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Outgroup effects on root position and tree topology in the AFLP phylogeny of a rapidly radiating lineage of cichlid fish.

Kirchberger PC, Sefc KM, Sturmbauer C, Koblmüller S - Mol. Phylogenet. Evol. (2013)

Bottom Line: Here we analyze >1000 AFLP markers to address the evolutionary history of the Limnochromini, a cichlid fish lineage endemic to Lake Tanganyika, and to test for potential effects of outgroup composition on tree topology.Bootstrap support for ingroup nodes was lower in outgroup-rooted than in midpoint-rooted trees, and root positions and ingroup tree topologies varied in response to the composition of the outgroup.These observations suggest that the predisposition for homoplastic evolution makes AFLP-based phylogenetic analyses particularly susceptible to random biases introduced by too-distant outgroup taxa.

View Article: PubMed Central - PubMed

Affiliation: Department of Zoology, Karl-Franzens-University Graz, Universitätsplatz 2, A-8010 Graz, Austria.

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Outgroup effects on root position and tree topology in the AFLP phylogeny of a rapidly radiating lineage of cichlid fish.

Kirchberger PC, Sefc KM, Sturmbauer C, Koblmüller S - Mol. Phylogenet. Evol. (2013)

© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3842234&req=5

Bottom Line: Here we analyze >1000 AFLP markers to address the evolutionary history of the Limnochromini, a cichlid fish lineage endemic to Lake Tanganyika, and to test for potential effects of outgroup composition on tree topology.Bootstrap support for ingroup nodes was lower in outgroup-rooted than in midpoint-rooted trees, and root positions and ingroup tree topologies varied in response to the composition of the outgroup.These observations suggest that the predisposition for homoplastic evolution makes AFLP-based phylogenetic analyses particularly susceptible to random biases introduced by too-distant outgroup taxa.

View Article: PubMed Central - PubMed

Affiliation: Department of Zoology, Karl-Franzens-University Graz, Universitätsplatz 2, A-8010 Graz, Austria.

Show MeSH