Density estimates of the domestic vector of Chagas disease, Rhodnius prolixus Stal (Hemiptera: Reduviidae), in rural houses in Venezuela

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We report the use of the timed manual method, routinely employed as an indicator of the relative abundance of domestic triatomine bugs, to estimate their absolute density in houses. A team of six people collected Rhodnius prolixus Stal bugs from the walls and roofs of 14 typical palm-leaf rural hous...

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Autores principales: Rabinovich, J.E., Gurtler, R.E., Leal, J.A., Feliciangeli, D.
Formato: JOUR
Materias:
article
building material
chagas disease
disease carrier
hemiptera
home
nonhuman
regression analysis
rural area
trypanosoma cruzi
venezuela
Animal
Housing
Human
Population Density
Regression Analysis
Rhodnius
Rural Health
Venezuela
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00429686_v73_n3_p347_Rabinovich
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_00429686_v73_n3_p347_Rabinovich2023-10-03T14:51:28Z Density estimates of the domestic vector of Chagas disease, Rhodnius prolixus Stal (Hemiptera: Reduviidae), in rural houses in Venezuela Rabinovich, J.E. Gurtler, R.E. Leal, J.A. Feliciangeli, D. article building material chagas disease disease carrier hemiptera home nonhuman regression analysis rural area trypanosoma cruzi venezuela Animal Housing Human Population Density Regression Analysis Rhodnius Rural Health Venezuela We report the use of the timed manual method, routinely employed as an indicator of the relative abundance of domestic triatomine bugs, to estimate their absolute density in houses. A team of six people collected Rhodnius prolixus Stal bugs from the walls and roofs of 14 typical palm-leaf rural houses located in Cojedes, Venezuela, spending 40 minutes searching in each house. One day after these manual collections, all the houses were demolished and the number of triatomine bugs were identified by instar and counted. Linear regression analyses of the number of R. prolixus collected over 4 manhours and the census counts obtained by house demolition indicated that the fit of the data by instar (stage II - adult) and place of capture (roof versus palm walls versus mud walls) was satisfactory. The slopes of the regressions were interpreted as a measure of 'catchability' (probability of capture). Catchability increased with developmental stage (ranging from 11.2% in stage II to 38.7% in adults), probably reflecting the increasing size and visibility of bugs as they evolved. The catchability on palm walls was higher than that for roofs or mud walls, increasing from 1.3% and 3.0% in stage II to 13.4% and 14.0% in adults, respectively. We report, also, regression equations for converting field estimates of timed manual collections of R. prolixus into absolute density estimates. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00429686_v73_n3_p347_Rabinovich
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic article
building material
chagas disease
disease carrier
hemiptera
home
nonhuman
regression analysis
rural area
trypanosoma cruzi
venezuela
Animal
Housing
Human
Population Density
Regression Analysis
Rhodnius
Rural Health
Venezuela
spellingShingle article
building material
chagas disease
disease carrier
hemiptera
home
nonhuman
regression analysis
rural area
trypanosoma cruzi
venezuela
Animal
Housing
Human
Population Density
Regression Analysis
Rhodnius
Rural Health
Venezuela
Rabinovich, J.E.
Gurtler, R.E.
Leal, J.A.
Feliciangeli, D.
Density estimates of the domestic vector of Chagas disease, Rhodnius prolixus Stal (Hemiptera: Reduviidae), in rural houses in Venezuela
topic_facet article
building material
chagas disease
disease carrier
hemiptera
home
nonhuman
regression analysis
rural area
trypanosoma cruzi
venezuela
Animal
Housing
Human
Population Density
Regression Analysis
Rhodnius
Rural Health
Venezuela
description We report the use of the timed manual method, routinely employed as an indicator of the relative abundance of domestic triatomine bugs, to estimate their absolute density in houses. A team of six people collected Rhodnius prolixus Stal bugs from the walls and roofs of 14 typical palm-leaf rural houses located in Cojedes, Venezuela, spending 40 minutes searching in each house. One day after these manual collections, all the houses were demolished and the number of triatomine bugs were identified by instar and counted. Linear regression analyses of the number of R. prolixus collected over 4 manhours and the census counts obtained by house demolition indicated that the fit of the data by instar (stage II - adult) and place of capture (roof versus palm walls versus mud walls) was satisfactory. The slopes of the regressions were interpreted as a measure of 'catchability' (probability of capture). Catchability increased with developmental stage (ranging from 11.2% in stage II to 38.7% in adults), probably reflecting the increasing size and visibility of bugs as they evolved. The catchability on palm walls was higher than that for roofs or mud walls, increasing from 1.3% and 3.0% in stage II to 13.4% and 14.0% in adults, respectively. We report, also, regression equations for converting field estimates of timed manual collections of R. prolixus into absolute density estimates.
format JOUR
author Rabinovich, J.E.
Gurtler, R.E.
Leal, J.A.
Feliciangeli, D.
author_facet Rabinovich, J.E.
Gurtler, R.E.
Leal, J.A.
Feliciangeli, D.
author_sort Rabinovich, J.E.
title Density estimates of the domestic vector of Chagas disease, Rhodnius prolixus Stal (Hemiptera: Reduviidae), in rural houses in Venezuela
title_short Density estimates of the domestic vector of Chagas disease, Rhodnius prolixus Stal (Hemiptera: Reduviidae), in rural houses in Venezuela
title_full Density estimates of the domestic vector of Chagas disease, Rhodnius prolixus Stal (Hemiptera: Reduviidae), in rural houses in Venezuela
title_fullStr Density estimates of the domestic vector of Chagas disease, Rhodnius prolixus Stal (Hemiptera: Reduviidae), in rural houses in Venezuela
title_full_unstemmed Density estimates of the domestic vector of Chagas disease, Rhodnius prolixus Stal (Hemiptera: Reduviidae), in rural houses in Venezuela
title_sort density estimates of the domestic vector of chagas disease, rhodnius prolixus stal (hemiptera: reduviidae), in rural houses in venezuela
url http://hdl.handle.net/20.500.12110/paper_00429686_v73_n3_p347_Rabinovich
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