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Background  Ixodid ticks play an important role in the transmission and ecology of infectious diseases. Information about the circulation of tick-borne bacteria in ticks is lacking in Ecuador. Our aims were to investigate the tick species that parasitize Andean tapirs and cattle, and those present in the vegetation from the buffer zone of the Antisana Ecological Reserve and Cayambe-Coca National Park (Ecuador), and to investigate the presence of tick-borne bacteria.    Methods  Tick species were identified based on morphologic and genetic criteria. Detection of tick-borne bacteria belonging to  Rickettsia, Anaplasma, Ehrlichia  and  Borrelia  genera was performed by PCRs.    Results  Our ticks included 91  Amblyomma multipunctum , 4  Amblyomma  spp., 60  Rhipicephalus microplus , 5  Ixodes  spp. and 1  Ixodes boliviensis . A potential  Candidatus  Rickettsia species closest to  Rickettsia monacensis  and  Rickettsia tamurae  (designated  Rickettsia  sp. 12G1) was detected in 3  R. microplus  (3/57, 5.3%). In addition,  Anaplasma  spp., assigned at least to  Anaplasma phagocytophilum  (or closely related genotypes) and  Anaplasma marginale , were found in 2  A. multipunctum  (2/87, 2.3%) and 13  R. microplus  (13/57, 22.8%).    Conclusions  This is the first description of  Rickettsia  sp. in ticks from Ecuador, and the analyses of sequences suggest the presence of a potential novel  Rickettsia  species. Ecuadorian ticks from Andear tapirs, cattle and vegetation belonging to  Amblyomma  and  Rhipicephalus  genera were infected with  Anaplasmataceae. Ehrlichia  spp. and  Borrelia burgdorferi  sensu lato were not found in any ticks.

parasites and vectors

Investigation of tick-borne bacteria (Rickettsia spp., Anaplasma spp., Ehrlichia spp. and Borrelia spp.) in ticks collected from Andean tapirs, cattle and vegetation from a protected area in Ecuador