| spotted fever group rickettsia in brown dog ticks rhipicephalus sanguineus in southwestern spain. | a total of 2,229 adults ticks (1,428 males and 801 females) belonging to the brown dog tick, rhipicephalus sanguineus latreille, 1806, collected from dogs in seville province (andalusia), distributed in 500 lots ranging from one to eight specimens per lot, were examined for the presence of rickettsiae by molecular techniques. specific rickettsiae dna were detected in 90 lots (18%) of ticks tested. sequence analysis of amplicons revealed that r. sanguineus ticks were infected exclusively with ric ... | 2008 | 18340465 |