The sylvatic transmission cycle of Trypanosoma cruzi in a rural area in the humid Chaco of Argentina

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Little is known about the sylvatic transmission cycle of Trypanosoma cruzi in the Gran Chaco ecoregion. We conducted surveys to identify the main sylvatic hosts of T. cruzi, parasite discrete typing units and vector species involved in Pampa del Indio, a rural area in the humid Argentinean Chaco. A...

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Detalles Bibliográficos
Autor principal: Alvarado-Otegui, J.A
Otros Autores: Ceballos, L.A, Orozco, M.M, Enriquez, G.F, Cardinal, M.V, Cura, C., Schijman, A.G, Kitron, U., Gürtler, Ricardo Esteban
Formato: Capítulo de libro
Lenguaje:Inglés
Publicado: 2012
Materias:
ARGENTINA
GRAN CHACO
Acceso en línea:Registro en Scopus
DOI
Handle
Registro en la Biblioteca Digital
Aporte de:Registro referencial: Solicitar el recurso aquí
Biblioteca Central Dr. Luis F. Leloir (FCEN) de Universidad de Buenos Aires
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245 1 4 |a The sylvatic transmission cycle of Trypanosoma cruzi in a rural area in the humid Chaco of Argentina 
260 |c 2012 
270 1 0 |m Gürtler, R.E.; Laboratorio de Eco-Epidemiología, Departamento de Ecología, Genética y Evolución, Ciudad Universitaria, 1428 Buenos Aires, Argentina; email: gurtler@ege.fcen.uba.ar 
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506 |2 openaire  |e Política editorial 
520 3 |a Little is known about the sylvatic transmission cycle of Trypanosoma cruzi in the Gran Chaco ecoregion. We conducted surveys to identify the main sylvatic hosts of T. cruzi, parasite discrete typing units and vector species involved in Pampa del Indio, a rural area in the humid Argentinean Chaco. A total of 44 mammals from 14 species were captured and examined for infection by xenodiagnosis and polymerase chain reaction amplification of the hyper-variable region of kinetoplast DNA minicircles of T. cruzi (kDNA-PCR). Ten (22.7%) mammals were positive by xenodiagnosis or kDNA-PCR. Four of 11 (36%) Didelphis albiventris (white-eared opossums) and six of nine (67%) Dasypus novemcinctus (nine-banded armadillos) were positive by xenodiagnosis and or kDNA-PCR. Rodents, other armadillo species, felids, crab-eating raccoons, hares and rabbits were not infected. Positive animals were highly infectious to the bugs that fed upon them as determined by xenodiagnosis. All positive opossums were infected with T. cruzi I and all positive nine-banded armadillos with T. cruzi III. Extensive searches in sylvatic habitats using 718 Noireau trap-nights only yielded Triatoma sordida whereas no bug was collected in 26 light-trap nights. Four armadillos or opossums fitted with a spool-and-line device were successfully tracked to their refuges; only one Panstrongylus geniculatus was found in an armadillo burrow. No sylvatic triatomine was infected with T. cruzi by microscopical examination or kDNA-PCR. Our results indicate that two independent sylvatic transmission cycles of T. cruzi occur in the humid Chaco. The putative vectors of both cycles need to be identified conclusively. © 2012 Elsevier B.V.  |l eng 
536 |a Detalles de la financiación: Universidad de Buenos Aires 
536 |a Detalles de la financiación: Fogarty International Center 
536 |a Detalles de la financiación: National Institute of Environmental Health Sciences 
536 |a Detalles de la financiación: UNICEF/PNUD/WB/WHO 
536 |a Detalles de la financiación: R01 TW05836 
