Comparative Evaluation of Infected and Noninfected Amblyomma triste Ticks with Rickettsia parkeri, the Agent of an Emerging Rickettsiosis in the New World
Table 2
Molting and oviposition success of Amblyomma triste ticks infected by Rickettsia parkeri (infected group) and noninfected (control group) through four consecutive generations (F1 to F4) in the laboratory.
Tick generation
Number nymphs that molted to adults/Number recovered engorged nymphs (% molting success)
Number females that oviposited/Number recovered engorged females (% oviposition success)
Infected
Control
Infected
Control
F1
274/558 (49.1)
537/656 (81.9)*
18/19 (94.7%)
9/9 (100)
F2
1154/1580 (73.0)
1089/1093 (99.6)*
18/21 (85.7%)
7/7 (100)
F3
100/240 (41.7)
299/321 (93.1)*
10/10 (100)
7/7 (100)
F4
404/552 (73.2)
411/457 (89.9)*
10/10 (100)
5/5 (100)
Total
1932/2930 (65.9)
2336/2527 (92.4)*
56/60 (93.3)
28/28 (100)
ā*means that molting or oviposition success values for infected and control ticks (horizontal lines) of the same tick stage were significantly different ().