Integrative revision of species limits in the genus Schiffornis (Aves: Tityridae) reveals cryptic diversity in the Neotropics

Autor(es)

Lima, Rafael Dantas ; Bocalini, Fernanda ; Silveira, Luis Fabio

• Tipo de documento: Artigo Científico
• Fonte: ZOOLOGICAL JOURNAL OF THE LINNEAN SOCIETY; v. 200, n. 4, p. 32-pg., 2023-09-28.

Resumo

Accurate species delimitation is essential for many biological subdisciplines. Nonetheless, current species diversity remains incompletely documented even in well-studied groups such as birds. Here, we take an integrative approach to examine species limits in the genus Schiffornis, a widespread group of dull-plumaged, whistle-voiced suboscine passerines of Neotropical humid-forest understory, currently considered to comprise seven species. We measured geographic variation in song, morphology, and mitochondrial and genome-wide nuclear markers to resolve the taxonomy of the genus. We show that Schiffornis comprises 13 separately evolving population lineages, of which most qualify as species taxa under all species definitions. These include a cryptic new species, several species splits, and the resurrection of a morphologically undifferentiated, but vocally and genetically distinct, taxon that was synonymized nearly a century ago in the Schiffornis turdina complex. We also found several hitherto unnoticed contact zones between diverging lineages and a leapfrog pattern of geographic song variation in the S. turdina complex, and we highlight potential avenues of further research of this genus. (AU)

• Processo FAPESP: 20/16065-8 - Aprendendo com o passado para prever o futuro: inferindo respostas da avifauna do Centro de Endemismo Pernambuco (CEP) às mudanças climáticas com filogeografia comparada e modelos de distribuição de espécies
• Beneficiário: Fernanda Bocalini
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 21/10339-1 - Taxonomia integrativa de dois tamnofilídeos altamente politípicos (Aves: Thamnophilidae)
• Beneficiário: Rafael Dantas Lima
• Modalidade de apoio: Bolsas no Brasil - Mestrado
• Processo FAPESP: 17/23548-2 - Avaliação, recuperação e conservação da fauna ameaçada de extinção do Centro de Endemismo Pernambuco (CEP)
• Beneficiário: Luís Fábio Silveira
• Modalidade de apoio: Auxílio à Pesquisa - Programa BIOTA - Temático