536 |a Detalles de la financiación: We are grateful to Leonardo Lanati, Marta Lauricella, Marina Leporace, Lucía Maffey, Margarita Bisio, Juan M. Burgos, Pablo Teta, Emiliano Muschetto, Luis Leyes, Joaquín Maidana, Pollo Lescano, Blanco bros. and Raúl Stariolo for field and laboratory assistance. Reference strains of TcI-VI were kindly provided by Patricio Diosque, Miguel A. Basombrío and Michel Tibayrenc. This study was supported by awards from the International Development Research Center (EcoHealth Program) , Tropical Disease Research (UNICEF/PNUD/WB/WHO), University of Buenos Aires, and National Institutes of Health/National Science Foundation Ecology of Infectious Disease program award R01 TW05836 funded by the Fogarty International Center and the National Institute of Environmental Health Sciences to UK, REG, and Joel Cohen. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. REG, MVC and AGS are members of CONICET Researcher's Career. 
593 |a Laboratorio de Eco-Epidemiología, Departamento de Ecología, Genética y Evolución, Universidad de Buenos Aires, Buenos Aires, Argentina 
593 |a Grupo de Biología Molecular de la Enfermedad de Chagas, Inst. de Invest. en Ingenieria Genetica y Biologia Molecular Dr Hector Torres (INGEBI-CONICET), Buenos Aires, Argentina 
593 |a Department of Environmental Studies, Emory University, Atlanta, United States 
651 4 |a ARGENTINA 
651 4 |a ARGENTINA 
651 4 |a GRAN CHACO 
690 1 0 |a DASYPUS NOVEMCINCTUS 
690 1 0 |a DIDELPHIS ALBIVENTRIS 
690 1 0 |a DISCRETE TYPING UNIT 
690 1 0 |a MOLECULAR EPIDEMIOLOGY 
690 1 0 |a RESERVOIR 
690 1 0 |a TRYPANOSOMA CRUZI 
690 1 0 |a VECTOR 
690 1 0 |a DISEASE PREVALENCE 
690 1 0 |a DISEASE VECTOR 
690 1 0 |a DNA 
690 1 0 |a EPIDEMIOLOGY 
690 1 0 |a MAMMAL 
690 1 0 |a PARASITIC DISEASE 
690 1 0 |a POLYMERASE CHAIN REACTION 
690 1 0 |a RURAL AREA 
690 1 0 |a ANIMAL EXPERIMENT 
690 1 0 |a ARTICLE 
690 1 0 |a CHAGAS DISEASE 
690 1 0 |a CONTROLLED STUDY 
690 1 0 |a HABITAT 
690 1 0 |a MAMMAL 
690 1 0 |a NONHUMAN 
690 1 0 |a NUCLEOTIDE SEQUENCE 
690 1 0 |a PANSTRONGYLUS GENICULATUS 
690 1 0 |a PARASITE TRANSMISSION 
690 1 0 |a POLYMERASE CHAIN REACTION 
690 1 0 |a RURAL AREA 
690 1 0 |a SYLVATIC TRANSMISSION CYCLE 
690 1 0 |a TRIATOMA SORBIDA 
690 1 0 |a TRIATOMINAE 
690 1 0 |a TRYPANOSOMA CRUZI 
690 1 0 |a XENODIAGNOSIS 
690 1 0 |a ANIMALS 
690 1 0 |a ANIMALS, WILD 
690 1 0 |a CHAGAS DISEASE 
690 1 0 |a DISEASE RESERVOIRS 
690 1 0 |a DISEASE VECTORS 
690 1 0 |a DNA, KINETOPLAST 
690 1 0 |a DNA, PROTOZOAN 
690 1 0 |a HUMANS 
690 1 0 |a HUMIDITY 
690 1 0 |a LIFE CYCLE STAGES 
690 1 0 |a MOLECULAR SEQUENCE DATA 
690 1 0 |a POLYMERASE CHAIN REACTION 
690 1 0 |a RURAL POPULATION 
690 1 0 |a SEQUENCE ANALYSIS, DNA 
690 1 0 |a TRYPANOSOMA CRUZI 
690 1 0 |a ANIMALIA 
690 1 0 |a ARMADILLO 
690 1 0 |a DASYPODIDAE 
690 1 0 |a DASYPUS NOVEMCINCTUS 
690 1 0 |a DIDELPHIDAE 
690 1 0 |a DIDELPHIS ALBIVENTRIS 
690 1 0 |a FELIDAE 
690 1 0 |a LEPUS 
690 1 0 |a MAMMALIA 
690 1 0 |a ORYCTOLAGUS CUNICULUS 
690 1 0 |a PANSTRONGYLUS GENICULATUS 
690 1 0 |a PROCYON CANCRIVORUS 
690 1 0 |a RODENTIA 
690 1 0 |a TRIATOMA SORDIDA 
690 1 0 |a TRYPANOSOMA CRUZI 
700 1 |a Ceballos, L.A. 
700 1 |a Orozco, M.M. 
700 1 |a Enriquez, G.F. 
700 1 |a Cardinal, M.V. 
700 1 |a Cura, C. 
700 1 |a Schijman, A.G. 
700 1 |a Kitron, U. 
700 1 |a Gürtler, Ricardo Esteban 
773 0 |d 2012  |g v. 124  |h pp. 79-86  |k n. 1  |p Acta Trop.  |x 0001706X  |w (AR-BaUEN)CENRE-3547  |t Acta Tropica 
856 4 1 |u https://www.scopus.com/inward/record.uri?eid=2-s2.0-84864766656&doi=10.1016%2fj.actatropica.2012.06.010&partnerID=40&md5=ca7d55d57bad484565a2a3a13f194909  |x registro  |y Registro en Scopus 
856 4 0 |u https://doi.org/10.1016/j.actatropica.2012.06.010  |x doi  |y DOI 
856 4 0 |u https://hdl.handle.net/20.500.12110/paper_0001706X_v124_n1_p79_AlvaradoOtegui  |x handle  |y Handle 
856 4 0 |u https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0001706X_v124_n1_p79_AlvaradoOtegui  |x registro  |y Registro en la Biblioteca Digital 
961 |a paper_0001706X_v124_n1_p79_AlvaradoOtegui  |b paper  |c PE 
962 |a info:eu-repo/semantics/article  |a info:ar-repo/semantics/artículo  |b info:eu-repo/semantics/publishedVersion 
963 |a VARI 

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