Table 2.
Effects of spotted fever group rickettsiae on their tick vectors.
| Rickettsia species, isolate | Tick species (origin) | Effects | Reference |
|---|---|---|---|
| R. rickettsii, Sawtooth | D. andersoni (Montana) | ↓Larval and nymphal molting | (69) |
| ↓Female feeding success | |||
| ↓Oviposition | |||
| ↓Reduced transmission of rickettsiae | |||
| R. rickettsii, Como-96 | D. andersoni (Montana) | ↓Larval and nymphal molting | (69) |
| ↓Female feeding success | |||
| ↓Reduced transmission of rickettsiae | |||
| R. rickettsii, Wachsmuth | D. andersoni (Montana) | ↓Larval and nymphal molting | (69) |
| ↓Female feeding success | |||
| ↓Reduced transmission of rickettsiae | |||
| R. rickettsii, Taiaçu | A. aureolatum (Atibaia, Saõ Paulo) | ↓Larval and nymphal molting | (112) |
| ↓Oviposition | |||
| R. rickettsii, Taiaçu | A. cajennense | ↓Transovarial transmission | (105) |
| ↓Reproductive performance | |||
| R. rickettsii, Taiaçu | Rh. sanguineus (Seropédica, Rio de Janeiro) | Low filial infection rate (<50%) | (34) |
| Low larva infection rate (7.8–8.3%) | |||
| R. rickettsii, Taiaçu | Haemaphysalis leporispalustris | ↑Biological performance | (111) |
| R. peacockii, Skalkaho | D. andersoni (Montana) | No effects | (69) |
| R. conorii, Malish (VR163) | Rh. sanguineus (Thailand) | Detrimental effect | (107) |
| R. conorii conorii (strain not identified) | Rh. sanguineus (Southern France) | ↓Molting success | (113) |
| ↓Longevity of nymphs | |||
| ↓Infection rate in survived ticks | |||
| ↑Mortality | |||
| R. conorii conorii, Ghazonet | Rh. sanguineus (Algeria) | No detrimental effect observed | (114) |
| 100% Transovarial transmission | |||
| 99% Filial infection rate | |||
| R. conorii conorii, Malish (VR163) | Rh. sanguineus (North American and Mediterranean colonies) | Significant effect observed | (108) |
| R. conorii israelensis, ISTT-CDC1 | Rh. sanguineus (North American and Mediterranean colonies) | No significant effect observed | (108, 109) |
| R. massiliae, Bar 29 | Rh. turanicus (Corsica) | No detrimental effects observed | (110) |
| Rickettsia africae, ESF 2500-1 | Amblyomma variegatum, (Ivory Cost) | No detrimental effects observed | (115) |
| 100% Transovarial transmission | |||
| 93.4% Filial infection rate | |||
| R. montanensis (strain not identified) | D. variabilis (Old Dominion University colony) | No detrimental effects observed | (116) |
| R. montanensis, M/5-6 | D. andersoni (Montana) | ↓Rate of transovarial transmission | (69) |
| R. rhipicephali (strain not identified) | D. variabilis (Old Dominion University colony) | ↓Egg mass weight | (116) |
| ↓Rate of transovarial transmission |