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BACTERIA OF THE GENUS RICKETTSIA IN TICKS (ACARI: IXODIDAE) COLLECTED FROM BIRDS IN COSTA RICA
Autor
Afiliación
Fundação Oswaldo Cruz. Instituto Oswaldo cruz. Laboratório de Hantaviroses e Rickettioses. Rio de Janeiro, RJ, Brasil.
University of Veterinary and Pharmaceutical Sciences Brno. Faculty of Veterinary Hygiene and Ecology. Department of Biology and Wildlife Diseases. Brno, Czech Republic / University of Veterinary and Pharmaceutical Sciences Brno. CEITEC VFU Brno. Brno, Czech Republic.
Academy of Sciences of the Czech Republic. Institute of Vertebrate Biology. Brno, Czech Republic.
University of Veterinary and Pharmaceutical Sciences Brno. Faculty of Veterinary Hygiene and Ecology. Department of Biology and Wildlife Diseases. Brno, Czech Republic.
Servicio Nacional de Salud Animal. Heredia, Costa Rica.
Servicio Nacional de Salud Animal. Heredia, Costa Rica.
Instituto Adolfo Lutz. Centro de Imunologia. Imunoprotemic Lab. São Paulo, SP, Brasil.
Universidade de São Paulo. Faculdade de Medicina Veterinária e Zootecnia. Departamento de Medicina Veterinária Preventiva e Saúde Animal. São Paulo, SP, Brasil.
Universidade de São Paulo. Faculdade de Medicina Veterinária e Zootecnia. Departamento de Medicina Veterinária Preventiva e Saúde Animal. São Paulo, SP, Brasil.
University of Veterinary and Pharmaceutical Sciences Brno. Faculty of Veterinary Hygiene and Ecology. Department of Biology and Wildlife Diseases. Brno, Czech Republic / University of Veterinary and Pharmaceutical Sciences Brno. CEITEC VFU Brno. Brno, Czech Republic.
Academy of Sciences of the Czech Republic. Institute of Vertebrate Biology. Brno, Czech Republic.
University of Veterinary and Pharmaceutical Sciences Brno. Faculty of Veterinary Hygiene and Ecology. Department of Biology and Wildlife Diseases. Brno, Czech Republic.
Servicio Nacional de Salud Animal. Heredia, Costa Rica.
Servicio Nacional de Salud Animal. Heredia, Costa Rica.
Instituto Adolfo Lutz. Centro de Imunologia. Imunoprotemic Lab. São Paulo, SP, Brasil.
Universidade de São Paulo. Faculdade de Medicina Veterinária e Zootecnia. Departamento de Medicina Veterinária Preventiva e Saúde Animal. São Paulo, SP, Brasil.
Universidade de São Paulo. Faculdade de Medicina Veterinária e Zootecnia. Departamento de Medicina Veterinária Preventiva e Saúde Animal. São Paulo, SP, Brasil.
Resumen en ingles
The aim of this study was to document the presence of Rickettsia spp. in ticks parasitizing wild birds
in Costa Rica. Birds were trapped at seven locations in Costa Rica during 2004, 2009, and 2010; then
visually examined for the presence of ticks. Ticks were identified, and part of them was tested individually
for the presence of Rickettsia spp. by polymerase chain reaction (PCR) using primers targeting
fragments of the rickettsial genes gltA and ompA. PCR products were DNA-sequenced and analyzed in
BLAST to determine similarities with previously reported rickettsial agents. A total of 1878 birds were
examined, from which 163 birds (9%) were infested with 388 ticks of the genera Amblyomma and Ixodes.
The following Amblyomma (in decreasing order of abundance) were found in immature stages (larvae and
nymphs): Amblyomma longirostre, Amblyomma calcaratum, Amblyomma coelebs, Amblyomma sabanerae,
Amblyomma varium, Amblyomma maculatum, and Amblyomma ovale. Ixodes ticks were represented by
Ixodes minor and two unclassified species, designated here as Ixodes sp. genotype I, and Ixodes sp. genotype
II. Twelve of 24 tested A. longirostre ticks were found to be infected with ‘Candidatus Rickettsia
amblyommii’, and 2 of 4 A. sabanerae were found to be infected with Rickettsia bellii. Eight of 10 larval
Ixodes minor were infected with an endosymbiont (a novel Rickettsia sp. agent) genetically related to the
Ixodes scapularis endosymbiont. No rickettsial DNA was found in A. calcaratum, A. coelebs, A. maculatum,
A. ovale, A. varium, Ixodes sp. I, and Ixodes sp. II. We report the occurrence of I. minor in Costa Rica for the
first time and a number of new bird host–tick associations. Moreover, ‘Candidatus R. amblyommii’ and R.
bellii were found in A. longirostre and A. sabanerae, respectively, in Costa Rica for the first time.
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