Discriminant analysis of principal components: a new method for the analysis of genetically structured populations

Table 3 Results of the analyses of simulated data.

	Island Model	Hierarchical island model	Hierarchical stepping stone	Stepping stone
Number of populations (true K)	6	6	12	24
K inferred by DAPC	6 ([6,6])	6 ([6,8])	11 (8,12)	17.5 ([13,21])
K inferred by STRUCTURE	6 ([2,7])	3 ([2,6])	2 ([2,2])	2 ([2,5])
% of correct assignment by DAPC	98.2% ([96.3%,99%])	87.5% ([73.9%,91.2%])	89.7% ([87.9%,97.2%])	83.9% ([80%,88.7%])
% of correct assignment by STRUCTURE	98.6% ([98%,99.2%])	93.1% ([89.2%,95.5%])	NA⁽¹⁾	NA⁽¹⁾

This table reports the results of analyses of simulated data (see Figure 2) by DAPC and STRUCTURE. K refers to the number of clusters. Inferred numbers of clusters are reported as medians computed from the 10 replicates, with the range of variation provided within parentheses. ⁽¹⁾NA is indicated when the percentage of successful assignment could not be computed with STRUCTURE. In these cases, the 'optimal' K was very different from the true K, resulting in meaningless assignments with numerous empty clusters and subsequently very low proportion of correct assignments.

ISSN: 2730-6844