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Patterns of mammalian diversification in recent evolutionary times: global tendencies and methodological issues

AutorSoria Carrasco, Víctor ; Castresana, José
Palabras claveDiversification
Niche saturation
Pleistocene glaciations
Sequence saturation
Fecha de publicacióndic-2011
EditorBlackwell Publishing
CitaciónJournal of Evolutionary Biology 24(12): 2611-2623 (2011)
ResumenChanges in diversification patterns estimated from phylogenetic trees are an important source of information about the dynamics of evolution. To study the diversification of mammals, we reconstructed phylogenetic trees of 29 families and fitted both constant-rate and variable-rate models of diversification. In addition, we investigated the effect of clock models and phylogenetic reconstruction problems on diversification analyses. We observed, first, that none of the families increased its diversification rate during the last few million years, including the Pleistocene. Furthermore, we detected a decrease in diversification that, after application of different tests, was significant only for a minority of families. However, when diversification variation was analysed in a combined tree of all families, a global decline in diversification became significant. Therefore, although distorted by some methodological artefacts, we found an underlying signal of gradually decreasing diversification that suggests that ecological factors may have shaped the recent diversification of mammals. © 2011 The Authors. Journal of Evolutionary Biology © 2011 European Society For Evolutionary Biology.
Versión del editorhttp://dx.doi.org/10.1111/j.1420-9101.2011.02384.x
Identificadoresdoi: 10.1111/j.1420-9101.2011.02384.x
issn: 1010-061X
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