| molecular evidence for a spotted fever group rickettsia species in the tick amblyomma longirostre in brazil. | two amblyomma longirostre adult male ticks were collected from a brazilian porcupine coendou prehensilis l. in the state of rondonia, western amazon, brazil. the two ticks were pooled for dna extraction and tested for the presence of rickettsial dna by amplifying portions of the glta, 17-kda, ompa, and ompb rickettsial genes by polymerase chain reaction (pcr). portions of the four genes were amplified from the sample and subsequently sequenced. these results indicated the presence of a rickettsi ... | 2004 | 15185961 |
| detection of a spotted fever group rickettsia in the tick haemaphysalis juxtakochi in rondonia, brazil. | the tick genus haemaphysalis is represented by four species in the new world, of which only the species haemaphysalis leporispalustris has been associated with rickettsiae. the present study reports for the first time the presence of a rickettsia strain in the tick haemaphysalis juxtakochi. a free-living male of h. juxtakochi, collected in the state of rondonia, western amazon, brazil, was subjected to dna extraction and tested by pcr targeting the four rickettsial genes: glta, 17-kda, ompa and ... | 2004 | 15631911 |