Historical climate changes and hybridization shaped the evolution of Atlantic Forest spinetails (Aves: Furnariidae)

Author(s)

Batalha-Filho, Henrique ^[1] ; Maldonado-Coelho, Marcos ^[2] ; Miyaki, Cristina Yumi ^[3]

Affiliation

^[1] Univ Fed Bahia, Inst Biol, Salvador, BA - Brazil

^[2] Lund Univ, Dept Biol, SE-22362 Lund - Sweden

^[3] Univ Sao Paulo, Inst Biociencias, Dept Genet & Biol Evolut, Sao Paulo - Brazil

• Document type: Journal article
• Source: HEREDITY; v. 123, n. 5, p. 675-693, NOV 2019.
• Web of Science Citations: 0

Abstract

Combining phylogeographic approaches and hybrid zone inference in a single framework is a robust way to depict respectively the biogeographic history of lineages and the evolutionary processes responsible for speciation. Here, we studied the spatiotemporal patterns of diversification and characterize the hybrid zone between two Atlantic Forest spinetails (Synallaxis ruficapilla and Synallaxis cinerea) using mitochondrial DNA and nuclear (autosomal and Z-linked) genes. We consistently recovered divergence between and within the two species during the late Pliocene and Pleistocene using an isolation with migration model. Also, our results indicate distinct levels of introgression among lineages. Ecological niche models and demographic inferences, used to infer range distributions throughout the late Quaternary, were not consistent with the hypothesis of a large river as a primary barrier responsible for the divergence of the two species. Instead, a scenario of isolation and divergence followed by geographic expansion and admixture as a consequence of Quaternary climatic oscillations was supported. Paleomodels also were not consistent with the idea that the hybrid zone originated in primary differentiation and favor a secondary contact scenario. Model fitting indicated that clines of different loci spanning the hybrid zone are coincident and concordant. The narrow cline for one Z-linked locus could be indicative of some form of post-zygotic selection hindering genetic homogenization between the two species. (AU)

• FAPESP's process: 13/50297-0 - Dimensions US-BIOTA São Paulo: a multidisciplinary framework for biodiversity prediction in the Brazilian Atlantic forest hotspot
• Grantee: Cristina Yumi Miyaki
• Support Opportunities: BIOTA-FAPESP Program - Thematic Grants
• FAPESP's process: 08/05705-4 - Phylogeography of forest birds from the Atlantic Forest
• Grantee: Henrique Batalha Filho
• Support Opportunities: Scholarships in Brazil - Doctorate