glacial cycle. No genetic structure was detected across the Amazon River in N. pallescens. The tyrant-manakins represent an old historical connection between the Amazon and Atlantic Forest. (AU)

• Processo FAPESP: 12/50260-6 - Estruturação e evolução da biota amazônica e seu ambiente: uma abordagem integrativa
• Beneficiário: Lúcia Garcez Lohmann
• Modalidade de apoio: Auxílio à Pesquisa - Programa BIOTA - Temático