Habitat-specific occupancy and a metapopulation model of triatoma sordida (Hemiptera: Reduviidae), a secondary vector of chagas disease, in northeastern Argentina

Triatoma sordida Stål (Hemiptera: Reduviidae), a secondary vector of Trypanosoma cruzi Chagas (Kinetoplastida: Trypanosomatidae), occasionally colonizes human sleeping quarters in Paraguay, Bolivia, and Brazil, whereas only sylvatic and peridomestic populations are found in Argentina. We carried out...

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Autor principal: Lucía, I.R.-P
Otros Autores: Gaspe, M.S, Enriquez, G.F, Gürtler, Ricardo Esteban
Formato: Capítulo de libro
Lenguaje:Inglés
Publicado: Oxford University Press 2018
Acceso en línea:Registro en Scopus
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100 1 |a Lucía, I.R.-P. 
245 1 0 |a Habitat-specific occupancy and a metapopulation model of triatoma sordida (Hemiptera: Reduviidae), a secondary vector of chagas disease, in northeastern Argentina 
260 |b Oxford University Press  |c 2018 
270 1 0 |m Gürtler, R.E.; Universidad de Buenos Aires, Departamento de Ecología, Genética y Evolución, Facultad de Ciencias Exactas y Naturales, Ciudad UniversitariaArgentina; email: gurtler@ege.fcen.uba.ar 
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506 |2 openaire  |e Política editorial 
520 3 |a Triatoma sordida Stål (Hemiptera: Reduviidae), a secondary vector of Trypanosoma cruzi Chagas (Kinetoplastida: Trypanosomatidae), occasionally colonizes human sleeping quarters in Paraguay, Bolivia, and Brazil, whereas only sylvatic and peridomestic populations are found in Argentina. We carried out a cross-sectional survey of house infestation in a well-defined rural area of northeastern Argentina to identify the key habitats of T. sordida; describe its spatial distribution in an apparently undisturbed setting under no recent insecticide treatment and use metapopulation theory to investigate these spatially structured populations. Timed-manual searches in 2,177 georeferenced sites from 368 houses yielded T. sordida in 78 sites (house infestation prevalence, 19.9%). Most triatomines occurred in chicken nests, chicken coops, and trees where chickens roosted (prime habitats). Goat or sheep corrals and pig corrals had a lower fraction of occupied sites (occupancies) and abundance. Both occupancy and catch increased with increasing refuge availability according to multimodel inference with model averaging.The majority of suitable habitats were unoccupied despite their proximity to occupied sites.The site-specific occurrence of T. sordida and Triatoma infestans Klug (Hemiptera: Reduviidae) was positively and homogeneously associated over ecotopes, showing no evidence of interspecific interference. An incidence function metapopulation model (including intersite distances and vector carrying capacity) predicted a fivefold greater occupancy relative to the observed pattern, suggesting the latter represented a transient state. T. sordida failed to colonize human sleeping quarters, thrived in peridomestic habitats occupied by chickens, and had a limited occupancy likely related to a poor colonizing ability and the relative instability of its prime habitats. © The Author(s) 2017.  |l eng 
536 |a Detalles de la financiación: Consejo Nacional de Investigaciones Científicas y Técnicas 
536 |a Detalles de la financiación: Facultad de Ciencias Físicas y Matemáticas 
536 |a Detalles de la financiación: Universidad de Buenos Aires 
536 |a Detalles de la financiación: Fundación Bunge y Born 
536 |a Detalles de la financiación: Universidad de Buenos Aires, 20020100100944 
536 |a Detalles de la financiación: Agencia Nacional de Promoción Científica y Tecnológica, PICT 2011–2072 
536 |a Detalles de la financiación: UNICEF/PNUD/WB/ WHO A70596 
536 |a Detalles de la financiación: 1Universidad de Buenos Aires, Departamento de Ecología, Genética y Evolución, Facultad de Ciencias Exactas y Naturales, Ciudad Universitaria, C1428EHA, Buenos Aires, Argentina, 2Universidad de Buenos Aires, Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Ecología, Genética y Evolución de Buenos Aires (IEGEBA), Ciudad Universitaria, C1428EHA, Buenos Aires, Argentina, and 3Corresponding author, e-mail: gurtler@ege.fcen.uba.ar 
536 |a Detalles de la financiación: We thank Jorge Nasir (deceased) and Cynthia Spillmann, from the Chaco and National Chagas disease control programs, for continuing field support, especially to Esteban Ramírez, Claudio Baudín, Ermelindo Olivera, Mario Obregón, Fabian Lovatto, Nicasio Vargas, and Remigio Vargas; Juan M.  Gurevitz, Paula Ordóñez-Krasnowski, Julián Alvarado-Otegui for contribution to fieldwork; Fundación Mundo Sano for hospitality at the study area, and the local communities. Parts of this longitudinal study were supported by awards from Tropical Disease Research (UNICEF/PNUD/WB/ WHO A70596), Agencia Nacional de Promoción Científica y Tecnológica (PICT 2011–2072 and PICTO–Glaxo 2011–0062), University of Buenos Aires (20020100100944), and Fundación Bunge & Born. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. 
593 |a Universidad de Buenos Aires, Departamento de Ecología, Genética y Evolución, Facultad de Ciencias Exactas y Naturales, Ciudad Universitaria, Buenos Aires, C1428EHA, Argentina 
593 |a Universidad de Buenos Aires, Consejo Nacional de Investigaciones Científicas y Técnicas, Instituto de Ecología, Genética y Evolución de Buenos Aires (IEGEBA), Ciudad Universitaria, Buenos Aires, C1428EHA, Argentina 
690 1 0 |a CHAGAS DISEASE 
690 1 0 |a ECOLOGY 
690 1 0 |a POPULATION DYNAMICS 
690 1 0 |a VECTOR ECOLOGY 
700 1 |a Gaspe, M.S. 
700 1 |a Enriquez, G.F. 
700 1 |a Gürtler, Ricardo Esteban 
773 0 |d Oxford University Press, 2018  |g v. 55  |h pp. 370-381  |k n. 2  |p J. Med. Entomol.  |x 00222585  |t Journal of Medical Entomology 
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856 4 0 |u https://doi.org/10.1093/jme/tjx227  |x doi  |y DOI 
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