Exploring patterns of interspecific variation in quantitative traits using sequential phylogenetic eigenvector regressions

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dc.creatorDiniz Filho, José Alexandre Felizola
dc.creatorRangel, Thiago Fernando Lopes do Valle de Britto
dc.creatorSantos, Thiago
dc.creatorBini, Luis Mauricio
dc.date.accessioned2017-04-05T12:30:20Z
dc.date.available2017-04-05T12:30:20Z
dc.date.issued2012-04
dc.description.abstractA number of metrics have been developed for estimating phylogenetic signal in data and to evaluate correlated evolution, inferring broad-scale evolutionary and ecological processes. Here, we proposed an approach called phylogenetic signal-representation (PSR) curve, built upon phylogenetic eigenvector regression (PVR). In PVR, selected eigenvectors extracted from a phylogenetic distance matrix are used to model interspecific variation. In the PSR curve, sequential PVR models are fitted after successively increasing the number of eigenvectors and plotting their R2 against the accumulated eigenvalues. We used simulations to show that a linear PSR curve is expected under Brownian motion and that its shape changes under alternative evolutionary models. The PSR area, expressing deviations from Brownian motion, is strongly correlated (r = 0.873; P < 0.01) with Blomberg’s K-statistics, so nonlinear PSR curves reveal if traits are evolving at a slower or higher rate than expected by Brownian motion. The PSR area is also correlated with phylogenetic half-life under an Ornstein-Uhlenbeck process, suggesting how both methods describe the shape of the relationship between interspecific variation and time since divergence among species. The PSR curve provides an elegant exploratory method to understand deviations from Brownian motion, in terms of acceleration or deceleration of evolutionary rates occurring at large or small phylogenetic distances.pt_BR
dc.identifier.citationDINIZ FILHO, José Alexandre Felizola; RANGEL, Thiago F.; SANTOS, Thiago; BINI, Luis Mauricio. Exploring patterns of interspecific variation in quantitative traits using sequential phylogenetic eigenvector regressions. Evolution, Lancaster, v. 66, n. 4, p. 1079-1090, Apr. 2012.pt_BR
dc.identifier.doi10.1111/j.1558-5646.2011.01499.x
dc.identifier.issne- 1558-5646
dc.identifier.urihttp://repositorio.bc.ufg.br/handle/ri/11724
dc.language.isoengpt_BR
dc.publisherSociety for the Study of Evolutionpt_BR
dc.publisher.countryOutrospt_BR
dc.publisher.departmentInstituto de Ciências Biológicas - ICB (RG)pt_BR
dc.rightsAcesso Abertopt_BR
dc.subjectBrownian motionpt_BR
dc.subjectComparative methodspt_BR
dc.subjectK-statisticspt_BR
dc.subjectO-U processpt_BR
dc.subjectPhylogenetic eigenvector regressionpt_BR
dc.subjectPhylogenypt_BR
dc.titleExploring patterns of interspecific variation in quantitative traits using sequential phylogenetic eigenvector regressionspt_BR
dc.typeArtigopt_BR

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