Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8507475 | Ticks and Tick-borne Diseases | 2018 | 4 Pages |
Abstract
This study aimed to evaluate, by means of artificial feeding, the interaction between a pathogenic rickettsia and the hard tick R. microplus. We used partially engorged females fed on calves free of Rickettsia spp. Group 1 (G1), containing 20 ticks, was fed bovine blood only. Group 2 (G2), containing 20 ticks, was fed blood containing uninfected VERO cells, and group 3 (G3), containing 40 ticks, was fed blood containing VERO cells infected with Rickettsia parkeri. Biological parameters of the non-parasitic phase and a possible bacterial transmission to the tick eggs and to guinea pigs were evaluated. At the end of oviposition, all G3 females were PCR-positive for genes specific for the genus Rickettsia. Although no guinea pigs were infected, the experimental infection of R. microplus by R. parkeri caused a deleterious effect on the oviposition and provided the first report of transovarian transmission of rickettsia in this tick.
Keywords
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Authors
Matheus Dias Cordeiro, Bruna de Azevedo Baêta, Patricia Barizon Cepeda, Rafaella Câmara Teixeira, Carla Carolina Dias Uzedo Ribeiro, Jaqueline Rodrigues de Almeida Valim, Adriano Pinter, Adivaldo Henrique da Fonseca,