Table 1.
Statistical analyses of vector competence parameters after infections with Rift Valley Fever virus (RVFV) and West Nile virus lineage 1a (WNV). (In these analyses, the influence of mosquito lines (Slab, SA2 and SR), arboviruses (RVFV and WNV) and day post-infections (3, 7, 14 and 21 dpi) were tested. d.f. is the degree of freedom and χ2 is the Chi-square value. Significance of variables was obtained after downward selection based on Akaike information criterion (AIC). Variables with significant impact in the minimal model are shown in bold.)
| infection rate |
dissemination rate |
transmission rate |
transmission efficiency |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| source | χ2 | d.f. | p-value | χ2 | d.f. | p-value | χ2 | d.f. | p-value | χ2 | d.f. | p-value |
| mosquito line (ML) | 59.8 | 2 | <0.0001 | 6.32 | 2 | 0.042 | 0.04 | 1 | 0.843 | 3.04 | 2 | 0.219 |
| arbovirus | 0.53 | 1 | 0.467 | 4.13 | 1 | 0.042 | 2.37 | 1 | 0.124 | 2.87 | 1 | 0.09 |
| days post-infection (dpi) | 3.07 | 1 | 0.061 | 0.11 | 1 | 0.746 | 1.04 | 1 | 0.309 | 0.65 | 1 | 0.421 |
| ML × arbovirus | 11.47 | 1 | 0.003 | 8.54 | 2 | 0.014 | 4.93 | 1 | 0.026 | 6.96 | 2 | 0.031 |
| ML × dpi | — | — | — | 3.91 | 2 | 0.142 | 0.49 | 1 | 0.486 | 1.6 | 2 | 0.448 |
| arbovirus × dpi | 5.45 | 1 | 0.019 | 27.83 | 1 | <0.0001 | 3.55 | 1 | 0.059 | 15.92 | 1 | <0.0001 |
| ML × arbovirus × dpi | — | — | — | 15.25 | 2 | 0.0005 | 4.20 | 1 | 0.040 | 11.37 | 2 | 0.003 |