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Registro Completo |
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Biblioteca(s): |
Embrapa Gado de Corte. |
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Data corrente: |
18/12/2018 |
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Data da última atualização: |
18/12/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
AGUIRREA, A. A. R. e; GARCIA, M. V.; COSTA, I. N. da; CSORDAS, B. G.; RODRIGUES, V. da S.; MEDEIROS, J. F.; ANDREOTTI, R. |
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Afiliação: |
Plataforma de Criação e Experimentação Animal/Fiocruz Rondônia/Oswaldo Cruz Foundation; Marcos Valério Garcia, Laboratórios de Biologia Molecular e do Carrapato/Brazilian Agricultural Research Corporation; Ivaneide Nunes da Costa, Laboratório de Entomologia Médica/Fiocruz Rondônia/Oswaldo Cruz Foundation; Bárbara Guimarães Csordasc, Laboratórios de Biologia Molecular e do Carrapato/Brazilian Agricultural Research Corporation; Vinícius da Silva Rodrigues, Laboratórios de Biologia Molecular e do Carrapato/Brazilian Agricultural Research Corporation; Jansen Fernandes Medeiros, Laboratório de Entomologia Médica/Fiocruz Rondônia/Oswaldo Cruz Foundation; RENATO ANDREOTTI E SILVA, CNPGC. |
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Título: |
New records of tick-associated spotted fever group Rickettsia in an Amazon-Savannah ecotone, Brazil. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
Ticks and Tick-Borne Disease, v. 9, n. 4, p. 1038-1044, May 2018 |
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Idioma: |
Inglês |
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Conteúdo: |
Human rickettsiosis has been recorded in the Amazon Biome. However, the epidemiological cycle of causative rickettsiae has not been fully accounted for in the Amazon region. This study investigates the presence of spotted fever group (SFG) Rickettsia spp. in free-living unfed ticks of the Amblyomma genus. The study was conducted in seven municipalities in Rondonia State, Brazil, where the main biomes are Amazon forest, Brazilian Savannah and their ecotones (areas of ecological tension between open ombrophilous forest and savannah). The following tick species were collected: Amblyomma cajennense (sensu lato) s.l., A. cajennense (sensu stricto) s.s., A. coelebs, A. naponense, A. oblongoguttatum, A. romitii, A. scalpturatum and A. sculptum. A total of 167 adults, 248 nymphs and 1004 larvae were subjected to DNA extraction and polymerase chain reaction (PCR) to determine the presence of SFG Rickettsia spp. PCR-positive samples included: one A. cajennense s.s. female and one A. cajennense s.l. male from a rural area in Vilhena Municipality; 10 nymphs and a sample of larvae of A. cajennense s.l. from a periurban area in Cacoal Municipality; and an A. oblongoguttatum adult male from a rural area of Pimenta Bueno Municipality. All sequences obtained exhibited 100% identity with Rickettsia amblyommatis sequences. This is the first confirmation of SFG Rickettsia in an A. oblongoguttatum tick. Furthermore, this is the first record of SFG Rickettsia in the municipalities targeted by this study. These results warn that SFG Rickettsia circulation poses a threat in Rondonia State (among Amazon-Savannah ecotones), and that this threat is increased by the fact that SFG Rickettsia infect a human-biting tick species hitherto unconfirmed as a vector. MenosHuman rickettsiosis has been recorded in the Amazon Biome. However, the epidemiological cycle of causative rickettsiae has not been fully accounted for in the Amazon region. This study investigates the presence of spotted fever group (SFG) Rickettsia spp. in free-living unfed ticks of the Amblyomma genus. The study was conducted in seven municipalities in Rondonia State, Brazil, where the main biomes are Amazon forest, Brazilian Savannah and their ecotones (areas of ecological tension between open ombrophilous forest and savannah). The following tick species were collected: Amblyomma cajennense (sensu lato) s.l., A. cajennense (sensu stricto) s.s., A. coelebs, A. naponense, A. oblongoguttatum, A. romitii, A. scalpturatum