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Lineages-through-time plots of neutral models for speciation.
Journal article

Lineages-through-time plots of neutral models for speciation.

  • Stadler T ETH Zürich, Institut für Integrative Biologie, Universitätstrasse 16, 8092 Zürich Switzerland. gernhard@ma.tum.de
  • 2008-10-16
Published in:
  • Mathematical biosciences. - 2008
Genetic Drift
Genetic Speciation
Models, Genetic
Phylogeny
Stochastic Processes
English Drawing inferences about macroevolutionary processes from phylogenetic trees is a fundamental challenge in evolutionary biology. Understanding stochastic models for speciation is an essential step in solving this challenge. We consider a neutral class of stochastic models for speciation, the constant rate birth-death process. For trees with n extant species - which might be derived from bigger trees via random taxon sampling - we calculate the expected time of the kth speciation event (k=1,...,n-1). Further, for a tree with n extant species, we calculate the density and expectation for the number of lineages at any time between the origin of the process and the present. With the developed methods, expected lineages-through-time (LTT) plots can be drawn analytically. The effect of random taxon sampling on LTT plots is discussed.
Language
  • English
Open access status
closed
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Persistent URL
https://sonar.ch/global/documents/123678
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