Table 5.
Multilocus linkage disequilibrium analysis of the 160 Brucella isolates examined.
| Group (n) | V e a | V o a | sI A b | P b |
| Total isolates (160) | 2.022 | 5.719 | 0.2286 | 0.001 |
| Total STs (27) | 1.825 | 4.679 | 0.1954 | 0.001 |
| B. abortus (21) | 0.958 | 2.913 | 0.2549 | 0.001 |
| B. abortus STs (6) | 1.564 | 5.067 | 0.2798 | 0.007 |
| B. melitensis (21) | 0.799 | 1.302 | 0.0787 | 0.001 |
| B. melitensis STs (6) | 0.924 | 0.695 | -0.0310 | 0.808 |
| B. suis (50) | 1.154 | 3.646 | 0.2699 | 0.001 |
| B. suis STs (6) | 1.164 | 1.981 | 0.0876 | 0.054 |
| Marine mammal (46) | 1.257 | 3.171 | 0.1903 | 0.001 |
| Marine mammal STs (5) | 1.380 | 1.333 | -0.0042 | 0.557 |
a Veis the expected variance if the alleles present at different loci in a strain are independent (i.e. no linkage disequilibrium), Vo is the observed variance.
b Standardised IA [26] calculated using LIAN3.1. P = probability of observing a Vo/Ve ratio equal or more extreme to that found in the original data based on 1,000 Monte Carlo randomisations.