Altitudinal Assessment of Amblyomma aureolatum and Amblyomma ovale (Acari: Ixodidae), Vectors of Spotted Fever Group Rickettsiosis in the State of São Paulo, Brazil

Journal of Medical Entomology
Jonata M BarbieriMarcelo B Labruna

Abstract

Amblyomma aureolatum (Pallas) and Amblyomma ovale Koch are common ectoparasites of domestic dogs in São Paulo state, southeastern Brazil, where they are vectors of distinct spotted fever group rickettsioses, one caused by Rickettsia rickettsii (transmitted by A. aureolatum), and the other caused by Rickettsia sp. strain Atlantic rainforest (transmitted by A. ovale). For the present study, we performed an altitudinal assessment of all 1992-2012 records of A. aureolatum and A. ovale retrieved from a tick collection. The municipalities with A. ovale records presented significantly (P < 0.05) lower altitude than the ones with A. aureolatum records; the higher the altitude, the lower the chances for the occurrence of A. ovale and the greater the likelihood for the occurrence of A. aureolatum. Regarding A. aureolatum, the chances of finding it in municipalities between 101 and 700 m are nine times higher than in municipalities at ≤ 100 m, or 31.5 times higher in municipalities above 700 m, when compared with municipalities at ≤ 100 m. The reverse was observed for A. ovale, which had its odds ratio diminishing at higher altitudes. These findings have a major role to public health, as A. aureolatum is associated with the transmission o...Continue Reading

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Citations

May 28, 2016·Journal of Medical Entomology·Maria OgrzewalskaMarcelo B Labruna
Jul 20, 2016·Ticks and Tick-borne Diseases·Hermes Ribeiro LuzJoão Luiz H Faccini
Jun 13, 2020·Zoonoses and Public Health·Claudia Mello RibeiroMarcos Amaku
Feb 26, 2019·Experimental & Applied Acarology·Gislene F S R FournierRicardo A Dias
May 31, 2018·Revista brasileira de parasitologia veterinária = Brazilian journal of veterinary parasitology : Órgão Oficial do Colégio Brasileiro de Parasitologia Veterinária·Hermes Ribeiro LuzJoão Luiz Horacio Faccini
Dec 29, 2020·Ticks and Tick-borne Diseases·Ricardo C ArraisMarcelo B Labruna
Apr 1, 2021·Parasitology Research·Marcos Antônio Bezerra-SantosDomenico Otranto

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