RESUMO
The argasid ticks A. lahorensis can be infected with Coxiella burnetii on feeding on an infected rabbit. The adoptive pathogen reproduces in the ticks and accumulates in them up to 10(10) ID50 g(-1). Coxiella persists in the ticks at this level up to 156 days (the time of observation). The infected ticks transmit Coxiella to guinea pigs while sucking. The ticks show transovarial transmission of Coxilla during metamorphosis. On this basis and with consideration for the fact that A. lahorensis uses a wide host range, it can long starve and retains Coxiella burnetii in the foci of Q fever.
Assuntos
Vetores Aracnídeos/microbiologia , Coxiella burnetii/crescimento & desenvolvimento , Febre Q/transmissão , Carrapatos/microbiologia , Animais , Vetores Aracnídeos/crescimento & desenvolvimento , Feminino , Cobaias , Metamorfose Biológica , Coelhos , Carrapatos/crescimento & desenvolvimentoRESUMO
A race of clothes lice adapted to feeding on rabbits is kept at a laboratory longer than 50 years. For this period, more than 850 insect generations undergoing no change in a number of biological tests and morphological indices have been obtained. They have retained a high susceptibility to Provacheck rickettsia infection. All infected lice die, partially with the signs of hemolytic imbibition. Their rickettsial accumulation is as high as 10(5.0) ID50 per insect for albino rats.
