Volume 54, Issue 1
  • ISSN: 0002-9637
  • E-ISSN: 1476-1645



The reservoir competence of two lizard species, the southeastern five-lined skink () and the green anole (), for was evaluated. Skinks and anoles were exposed by needle inoculation or tick bite to . Xenodiagnosis with larval and culture of tissues were used to assess infection and the ability of infected lizards to infect attached ticks. Both lizard species were susceptible to by both routes of exposure. Xenodiagnostic ticks acquired spirochetes while feeding on both species. One tick that dropped from a skink on the ninth day after exposure was infected. The remainder of xenodiagnostic ticks that acquired spirochetes fed three weeks after exposure of the lizards to the spirochete. Lizards remained infectious to attached ticks for at least five weeks. Overall, more than 20% of xenodiagnostic larvae fed on southeastern five-lined skinks acquired spirochetes. Individual skinks infected up to 34% of attached ticks. A smaller proportion of ticks feeding on green anoles became infected. recovered from infected lizards retained their infectivity for mammalian hosts. The ability of the lizards to sustain a infection and infect attached ticks suggests that they may play a role in the maintenance of spirochete transmission.


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