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Tipo do documento: Artigo
Título: Recovering species demographic history from multi-model inference: the case of a neotropical savanna tree species
Autor: Collevatti, Rosane Garcia
Ribeiro, Matheus de Souza Lima
Terribile, Levi Carina
Guedes, Ludymila B S
Rosa, Fernanda F
Telles, Mariana Pires de Campos
Abstract: Background: Glaciations were recurrent throughout the Quaternary and potentially shaped species genetic structure worldwide by affecting population dynamics. Here, we implemented a multi-model inference approach to recover the distribution dynamics and demographic history of a Neotropical savanna tree, Tabebuia aurea (Bignoniaceae). Exploring different algorithms and paleoclimatic simulations, we used ecological niche modelling to generate alternative hypotheses of potential demographic changes through the last glacial cycle and estimated genetic parameters using coalescent modelling. Results: Comparing predictions from demographic hypotheses with genetic parameters of modern populations, our findings revealed a likely scenario of population decline, with spatial displacement towards Northeast Brazil from the last glacial maximum to the mid-Holocene. Subsequently, populations expanded in response to the return of the climatically suitable conditions in Central-West Brazil. Nevertheless, a wide historical refugium across Central Brazil likely maintained large populations connected throughout time. The expected genetic signatures from such predicted distribution dynamics are also corroborated by spatial genetic structure observed in modern populations. Conclusion: By exploring uncertainties inherent in multiple working hypotheses, we have shown that multi-model inference is a fruitful and efficient approach to recover the nature, timing and geographical context of the Tabebuia aurea population dynamic in response to the Quaternary climate changes.
Palavras-chave: Coalescent simulation
Ecological niche modelling
Genetic connectivity
Habitat tracking
Multiple working hypotheses
Quaternary climate changes
País: brasil
Programa: Programa de Pós-Graduação em Ecologia e Evolução
Citação: COLLEVATTI, Rosane G.; RIBEIRO, Matheus S. Lima; TERRIBILE, Levi Carina; GUEDES, Ludymila B. S.; ROSA, Fernanda F.; TELLES, Mariana P. C. Recovering species demographic history from multi-model inference: the case of a Neotropical savanna tree species. BMC Evolutionary Biology, v. 14, p. 213-226, Oct. 2014.
Tipo de acesso: Acesso Aberto
Identificador do documento: 10.1186/s12862-014-0213-0
Identificador do documento: 10.1186/s12862-014-0213-0
Data de publicação: 11-Out-2014
Aparece nas coleções:ICB - Artigos publicados em periódicos

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