The aim of this study was to determine the occurrence of emerging arthropod-borne pathogens Anaplasma, Ehrlichia and Rickettsia infection in ticks (Acari: Ixodidae) and fleas (Insecta: Siphonaptera) collected from dogs and horses within municipality of Itaboraí, Rio de Janeiro State, Southern Brazil. Samples from 280 ticks and two fleas were subjected to family or/and genus specific PCR for Anaplasmataceae, Ehrlichia and Rickettsia, followed by DNA sequencing to ensure pathogen identity. In ticks Rhipicephalus sanguineus collected from dogs the DNAof Anaplasma platys and Ehrlichia canis was detected in 6.8% and 2.2% samples respectively. In two R. sanguineus confection with two pathogens was observed. In Dermacentor nitens ticks, collected from horses Francisella-like endosymbiont was found in 42.8% samples. DNA of Rickettsia felis and Wolbachia pipetens was detected in fleas Ctenocephalides canis fleas. No DNA of Rickettsia was found in tested ticks. The findings contribute to our knowledge of tick-borne bacteria, ticks and endosymbionts distribution in Brazil.
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