A new tactic for Triatoma infestans control: fabrics impregnated with beta-cypermethrin
Triatoma infestans is the most important vector of Chagas disease in Argentina. Experiences from Argentine national campaigns have shown indoor spraying to control triatomine bugs is both expensive and difficult. An alternative control method may be the use of pyrethroid- impregnated fabrics (PIFs),...
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Pan American Health Organization
1999
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ftdoajarticles:oai:doaj.org/article:93dda855dc234f3883b0141ae53db433 2023-05-15T15:12:56+02:00 A new tactic for Triatoma infestans control: fabrics impregnated with beta-cypermethrin Edgardo Wood Susana A. de Licastro Norma Casabé María Inés Picollo Raúl Alzogaray Eduardo Nicolás Zerba 1999-07-01T00:00:00Z https://doi.org/10.1590/s1020-49891999000600001 https://doaj.org/article/93dda855dc234f3883b0141ae53db433 EN ES PT eng spa por Pan American Health Organization http://www.scielosp.org/scielo.php?script=sci_arttext&pid=S1020-49891999000600001&lng=en&tlng=en https://doaj.org/toc/1020-4989 1020-4989 doi:10.1590/s1020-49891999000600001 https://doaj.org/article/93dda855dc234f3883b0141ae53db433 Revista Panamericana de Salud Pública, Vol 6, Iss 1, Pp 1-7 (1999) Medicine R Arctic medicine. Tropical medicine RC955-962 Public aspects of medicine RA1-1270 article 1999 ftdoajarticles https://doi.org/10.1590/s1020-49891999000600001 2022-12-31T14:23:04Z Triatoma infestans is the most important vector of Chagas disease in Argentina. Experiences from Argentine national campaigns have shown indoor spraying to control triatomine bugs is both expensive and difficult. An alternative control method may be the use of pyrethroid- impregnated fabrics (PIFs), which could be both a practical and cheap complement to conventional control measures. In this study, a formulation of emulsifiable concentrate of beta-cypermethrin [a-cyano-3-phenoxybenzyl-3- (2,2-dichlorovinyl) -2,2-dimethylcyclopropanecarboxilate] pyrethroid was used to impregnate different fabrics. The fabrics were then tested for their efficacy and persistence in killing Triatoma infestans. Insects attempting to penetrate or grasp the fabric in search of blood meals were poisoned by the exposure to the absorbed pyrethroid. Laboratory bioassays showed that the insecticidal effect of the PIFs with a dosage of 0.2 g/m² lasted longer on wool than on cotton or rayon. Eight months after impregnation, a residual efficacy of 100% was found for wool, 80% for rayon-cotton fabrics, and 50% for rayon- polyester fabrics. In addition, beta-cypermethrin-impregnated fabrics showed a better repellency effect than did fabrics impregnated with either deltamethrin or cypermethrin. For field trials, fabrics were impregnated either in the laboratory or "in situ" at a dosage of 1 g beta-cypermethrin/m² and then dried. The PIFs were placed inside homes, either under the roof or under the bed mattress. The field trials showed the PIF approach to be very effective in keeping dwellings free of triatomine bugs for at least one year and found a high degree of acceptability among the houses residents. Article in Journal/Newspaper Arctic Directory of Open Access Journals: DOAJ Articles Arctic Argentina Argentine Revista Panamericana de Salud Pública 6 1 1 7 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English Spanish Portuguese |
topic |
Medicine R Arctic medicine. Tropical medicine RC955-962 Public aspects of medicine RA1-1270 |
spellingShingle |
Medicine R Arctic medicine. Tropical medicine RC955-962 Public aspects of medicine RA1-1270 Edgardo Wood Susana A. de Licastro Norma Casabé María Inés Picollo Raúl Alzogaray Eduardo Nicolás Zerba A new tactic for Triatoma infestans control: fabrics impregnated with beta-cypermethrin |
topic_facet |
Medicine R Arctic medicine. Tropical medicine RC955-962 Public aspects of medicine RA1-1270 |
description |
Triatoma infestans is the most important vector of Chagas disease in Argentina. Experiences from Argentine national campaigns have shown indoor spraying to control triatomine bugs is both expensive and difficult. An alternative control method may be the use of pyrethroid- impregnated fabrics (PIFs), which could be both a practical and cheap complement to conventional control measures. In this study, a formulation of emulsifiable concentrate of beta-cypermethrin [a-cyano-3-phenoxybenzyl-3- (2,2-dichlorovinyl) -2,2-dimethylcyclopropanecarboxilate] pyrethroid was used to impregnate different fabrics. The fabrics were then tested for their efficacy and persistence in killing Triatoma infestans. Insects attempting to penetrate or grasp the fabric in search of blood meals were poisoned by the exposure to the absorbed pyrethroid. Laboratory bioassays showed that the insecticidal effect of the PIFs with a dosage of 0.2 g/m² lasted longer on wool than on cotton or rayon. Eight months after impregnation, a residual efficacy of 100% was found for wool, 80% for rayon-cotton fabrics, and 50% for rayon- polyester fabrics. In addition, beta-cypermethrin-impregnated fabrics showed a better repellency effect than did fabrics impregnated with either deltamethrin or cypermethrin. For field trials, fabrics were impregnated either in the laboratory or "in situ" at a dosage of 1 g beta-cypermethrin/m² and then dried. The PIFs were placed inside homes, either under the roof or under the bed mattress. The field trials showed the PIF approach to be very effective in keeping dwellings free of triatomine bugs for at least one year and found a high degree of acceptability among the houses residents. |
format |
Article in Journal/Newspaper |
author |
Edgardo Wood Susana A. de Licastro Norma Casabé María Inés Picollo Raúl Alzogaray Eduardo Nicolás Zerba |
author_facet |
Edgardo Wood Susana A. de Licastro Norma Casabé María Inés Picollo Raúl Alzogaray Eduardo Nicolás Zerba |
author_sort |
Edgardo Wood |
title |
A new tactic for Triatoma infestans control: fabrics impregnated with beta-cypermethrin |
title_short |
A new tactic for Triatoma infestans control: fabrics impregnated with beta-cypermethrin |
title_full |
A new tactic for Triatoma infestans control: fabrics impregnated with beta-cypermethrin |
title_fullStr |
A new tactic for Triatoma infestans control: fabrics impregnated with beta-cypermethrin |
title_full_unstemmed |
A new tactic for Triatoma infestans control: fabrics impregnated with beta-cypermethrin |
title_sort |
new tactic for triatoma infestans control: fabrics impregnated with beta-cypermethrin |
publisher |
Pan American Health Organization |
publishDate |
1999 |
url |
https://doi.org/10.1590/s1020-49891999000600001 https://doaj.org/article/93dda855dc234f3883b0141ae53db433 |
geographic |
Arctic Argentina Argentine |
geographic_facet |
Arctic Argentina Argentine |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Revista Panamericana de Salud Pública, Vol 6, Iss 1, Pp 1-7 (1999) |
op_relation |
http://www.scielosp.org/scielo.php?script=sci_arttext&pid=S1020-49891999000600001&lng=en&tlng=en https://doaj.org/toc/1020-4989 1020-4989 doi:10.1590/s1020-49891999000600001 https://doaj.org/article/93dda855dc234f3883b0141ae53db433 |
op_doi |
https://doi.org/10.1590/s1020-49891999000600001 |
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Revista Panamericana de Salud Pública |
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6 |
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7 |
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