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Fitting macroevolutionary models to phylogenies: an example using vertebrate body sizes Naturalis
Mooers, Arne Ø.; Schluter, Dolph.
How do traits change through time and with speciation? We present a simple and generally applicable method for comparing various models of the macroevolution of traits within a maximum likelihood framework. We illustrate four such models: 1) variance among species accumulates in direct proportion to time separating them (gradual model); 2) variation accumulates with the number of speciation events separating them (speciational model); 3) differences between species are unrelated to phylogenetic relatedness (pitchfork model); and 4) a free model where the trait evolves at its own idiosyncratic rate among lineages. Using species-specific body size, we compare the four models across two data sets: twenty-one clades of vertebrate species, and two clades of...
Tipo: Article / Letter to the editor Palavras-chave: Brownian motion; Macroevolution; Maximum likelihood; Phylogenies; Vertebrate body size; Evolution.
Ano: 1998 URL: http://www.repository.naturalis.nl/record/534379
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Modeling body size evolution in Felidae under alternative phylogenetic hypotheses Genet. Mol. Biol.
Diniz-Filho,José Alexandre Felizola; Nabout,João Carlos.
The use of phylogenetic comparative methods in ecological research has advanced during the last twenty years, mainly due to accurate phylogenetic reconstructions based on molecular data and computational and statistical advances. We used phylogenetic correlograms and phylogenetic eigenvector regression (PVR) to model body size evolution in 35 worldwide Felidae (Mammalia, Carnivora) species using two alternative phylogenies and published body size data. The purpose was not to contrast the phylogenetic hypotheses but to evaluate how analyses of body size evolution patterns can be affected by the phylogeny used for comparative analyses (CA). Both phylogenies produced a strong phylogenetic pattern, with closely related species having similar body sizes and the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Autocorrelation; Body size; Felidae; Phylogenetic eigenvector regression; Phylogenies.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572009000100026
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