Isolation by environment and recurrent gene flow shaped the evolutionary history of a continentally distributed Neotropical treefrog

Autor(es)

Camurugi, Felipe ^{[1, 2]} ; Gehara, Marcelo ^[3] ; Fonseca, Emanuel M. ^{[4, 5]} ; Zamudio, Kelly R. ^[6] ; Haddad, Celio F. B. ^{[7, 8]} ; Colli, Guarino R. ^[9] ; Thome, Maria Tereza C. ^{[7, 8]} ; Prado, Cynthia P. A. ^[10] ; Napoli, Marcelo F. ^[11] ; Garda, Adrian A. ^[1]

Afiliação do(s) autor(es):Mostrar menos -

^[1] Univ Fed Rio Grande do Norte, Dept Bot & Zool, Natal, RN - Brazil

^[2] Univ Fed Paraiba, Programa Posgrad Ciencias Biol, Joao Pessoa, Paraiba - Brazil

^[3] Rutgers Univ Newark, Dept Earth & Environm Sci, Newark, NJ - USA

^[4] Ohio State Univ, Dept Evolut Ecol & Organismal Biol, Columbus, OH 43210 - USA

^[5] Ohio State Univ, Museum Biol Divers, Columbus, OH 43210 - USA

^[6] Cornell Univ, Dept Ecol & Evolutionary Biol, Ithaca, NY - USA

^[7] Univ Estadual Paulista UNESP, Inst Biociencias, Dept Biodiversidade, Rio Claro, SP - Brazil

^[8] Univ Estadual Paulista UNESP, Ctr Aquicultura, Rio Claro, SP - Brazil

^[9] Univ Brasilia, Dept Zool, Brasilia, DF - Brazil

^[10] Univ Estadual Paulista, Dept Morfol & Fisiol Anim, Jaboticabal, SP - Brazil

^[11] Univ Fed Bahia, Inst Biol, Museu Hist Nat, Museu Zool, Salvador, BA - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Journal of Biogeography; v. 48, n. 4 DEC 2020.
• Citações Web of Science: 1

Resumo

Aim Phylogeographic studies show how historical and current changes in landscapes shape the geographic distribution of genetic diversity in species of animals and plants. In particular, for the species of the Diagonal of Open Formations (DOF), the compartmentalization of the Central Brazilian Plateau (CBP) during the Tertiary and climatic oscillations during the Quaternary have often been invoked to explain the origin and current patterns of biodiversity. We investigated how landscape changes and climatic oscillations shaped the distribution and diversification history of a widespread South American treefrog. Location South American Diagonal of Open Formations (DOF) including Caatinga, Cerrado, and Chaco biomes. Taxon Treefrog Boana raniceps. Methods We used a multi-locus dataset from 288 individual frogs collected at 115 localities throughout most of the species' distribution. We used population assignment analysis, species distribution models, historical demography models, approximate Bayesian computation and landscape genetic analyses to test alternative hypotheses of diversification. Results We found two genetic lineages that diverged during the mid-Pleistocene with continued gene flow. Approximate Bayesian computation supported a scenario of isolation with migration until the Last Glacial Maximum, followed by more recent population expansion in north-eastern Brazil and stability at the southwest in South America. Isolation by environment was the best predictor of genetic distance between populations, which is in accordance with their different environmental niches. As Boana raniceps is a lowland species, steep slopes in the CBP likely restrained gene flow enough to sustain population divergence. We found evidence for major range contraction during the Last Glacial Maximum, raising the possibility of synergic action of climate change and the CBP compartmentalization in regulating migration. Main conclusions Our findings highlight how landscape and climatic changes can shape the diversification of DOF biota. Past climatic fluctuations and environmental resistance due to topography acted in concert, forming a semipermeable barrier to gene flow, promoting intraspecific differentiation in a continentally distributed species. (AU)

• Processo FAPESP: 04/00709-0 - Variabilidade genética e fenotípica de duas espécies de anuros neotropicais de área aberta
• Beneficiário: Cynthia Peralta de Almeida Prado
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 07/50587-7 - Filogeografia de duas espécies de anuros neotropicais de área aberta
• Beneficiário: Cynthia Peralta de Almeida Prado
• Modalidade de apoio: Bolsas no Exterior - Pesquisa
• Processo FAPESP: 13/50741-7 - Diversidade e conservação dos anfíbios brasileiros
• Beneficiário: Célio Fernando Baptista Haddad
• Modalidade de apoio: Auxílio à Pesquisa - Programa BIOTA - Temático
• Processo FAPESP: 18/03428-5 - Dimensions US-BIOTA-Sao Paulo: características preditoras da diversificação adaptativa na Diagonal Seca Brasileira
• Beneficiário: Vera Nisaka Solferini
• Modalidade de apoio: Auxílio à Pesquisa - Programa BIOTA - Temático