Molecular phylogenetics of the exoneurine allodapine bees reveal an ancient and puzzling dispersal from Africa to Australia

Systematic Biology
M P SchwarzS J Cooper

Abstract

Previous phylogenetic studies of the bee tribe Allodapini suggested a puzzling biogeographic problem: one of the key basal divergences involved separation of the southern African and southern Australian clades at a very early stage in allodapine evolution, but no taxa occur in the Palaearctic or Asian regions that might suggest a Laurasian dispersal route. However, these studies lacked sufficient sequence data and appropriate maximum likelihood partition models to provide reliable phylogenetic estimates and enable alternative biogeographic hypotheses to be distinguished. Using Bayesian and penalized likelihood approaches and an expanded sequence and taxon set we examine phylogenetic relationships between the Australian, African, and Malagasy groups and estimate divergence times for key nodes. We show that divergence of the three basal Australian clades (known as the exoneurines) occurred at least 25 Mya following a single colonization event, and that this group diverged from the African + Madagascan clade at least 30 Mya, but actual divergence dates are likely to be much older than these very conservative limits. The bifurcation order of the exoneurine clades was not resolved and analyses could not rule out the existence of a h...Continue Reading

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Citations

Nov 1, 2009·Integrative and Comparative Biology·Timothy J BradleySteve P Yanoviak
Feb 1, 2013·Proceedings. Biological Sciences·Sophie Cardinal, Bryan N Danforth
Jul 27, 2006·Annual Review of Entomology·Michael P SchwarzBryan N Danforth
Jan 31, 2008·BMC Evolutionary Biology·Sergio V FloresBryant F McAllister
Jun 23, 2011·PloS One·Sophie Cardinal, Bryan N Danforth
Sep 1, 2012·Annual Review of Entomology·Bryan N DanforthDenis Michez
Nov 30, 2014·Molecular Biology and Evolution·Nicole M FoleyEmma C Teeling
Mar 22, 2016·Molecular Phylogenetics and Evolution·Michael Forthman, Christiane Weirauch
Sep 22, 2009·Molecular Phylogenetics and Evolution·Michael D CrispDavid M J S Bowman
Jan 19, 2010·Molecular Phylogenetics and Evolution·Sandra M RehanMichael P Schwarz
Jul 6, 2010·Molecular Phylogenetics and Evolution·Luis Flores-PradoBryant F McAllister

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