and A. sculptum. A total of 167 adults, 248 nymphs and 1004 larvae were subjected to DNA extraction and polymerase chain reaction (PCR) to determine the presence of SFG Rickettsia spp. PCR-positive samples included: one A. cajennense s.s. female and one A. cajennense s.l. male from a rural area in Vilhena Municipality; 10 nymphs and a sample of larvae of A. cajennense s.l. from a periurban area in Cacoal Municipality; and an A. oblongoguttatum adult male from a rural area of Pimenta Bueno Municipality. All sequences obtained exhibited 100% identity with Rickettsia amblyommatis sequences. This is the first confirmation of SFG Rickettsia in an A. oblongoguttatum tick. Furthermore, this is the first record of SFG Rickettsia in the municipalities targeted by thi... Mostrar Tudo |
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Palavras-Chave: |
Amazon-Savanna ecotone; Amblyomma oblongoguttatum; Brazilian spotted fever; Rickettsia amblyommatis. |
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Thesaurus Nal: |
Ecotones. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/188744/1/New-records-of-tick-associated-spotted-fever-group.pdf
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Marc: |
LEADER 02555naa a2200253 a 4500
001 2101870
005 2018-12-18
008 2018 bl uuuu u00u1 u #d
100 1 $aAGUIRREA, A. A. R. e
245 $aNew records of tick-associated spotted fever group Rickettsia in an Amazon-Savannah ecotone, Brazil.$h[electronic resource]
260 $c2018
520 $aHuman rickettsiosis has been recorded in the Amazon Biome. However, the epidemiological cycle of causative rickettsiae has not been fully accounted for in the Amazon region. This study investigates the presence of spotted fever group (SFG) Rickettsia spp. in free-living unfed ticks of the Amblyomma genus. The study was conducted in seven municipalities in Rondonia State, Brazil, where the main biomes are Amazon forest, Brazilian Savannah and their ecotones (areas of ecological tension between open ombrophilous forest and savannah). The following tick species were collected: Amblyomma cajennense (sensu lato) s.l., A. cajennense (sensu stricto) s.s., A. coelebs, A. naponense, A. oblongoguttatum, A. romitii, A. scalpturatum and A. sculptum. A total of 167 adults, 248 nymphs and 1004 larvae were subjected to DNA extraction and polymerase chain reaction (PCR) to determine the presence of SFG Rickettsia spp. PCR-positive samples included: one A. cajennense s.s. female and one A. cajennense s.l. male from a rural area in Vilhena Municipality; 10 nymphs and a sample of larvae of A. cajennense s.l. from a periurban area in Cacoal Municipality; and an A. oblongoguttatum adult male from a rural area of Pimenta Bueno Municipality. All sequences obtained exhibited 100% identity with Rickettsia amblyommatis sequences. This is the first confirmation of SFG Rickettsia in an A. oblongoguttatum tick. Furthermore, this is the first record of SFG Rickettsia in the municipalities targeted by this study. These results warn that SFG Rickettsia circulation poses a threat in Rondonia State (among Amazon-Savannah ecotones), and that this threat is increased by the fact that SFG Rickettsia infect a human-biting tick species hitherto unconfirmed as a vector.
650 $aEcotones
653 $aAmazon-Savanna ecotone
653 $aAmblyomma oblongoguttatum
653 $aBrazilian spotted fever
653 $aRickettsia amblyommatis
700 1 $aGARCIA, M. V.
700 1 $aCOSTA, I. N. da
700 1 $aCSORDAS, B. G.
700 1 $aRODRIGUES, V. da S.
700 1 $aMEDEIROS, J. F.
700 1 $aANDREOTTI, R.
773 $tTicks and Tick-Borne Disease$gv. 9, n. 4, p. 1038-1044, May 2018
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Embrapa Gado de Corte (CNPGC) |
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| 1. |  | AGUIRREA, A. A. R. e; GARCIA, M. V.; COSTA, I. N. da; CSORDAS, B. G.; RODRIGUES, V. da S.; MEDEIROS, J. F.; ANDREOTTI, R. New records of tick-associated spotted fever group Rickettsia in an Amazon-Savannah ecotone, Brazil. Ticks and Tick-Borne Disease, v. 9, n. 4, p. 1038-1044, May 2018| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
| Biblioteca(s): Embrapa Gado de Corte. |
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