Table 2.

Results from ELW and SH tests performed on the set of seven different hypotheses concerning the phylogenetic timing of dcr-1 duplication in aphids

Hypothesis	Brief description of topology		ELW	SH
		δ	c	p-value
1	Amino acid ML tree (Figure 2)	0.87	0.1665	0.762
2	R. padi dcr-1 basal	0.87	0.1673	0.761
3	A. gossypii dcr-1 basal	Best	0.3947	1.000
4	Aphidini dcr-1 in dcr-1/1a group	1.73	0.1122	0.546
5	Aphidini dcr-1 in dcr-1b group	1.73	0.1123	0.546
6	M. persicae dcr-1 basal to Macrosiphini	10.03	0.0292*	0.111
7	M. persicae dcr-1 in dcr-1b group	10.36	0.0177*	0.091

The complete set of topologies can be found in Additional file 1: Figure S3. δ: difference in -lnL from best topology as calculated by TREE-PUZZLE. c: confidence value (expected likelihood weigth). A * denotes topologies significantly out of the confidence set in the ELW test and topologies significantly worse than the ML tree in the SH test.