Metacommunity process rather than continental tectonic history better explains geographically structured phylogenies in legumes

Matt Lavin, Brian P. Schrire, Gwilym Lewis, R. Toby Pennington, Alfonso Delgado-Salinas, Mats Thulin, Colin E. Hughes, Angela Beyra Matos, Martin Wojciechowski

Research output: Contribution to journalArticle

122 Scopus citations

Abstract

Penalized likelihood estimated ages of both densely sampled intracontinental and sparsely sampled transcontinental crown clades in the legume family show a mostly Quaternary to Neogene age distribution. The mode ages of the intracontinental crown clades range from 4-6 Myr ago, whereas those of the transcontinental crown clades range from 8-16 Myr ago. Both of these young age estimates are detected despite methodological approaches that bias results toward older ages. Hypotheses that resort to vicariance or continental history to explain continental disjunct distributions are dismissed because they require mostly Palaeogene and older tectonic events. An alternative explanation centring on dispersal that may well explain the geographical as well as the ecological phylogenetic structure of legume phylogenies is Hubbell's unified neutral theory of biodiversity and biogeography. This is the only dispersalist theory that encompasses evolutionary time and makes predictions about phylogenetic structure.

Original languageEnglish (US)
Pages (from-to)1509-1522
Number of pages14
JournalPhilosophical Transactions of the Royal Society B: Biological Sciences
Volume359
Issue number1450
DOIs
StatePublished - Oct 29 2004

Keywords

  • Bayesian likelihood analysis
  • Intracontinental crown clades
  • Molecular age determination
  • Penalized likelihood rate smoothing
  • Transcontinental sister clades
  • Unified neutral theory of biodiversity and biogeography

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Agricultural and Biological Sciences(all)

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