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

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Autor principal: Rabinovich, J.E
Otros Autores: Gürtler, Ricardo Esteban, Leal, J.A, Feliciangeli, D.
Formato: Capítulo de libro
Lenguaje:Inglés
Publicado: 1995
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Acceso en línea:Registro en Scopus
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100 1 |a Rabinovich, J.E. 
245 1 0 |a Density estimates of the domestic vector of Chagas disease, Rhodnius prolixus Stal (Hemiptera: Reduviidae), in rural houses in Venezuela 
260 |c 1995 
270 1 0 |m Rabinovich, J.E.Arenales 3844, 1428 Buenos Aires, Argentina 
506 |2 openaire  |e Política editorial 
520 3 |a 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.  |l eng 
593 |a Arenales 3844, 1428 Buenos Aires, Argentina 
651 4 |a VENEZUELA 
651 4 |a VENEZUELA 
690 1 0 |a ARTICLE 
690 1 0 |a BUILDING MATERIAL 
690 1 0 |a CHAGAS DISEASE 
690 1 0 |a DISEASE CARRIER 
690 1 0 |a HEMIPTERA 
690 1 0 |a HOME 
690 1 0 |a NONHUMAN 
690 1 0 |a REGRESSION ANALYSIS 
690 1 0 |a RURAL AREA 
690 1 0 |a TRYPANOSOMA CRUZI 
690 1 0 |a ANIMAL 
690 1 0 |a HOUSING 
690 1 0 |a HUMAN 
690 1 0 |a POPULATION DENSITY 
690 1 0 |a REGRESSION ANALYSIS 
690 1 0 |a RHODNIUS 
690 1 0 |a RURAL HEALTH 
700 1 |a  Gürtler, Ricardo Esteban 
700 1 |a Leal, J.A. 
700 1 |a Feliciangeli, D. 
773 0 |d 1995  |g v. 73  |h pp. 347-357  |k n. 3  |p BULL. WHO  |x 00429686  |w (AR-BaUEN)CENRE-1352  |t Bulletin of the World Health Organization 
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