Detection of <italic>Rickettsia bellii</italic> and <italic>Rickettsia amblyommii</italic> in <italic>Amblyomma longirostre</italic> (Acari: Ixodidae) from Bahia state, Northeast Brazil

Abstract

Studies investigating rickettsial infections in ticks parasitizing wild animals in the Northeast region of Brazil have been confined to the detection of Rickettsia amblyommii in immature stages of Amblyomma longirostre collected from birds in the state of Bahia, and in immatures and females of Amblyomma auriculariumcollected from the striped hog-nosed skunk (Conepatus semistriatus) and armadillos (Euphractus sexcinctus) in the state of Pernambuco. The current study extends the distribution of R. amblyommii (strain Aranha), which was detected in A. longirostre collected from the thin-spined porcupine Chaetomys subspinosus and the hairy dwarf porcupine Coendou insidiosus. In addition, we report the first detection of Rickettsia bellii in adults of A. longirostre collected from C. insidiosus in the state of Bahia.

Rickettsia amblyommii associado a roedores e marsupiais nativos da Estação Experimental Rafael Fernandes da UFERSA, Rio Grande do Norte

“…A infestação de carrapatos do gênero Amblyomma em pequenos mamíferos, constitui um problema de importância epidemiológica para a região do semiárido, uma vez que, segundo McIntosh et al (2015) são potenciais vetores na transmissão de rickettsioses, desde as infecções mais brandas até as letais ao ser humano. Esta pesquisa registra pela primeira vez a ocorrência de Rickettsia amblyommii em roedores e marsupiais silvestres e em A. auricularium, no município de Mossoró, Rio Grande do Norte.…”

Rickettsia spp., Ehrlichia spp. e Anaplasma spp. em carrapatos de vida livre nas mesorregiões Sul Fluminense e Metropolitana do Rio de Janeiro, RJ

“…Rickettsia bellii has already been identified in several species of ticks in Brazil (Estrada et al, 2006;Horta et al, 2007;Labruna et al, 2004aLabruna et al, , 2004bMcIntosh et al, 2015). In a Brazilian native people's reservation in the state of Mato Grosso, the circulation of R. bellii in Amblyomma sp.…”

“…In a Brazilian native people's reservation in the state of Mato Grosso, the circulation of R. bellii in Amblyomma sp. larvae and A. sculptum adult was recorded by Moura-Martiniano et al (2014). In areas of occurrence of Brazilian Spotted Fever (BSF) in the state of Mato Grosso, Lopes et al (2014) confirmed the presence of R. bellii in a specimen of A. dubitatum, suggesting the importance of these species of rickettsiae as a potential threat for the native local population and for differential diagnostic of BSF, nevertheless of unknown pathogenicity for humans.…”

Ticks and Associated Pathogens From Rescued Wild Animals in Rainforest Fragments of Northeastern Brazil

“…Several studies have described ticks from the Amblyomma genus parasitizing reptiles, amphibians, avians, and mammalians (7,20,21). To date, 23 tick species have been identified in the Amazon region, with Amblyomma being the most prevalent genus (22).…”