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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Characterization of Genetic Variability and Population Structure of the Tick Amblyomma aureolatum (Acari: Ixodidae)

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Ogrzewalska, Maria [1, 2] ; Schwarcz, Kaiser [3] ; Bajay, Miklos M. [4] ; Bajay, Stephanie K. [4] ; Pinheiro, Jose B. [4] ; Zucchi, Maria I. [5] ; Pinter, Adriano [6] ; Labruna, Marcelo B. [7]
Total Authors: 8
[1] Fundacao Oswaldo Cruz, Inst Oswaldo Cruz, Lab Hantaviroses & Rickettsioses, Av Brasil 4365, BR-21045900 Rio De Janeiro, RJ - Brazil
[2] Univ Sao Paulo, Dept Med Vet Prevent & Saude Anim, Fac Med Vet & Zootecnia, Av Prof Orlando Marques Paiva 87, BR-05508270 Sao Paulo, SP - Brazil
[3] Univ Estadual Campinas, Inst Biol, Dept Genet & Evolucao & Bioagentes, R Bertrand Russel S-N, Caixa Postal 6109, BR-13083970 Campinas, SP - Brazil
[4] Univ Sao Paulo, Dept Genet, Escola Super Agr Luiz de Queiroz, Av Padua Dias 11, BR-13418900 Piracicaba, SP - Brazil
[5] Superintendencia Controle Endemias Estado Sao Paul, R Cardeal Arcoverde 2878, BR-05408003 Sao Paulo, SP - Brazil
[6] Agencia Paulista Tecnol Agronegocios, Polo Ctr Sul, Av Barao Itapura 1481, BR-13020902 Campinas, SP - Brazil
[7] Univ Sao Paulo, Dept Med Vet Prevent & Saude Anim, Fac Med Vet & Zootecnia, Sao Paulo, SP - Brazil
Total Affiliations: 7
Document type: Journal article
Source: Journal of Medical Entomology; v. 53, n. 4, p. 843-850, JUL 2016.
Web of Science Citations: 0

The hard tick Amblyomma aureolatum (Pallas) is a vector of the bacterium Rickettsia rickettsii, the etiologic agent of Brazilian spotted fever (BSF) in parts of Brazil. Despite its wide distribution in southeastern South America and its public health importance, there is no information about genetic variation of this species that might help to understand the epidemiology of BSF. Using data from eight microsatellite markers and ticks from six localities, we used a population genetics approach to test the hypothesis that tick populations from areas with the presence of R. rickettsii are genetically different from ticks from areas without R. rickettsii. Contrary to expectations, we found low genetic structure between studied regions. Thus, the presence of R. rickettsii in the specific area is more likely correlated with ecological and the environmental conditions or due to unknown gene coding regions of A. aureolatum genome that would be related to R. rickettsii infection resistance. (AU)

FAPESP's process: 09/52892-7 - Ecology of Brazilian spotted fever in the Metropolitan Region of São Paulo: evaluation of Rickettsia rickettsii infection in wild and domestic animals as well as in the tick vector Amblyomma aureolatum
Grantee:Maria Halina Ogrzewalska
Support type: Scholarships in Brazil - Post-Doctorate