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Updated: May 15, 2026

A Practical Guide to Phylogenetics for Nonexperts

A Practical Guide to Phylogenetics for Nonexperts

Published on: February 5, 2014

Species tree inference by the STAR method and its generalizations.

Elizabeth S Allman¹, James H Degnan, John A Rhodes

¹Department of Mathematics and Statistics, University of Alaska Fairbanks, Fairbanks, AK, USA.

Journal of Computational Biology : a Journal of Computational Molecular Cell Biology

|January 9, 2013

Summary

This study proves the STAR method is statistically consistent for inferring species trees from gene trees using the multispecies coalescent model. It also explores how gene tree sampling impacts species tree inference accuracy.

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Area of Science:

Phylogenetics
Computational Biology
Evolutionary Biology

Background:

The multispecies coalescent model explains gene tree formation from species trees.
Inferring species trees from gene trees is crucial for evolutionary studies.

Purpose of the Study:

To statistically validate the STAR method for species tree inference.
To analyze the influence of gene tree sampling on species tree accuracy.
To re-evaluate the STAR method as a clade-based consensus technique.

Main Methods:

Mathematical proofs of statistical consistency for the STAR method.
Analysis of generalized STAR methods under the multispecies coalescent model.
Investigation of gene tree sampling strategies.

Main Results:

The STAR method and its generalizations are statistically consistent for topological species tree inference.
Gene tree sampling schemes significantly impact species tree inference outcomes.
The original STAR method can be understood as a clade-based consensus approach.

Conclusions:

The STAR method provides a statistically sound framework for species tree inference.
Understanding gene tree sampling is vital for reliable phylogenetic reconstruction.
The STAR method's consensus nature offers insights into phylogenetic relationships.