INVESTIGADORES
AVILA luciano Javier
congresos y reuniones científicas
Título:
Accuracy and Precision of Species Trees: Effects of Locus, Sequence, and Base-pair Sampling on Inference of Species Trees of the Liolaemus darwinii Group (Squamata, Liolaemidae)
Autor/es:
CAMARGO, A.; AVILA, L.J.; MORANDO, M.; SITES, J.W., JR.
Lugar:
Norman
Reunión:
Congreso; Evolution 2011; 2011
Institución organizadora:
SSE-UK at Norman
Resumen:
In modern molecular phylogenetics, species trees are estimated from gene trees with coalescent-based methods. We assessed the accuracy and precision of species trees estimated with *BEAST based on subsamples of loci, sequences, and base-pairs, of a 20-locus data set for 16 species of the Liolaemus darwinii group. We found an increase in accuracy and precision with number of loci, but a decrease in accuracy when only 1 sequence/species or 25% of the base-pairs were analyzed. Accuracy was lowest when using the most heterogeneous gene trees. Our results and previous simulation suggest that there is a study-specific optimal range of sampling effort.