Table 6.
Intrastadial transmission Experiment 2, adult ticks were acquisition fed on T. equi infected horse Ho-266; males for 14 days (parasitemia averaged 1.19 × 10 5 genome copies per ml of blood over the 11 day acquisition feeding period, as determined by qPCR), females for 11 days (9.67 × 10 4 )
| Horse # | Tick species | Sex | Incubation (days) a | Transmission feed (days) | # recovered/# applied | # gut pos/# tested | # SG pos/# tested |
|---|---|---|---|---|---|---|---|
| Ho-209 |
A. caj |
♂♂ |
16 |
18 |
2/69 |
0/2 |
0/2 |
| |
|
♀♀b |
19 |
9-18c |
8/51 |
2/3 |
0/3 |
| Ho-211 |
D. var |
♂♂ |
16 |
18 |
15/33 |
0/15 |
0/15 |
| ♀♀b | 19 | 6-18c | 60/66 | 0/15 | 0/15 |
After acquisition feeding A. cajennense were placed on Ho-209 and D. variabilis on Ho- 211 for transmission feeding. Ho-209 acquired infection. After transmission feeding all males and a sample of females were dissected and their guts and salivary glands tested for infection by nPCR.
aTime between acquisition feed and transmission feed.
bPartially engorged females put on for reattachment.
cReflects the amount of time required for female ticks to feed to repletion and drop off.