Use este identificador para citar ou linkar para este item: http://repositorio.bc.ufg.br/handle/ri/11573
Tipo do documento: Artigo
Título: Multiple Mantel tests and isolation-bydistance, taking into account long-term historical divergence
Autor: Telles, Mariana Pires de Campos
Diniz Filho, José Alexandre Felizola
Abstract: Mantel tests of matrix correspondence have been widely used in population genetics to examine microevolutionary processes, such as isolation-by-distance (IBD). We used partial and multiple Mantel tests to simultaneously test long-term historical effects and current divergence and equilibrium processes, such as IBD. We used these procedures to calculate genetic divergence among Eugenia dysenterica (Myrtaceae) populations in Central Brazil. The Nei’s genetic distances between pairs of local populations were strongly correlated with geographic distances, suggesting an IBD process, but field observations and the geographic distribution of the samples suggest that populations may have been subjected to more complex evolutionary processes of genetic divergence. Partial Mantel regression was used to partition the effects of geographic structure and long-term divergence associated with a possible historical barrier. The R2 of the model with both effects was 73.3%, and after the partition 21.9% of the variation in the genetic distances could be attributed to long-term historical divergence alone, whereas only 1.5% of the variation in genetic distances could be attributed to IBD. As expected, there was a large overlap between these processes when explaining genetic divergence, so it was not possible to entirely partition divergence between historical and contemporary processes.
Palavras-chave: Mantel test
Isolation-by-distance
Isozymes
Eugenia
Genetic distances
Partial Mantel test
País: Brasil
Instituição: Fundação de Pesquisas Científicas de Ribeirão Preto
Unidade acadêmica: Instituto de Ciências Biológicas - ICB (RG)
Citação: TELLES, Mariana Pires de Campos; DINIZ FILHO, José Alexandre Felizola. Multiple mantel tests and isolation-by-distance, taking into account long-term historical divergence. Genetics and Molecular Research, Ribeirão Preto, v. 4, n. 4, p. 742-748, Dec. 2005.
Tipo de acesso: Acesso Aberto
URI: http://repositorio.bc.ufg.br/handle/ri/11573
Data de publicação: 9-Dez-2005
Aparece nas coleções:ICB - Artigos publicados em periódicos

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