Volume 9, Number 1—January 2003
Research
Seasonal Dynamics of Anaplasma phagocytophila in a Rodent-Tick (Ixodes trianguliceps) System, United Kingdom
Kevin J. Bown*
, Michael Begon*, Malcolm Bennett*, Zerai Woldehiwet*, and Nicholas H. Ogden*
, Michael Begon*, Malcolm Bennett*, Zerai Woldehiwet*, and Nicholas H. Ogden*Table 3
Determinants of parasitism of rodents by larval, nymphal, and adult Ixodes trianguliceps ticks in the most parsimonious negative binomial regression modelsa
| Variable | Coefficient | SEb | p value |
|---|---|---|---|
| Larvae |
|||
| Rodent body mass (g) |
0.029 |
0.013 |
0.03 |
| Month (3-point scale) |
0.712 |
0.063 |
<0.001 |
| Male bank voles vs. wood mice and female bank voles |
0.580 |
0.279 |
0.04 |
| Wood mice vs. female bank voles |
0.462 |
0.229 |
0.04 |
| Intercept |
–0.702 |
0.468 |
|
| Nymphs |
|||
| Rodent body mass (g) |
0.097 |
0.030 |
0.001 |
| Month (2-point scale) |
1.761 |
0.250 |
<0.001 |
| Male bank voles vs. wood mice and female bank voles |
2.394 |
0.832 |
0.004 |
| Intercept |
–6.590 |
0.915 |
|
| Adults |
|||
| Rodent body mass (g) |
0.170 |
0.055 |
0.002 |
| Intercept | –3.769 | 1.326 |
aRodent ID included as a random effect.
bSE, standard error.
