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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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Registro original: |
Embrapa Gado de Corte (CNPGC) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Meio Ambiente. Para informações adicionais entre em contato com cnpma.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Meio Ambiente. |
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Data corrente: |
27/02/2014 |
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Data da última atualização: |
30/10/2019 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
CABRAL, O. M. R.; ROCHA, H. R. da; GASH, J. H.; LIGO, M. A. V.; RAMOS, N. P.; PACKER, A. P.; BATISTA, E. R. |
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Afiliação: |
OSVALDO MACHADO RODRIGUES CABRAL, CNPMA; HUMBERTO RIBEIRO DA ROCHA, IAG-USP; JOHN H GASH, Centre for Ecology and Hydrology; MARCOS ANTONIO VIEIRA LIGO, CNPMA; NILZA PATRICIA RAMOS, CNPMA; ANA PAULA CONTADOR PACKER, CNPMA; EUNICE REIS BATISTA, CNPMA. |
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Título: |
Fluxes of CO2 above a sugarcane plantation in Brazil. |
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Ano de publicação: |
2013 |
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Fonte/Imprenta: |
Agricultural and Forest Meteorology, Amsterdam, v. 182-183, p. 54-66, 2013. |
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Idioma: |
Inglês |
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Conteúdo: |
Fluxes of CO2 were measured above a sugarcane plantation using the eddy-covariance method covering two growth cycles, representing the second and third re-growth (ratoons) harvested with stubble burning. The total net ecosystem exchange (NEE) in the first cycle (second ratoon, 393 days long) was ?1964 ± 44 g C m?2; the gross ecosystem productivity (GEP) was 3612 ± 46 g C m?2 and the ecosystem respiration (RE) was 1648 ± 14 g C m?2. The NEE and GEP totals in the second cycle (third ratoon, 374 days long) decreased 51% and 25%, respectively and RE increased 7%. Accounting for the carbon emitted during biomass burning and the removal of stalks at harvest, net ecosystem carbon balance (NECB) totals were 102 ± 130 g C m?2 and 403 ± 84 g C m?2 in each cycle respectively. Thus the sugarcane agrosystem was approximately carbon neutral in the second ratoon. Yield in stalks fresh weight (SFW) attained the regional average (8.3 kg SFW m?2). Although it was a carbon source to the atmosphere, observed productivity (6.2 kg SFW m?2) of the third ratoon was 19% lower than the regional average due to the lower water availability observed during the initial 120 days of re-growth. However, the overall water use efficiency (WUE) achieved in the first cycle (4.3 g C kg?1 H2O) decreased only 5% in the second cycle. |
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Palavras-Chave: |
CO2 fluxes; Respiration; Soil water deficits. |
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Thesaurus NAL: |
biomass; eddy covariance; sugarcane. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 02051naa a2200265 a 4500
001 1981472
005 2019-10-30
008 2013 bl uuuu u00u1 u #d
100 1 $aCABRAL, O. M. R.
245 $aFluxes of CO2 above a sugarcane plantation in Brazil.$h[electronic resource]
260 $c2013
520 $aFluxes of CO2 were measured above a sugarcane plantation using the eddy-covariance method covering two growth cycles, representing the second and third re-growth (ratoons) harvested with stubble burning. The total net ecosystem exchange (NEE) in the first cycle (second ratoon, 393 days long) was ?1964 ± 44 g C m?2; the gross ecosystem productivity (GEP) was 3612 ± 46 g C m?2 and the ecosystem respiration (RE) was 1648 ± 14 g C m?2. The NEE and GEP totals in the second cycle (third ratoon, 374 days long) decreased 51% and 25%, respectively and RE increased 7%. Accounting for the carbon emitted during biomass burning and the removal of stalks at harvest, net ecosystem carbon balance (NECB) totals were 102 ± 130 g C m?2 and 403 ± 84 g C m?2 in each cycle respectively. Thus the sugarcane agrosystem was approximately carbon neutral in the second ratoon. Yield in stalks fresh weight (SFW) attained the regional average (8.3 kg SFW m?2). Although it was a carbon source to the atmosphere, observed productivity (6.2 kg SFW m?2) of the third ratoon was 19% lower than the regional average due to the lower water availability observed during the initial 120 days of re-growth. However, the overall water use efficiency (WUE) achieved in the first cycle (4.3 g C kg?1 H2O) decreased only 5% in the second cycle.
650 $abiomass
650 $aeddy covariance
650 $asugarcane
653 $aCO2 fluxes
653 $aRespiration
653 $aSoil water deficits
700 1 $aROCHA, H. R. da
700 1 $aGASH, J. H.
700 1 $aLIGO, M. A. V.
700 1 $aRAMOS, N. P.
700 1 $aPACKER, A. P.
700 1 $aBATISTA, E. R.
773 $tAgricultural and Forest Meteorology, Amsterdam$gv. 182-183, p. 54-66, 2013.
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