Table 1 Results of the Spearman's rank correlation tests. The outputs of the Spearman's rank correlation test (correlation coefficient rs and p-values) are used to explore the relationship between the rate of molecular evolution and the biological variables under study (body size and species number). Results are presented for nuclear genes, mitochondrial genes and concatenation of mitochondrial genes. Concatenations of mitochondrial genes are given for the complete set of taxa (C100), and a set excluding pairs of taxa that contained more than 20% of missing sequence (C20). Significant correlations at the 5% level are shown in bold.
| Â | Â | Molecular rate vs body size | Molecular rate vs species number | ||
|---|---|---|---|---|---|
| Â | Â | rs (p-value) | rs (p-value) | ||
Genes | No partition | Codon positions partitions | No partition | Codon positions partitions | |
Nuclear | 18S | -0.05 (0.807) | - | -0.01 (0.969) | - |
| Â | 28S | 0.08 (0.745) | - | 0.15 (0.535) | - |
| Â | ef1a | -0.39 (0.165) | -0.42 (0.141) | -0.04 (0.905) | 0.04 (0.886) |
Mitochondrial | COI | -0.12 (0.617) | -0.19 (0.422) | 0.07 (0.776) | 0.22 (0.345) |
| Â | COII | -0.55 (0.025) | -0.50 (0.043) | 0.33 (0.201) | 0.28 (0.272) |
| Â | COIII | -0.35 (0.174) | -0.44 (0.082) | 0.52 (0.031) | 0.49 (0.047) |
| Â | cytB | -0.42 (0.106) | -0.48 (0.060) | 0.42 (0.103) | 0.32 (0.221) |
| Â | NADH1 | -0.35 (0.165) | -0.34 (0.184) | 0.29 (0.260) | 0.36 (0.153) |
| Â | NADH4 | -0.61 (0.012) | -0.45 (0.074) | 0.06 (0.815) | 0.05 (0.863) |
Concatenation | C100 | -0.32 (0.175) | -0.29 (0.214) | 0.22 (0.341) | 0.16 (0.497) |
| Â | C20 | -0.53 (0.037) | -0.51 (0.046) | 0.39 (0.132) | 0.35 (0.187) |