Revista da Sociedade Brasileira de Medicina Tropical, 2009 Foi pesquisada a presença de riquétsias em 3.545 carrapatos Amblyomma cajennense e 2.666 Amblyomma dubitatum. Através do teste de hemolinfa, reação em cadeia pela polimerase e isolamento de rickettsia em cultivo celular, todos os Amblyomma cajennense ...
Richard Campos Pacheco +10 more
doaj +2 more sources
Rickettsial infection in Amblyomma cajennense ticks and capybaras (Hydrochoerus hydrochaeris) in a Brazilian spotted fever-endemic area [PDF]
Parasit Vectors, 2014 BackgroundBrazilian spotted fever (BSF), caused by the bacterium Rickettsia rickettsii, is the deadliest spotted fever of the world. In most of the BSF-endemic areas, capybaras (Hydrochoerus hydrochaeris) are the principal host for the tick Amblyomma ...
F. Krawczak +5 more
semanticscholar +2 more sources
Rickettsia infection in Amblyomma tonelliae, a tick species from the Amblyomma cajennense complex.
Ticks and Tick-borne Diseases, 2015 The present study was performed to evaluate the Rickettsia infection in Amblyomma tonelliae ticks from Argentina. All ticks were subjected to DNA extraction and tested by a battery of PCRs to amplify fragments of four rickettsial genes, 23S-5S, gltA ...
Evelina L. Tarragona +5 more
semanticscholar +4 more sources
First record of Rickettsia bellii in Amblyomma varium and Amblyomma goeldii from the Eastern Amazon [PDF]
Revista Brasileira de Parasitologia VeterináriaThis study investigated the presence of Rickettsia spp., Ehrlichia spp., Anaplasma spp., and Borrelia spp. DNA in questing ticks collected from a forest fragment under constant anthropogenic pressure in the state of Pará, Brazil. The fragment was divided
Izabela Mesquita Araújo +7 more
doaj +2 more sources
Study of infection by Rickettsiae of the spotted fever group in humans and ticks in an urban park located in the City of Londrina, State of Paraná, Brazil [PDF]
Revista da Sociedade Brasileira de Medicina Tropical, 2011 INTRODUCTION: Spotted fevers are emerging zoonoses caused by Rickettsia species in the spotted fever group (SFG). Rickettsia rickettsii is the main etiologic agent of Brazilian spotted fever (BSF) and it is transmitted by Amblyomma spp. ticks.
Roberta Santos Toledo +7 more
doaj +4 more sources
Equine piroplasmosis associated with Amblyomma cajennense Ticks, Texas, USA. [PDF]
Emerg Infect Dis, 2011 We report an outbreak of equine piroplasmosis in southern Texas, USA, in 2009. Infection prevalence reached 100% in some areas (292 infected horses). Amblyomma cajennense was the predominant tick and experimentally transmitted Theileria equi to an uninfected horse. We suggest that transmission by this tick species played a role in this outbreak.
Scoles GA +5 more
europepmc +5 more sources
Antiviral effect of the egg wax of Amblyomma cajennense (Acari: Ixodidae). [PDF]
Cytotechnology, 2012 The control of viral infections, especially those caused by influenza viruses, is of great interest in Public Health. Bio prospection has shown the presence of active principles in the hemolymph of arthropods, and in the salivary gland of ticks, and some of these are of interest for the development of new pharmacological drugs.
de Lima-Netto S +5 more
europepmc +4 more sources
Bats used as hosts by Amblyomma sculptum (Acari: Ixodidae) in Northeastern Brazil and its implications on tick-borne diseases [PDF]
Zoologia (Curitiba), 2020 Amblyomma Koch, 1844 is distributed worldwide, with ca. 130 species currently recognized. These ticks are vectors of pathogens to animals and humans, including the causative agent of the New World Rocky Mountain spotted fever ...
Roberto Leonan M. Novaes +4 more
doaj +3 more sources
Multiplex qPCR assay for identification and differentiation of Amblyomma americanum, Amblyomma cajennense, and Amblyomma maculatum (Ixodida: Ixodidae) tick species in the eastern United States. [PDF]
J Med Entomol, 2014 Zemtsova GE, Watkins NE, Levin ML.
europepmc +2 more sources
Lack of parthenogenesis by Amblyomma cajennense (Acari: Ixodidae) [PDF]
Memórias do Instituto Oswaldo Cruz, 2002 Some reproductive parameters of adult stages of Amblyomma cajennense ticks were studied. The capacity of virgin females to reproduce by parthenogenesis was evaluated, during an experimental infestation, in absence of males, on a horse (Equus cabalus). Ticks were spread either completely free or in limited sites on the body of the animal.
Carolina Maria Vianna Freitas +5 more
openaire +4 more sources