Tesis
Infecção por riquétsias em carrapatos de aves da região do Cerrado e Pantanal Mato-grossense, Centro-Oeste, Brasil
Fecha
2016-05-30Registro en:
RAMOS, Dirceu Guilherme de Souza. Infecção por riquétsias em carrapatos de aves da região do Cerrado e Pantanal Mato-grossense, Centro-Oeste, Brasil. 2016. 79 f. Tese (Doutorado em Ciências Veterinárias) - Universidade Federal de Mato Grosso, Faculdade de Agronomia, Medicina Veterinária e Zootecnia, Cuiabá, 2016.
Autor
Pacheco, Richard de Campos
Aguiar, Daniel Moura de
http://lattes.cnpq.br/8668503323187464
http://lattes.cnpq.br/5213594247690553
Aguiar, Daniel Moura de
603.780.181-91
http://lattes.cnpq.br/8668503323187464
Nakazato, Luciano
638.389.071-91
http://lattes.cnpq.br/3898850578198054
791.476.071-49
603.780.181-91
Sinkoc, Afonso Lodovico
608.901.859-72
http://lattes.cnpq.br/4097326874364333
Santos, Adriano Pinter dos
251.773.428-32
http://lattes.cnpq.br/8887336916442663
Horta, Mauricio Claudio
195.204.298-40
http://lattes.cnpq.br/5308738911993381
Institución
Resumen
The involvement of different species of ticks and wild animals, such as birds, play an
important role in the epidemiology of tick-borne diseases. Birds may serve as
reservoirs for some tick-borne diseases, and may carry and spread hematophagous
ectoparasites mechanically. This study aimed to show the diversity of ticks on birds
and molecular detection of rickettsial infection in ticks from Pantanal and Cerrado,
two similar Brazilian biomes characterized by hydrological seasons. During two
years, August 2012 to May 2014, ticks were collected on birds and from the
environment in total of 14 visits for collecting samples, distributed in all hydrological
seasons. A total of 674 birds were captured representing 113 species from 26
families. In total, 71 birds were parasitized (10.5%), and 155 ticks of the following 7
tick species (in decreasing order of prevalence) were identified: Amblyomma
longirostre (Koch), Amblyomma nodosum Neumann, Amblyomma cajennense
Fabricius, Amblyomma calcaratum Neumann, Ornithodoros mimon Kohls, Clifford &
Jones, Amblyomma ovale Koch, and Amblyomma triste Koch. Among free-living ticks
collected in the environment, Amblyomma cajennense sensu lato (s.l.) was the most
common. Further, herein we described, for the first time, occurrence of Ornithodoros
mimon on birds and of Amblyomma triste on Passeriformes in Brazil. Molecular
analyses revealed that six A. longirostre ticks were infected by Candidatus ‘Rickettsia
amblyommii’, whereas one A. nodosum was infected by a Rickettsia parkeri-like
agent, previously reported as Rickettsia sp. strain NOD. Spotted fever group (SFG)
agents were, for the first time, reported in ticks from birds captured in Pantanal
biome, and the potential involvement of these agents as human pathogens should be
considered in further studies.