Variability of susceptibility to deltamethrin in peridomestic Triatoma sordida from Triângulo Mineiro, State of Minas Gerais, Brazil
AbstractINTRODUCTION:Despite chemical and physical vector control strategies, persistent infestations of Triatoma sordida have been reported in a large part of Minas Gerais, Brazil, and the cause for this is little investigated. We aimed to characterize the deltamethrin toxicological profile in peri...
Published in: | Revista da Sociedade Brasileira de Medicina Tropical |
---|---|
Main Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Sociedade Brasileira de Medicina Tropical (SBMT)
2015
|
Subjects: | |
Online Access: | https://doi.org/10.1590/0037-8682-0047-2015 https://doaj.org/article/df4a9e3f60f943f487cc8ff97bc26a50 |
id |
ftdoajarticles:oai:doaj.org/article:df4a9e3f60f943f487cc8ff97bc26a50 |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:df4a9e3f60f943f487cc8ff97bc26a50 2023-05-15T15:07:22+02:00 Variability of susceptibility to deltamethrin in peridomestic Triatoma sordida from Triângulo Mineiro, State of Minas Gerais, Brazil Grasielle Caldas DÁvila Pessoa Tamara Rodrigues Martins dos Santos Gabriela Chadid Salazar Letícia Sena Dias Bernardino Vaz de Mello Marcela Lencine Ferraz Liléia Diotaiuti 2015-08-01T00:00:00Z https://doi.org/10.1590/0037-8682-0047-2015 https://doaj.org/article/df4a9e3f60f943f487cc8ff97bc26a50 EN eng Sociedade Brasileira de Medicina Tropical (SBMT) http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0037-86822015000400417&lng=en&tlng=en https://doaj.org/toc/1678-9849 1678-9849 doi:10.1590/0037-8682-0047-2015 https://doaj.org/article/df4a9e3f60f943f487cc8ff97bc26a50 Revista da Sociedade Brasileira de Medicina Tropical, Vol 48, Iss 4, Pp 417-421 (2015) Triatominae Triatoma sordida Triângulo Mineiro Insecticide resistance Deltamethrin Arctic medicine. Tropical medicine RC955-962 article 2015 ftdoajarticles https://doi.org/10.1590/0037-8682-0047-2015 2022-12-31T02:55:10Z AbstractINTRODUCTION:Despite chemical and physical vector control strategies, persistent infestations of Triatoma sordida have been reported in a large part of Minas Gerais, Brazil, and the cause for this is little investigated. We aimed to characterize the deltamethrin toxicological profile in peridomestic T. sordidapopulations from Triângulo Mineiro area of Minas Gerais.METHODS:Susceptibility to deltamethrin was assessed in seventeen peridomestic T. sordida populations. Serial dilutions of deltamethrin in acetone (0.2µL) were topically applied on the first instar nymphs (F1; five days old; fasting weight, 1.2 ± 0.2mg). Dose response results were analyzed using Probit software, and the lethal doses, slope and resistance ratios were determined. Qualitative tests were also performed.RESULTS:The deltamethrin susceptibility profile of T. sordida populations revealed resistance ratios ranging from 0.84 to 2.8. The percentage mortality in response to a diagnostic dose was 100.0% in all populations.CONCLUSIONS:From our results, the lack of resistance to insecticides but persistent T. sordida infestations in the Triângulo Mineiro area may be because of: 1) environmental degradation facilitating dispersion of T. sordida , allowing colonization in artificial ecotopes; 2) operational failures; and 3) complexity of the peridomicile in the study area.These variables are being investigated. Article in Journal/Newspaper Arctic Directory of Open Access Journals: DOAJ Articles Arctic Revista da Sociedade Brasileira de Medicina Tropical 48 4 417 421 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Triatominae Triatoma sordida Triângulo Mineiro Insecticide resistance Deltamethrin Arctic medicine. Tropical medicine RC955-962 |
spellingShingle |
Triatominae Triatoma sordida Triângulo Mineiro Insecticide resistance Deltamethrin Arctic medicine. Tropical medicine RC955-962 Grasielle Caldas DÁvila Pessoa Tamara Rodrigues Martins dos Santos Gabriela Chadid Salazar Letícia Sena Dias Bernardino Vaz de Mello Marcela Lencine Ferraz Liléia Diotaiuti Variability of susceptibility to deltamethrin in peridomestic Triatoma sordida from Triângulo Mineiro, State of Minas Gerais, Brazil |
topic_facet |
Triatominae Triatoma sordida Triângulo Mineiro Insecticide resistance Deltamethrin Arctic medicine. Tropical medicine RC955-962 |
description |
AbstractINTRODUCTION:Despite chemical and physical vector control strategies, persistent infestations of Triatoma sordida have been reported in a large part of Minas Gerais, Brazil, and the cause for this is little investigated. We aimed to characterize the deltamethrin toxicological profile in peridomestic T. sordidapopulations from Triângulo Mineiro area of Minas Gerais.METHODS:Susceptibility to deltamethrin was assessed in seventeen peridomestic T. sordida populations. Serial dilutions of deltamethrin in acetone (0.2µL) were topically applied on the first instar nymphs (F1; five days old; fasting weight, 1.2 ± 0.2mg). Dose response results were analyzed using Probit software, and the lethal doses, slope and resistance ratios were determined. Qualitative tests were also performed.RESULTS:The deltamethrin susceptibility profile of T. sordida populations revealed resistance ratios ranging from 0.84 to 2.8. The percentage mortality in response to a diagnostic dose was 100.0% in all populations.CONCLUSIONS:From our results, the lack of resistance to insecticides but persistent T. sordida infestations in the Triângulo Mineiro area may be because of: 1) environmental degradation facilitating dispersion of T. sordida , allowing colonization in artificial ecotopes; 2) operational failures; and 3) complexity of the peridomicile in the study area.These variables are being investigated. |
format |
Article in Journal/Newspaper |
author |
Grasielle Caldas DÁvila Pessoa Tamara Rodrigues Martins dos Santos Gabriela Chadid Salazar Letícia Sena Dias Bernardino Vaz de Mello Marcela Lencine Ferraz Liléia Diotaiuti |
author_facet |
Grasielle Caldas DÁvila Pessoa Tamara Rodrigues Martins dos Santos Gabriela Chadid Salazar Letícia Sena Dias Bernardino Vaz de Mello Marcela Lencine Ferraz Liléia Diotaiuti |
author_sort |
Grasielle Caldas DÁvila Pessoa |
title |
Variability of susceptibility to deltamethrin in peridomestic Triatoma sordida from Triângulo Mineiro, State of Minas Gerais, Brazil |
title_short |
Variability of susceptibility to deltamethrin in peridomestic Triatoma sordida from Triângulo Mineiro, State of Minas Gerais, Brazil |
title_full |
Variability of susceptibility to deltamethrin in peridomestic Triatoma sordida from Triângulo Mineiro, State of Minas Gerais, Brazil |
title_fullStr |
Variability of susceptibility to deltamethrin in peridomestic Triatoma sordida from Triângulo Mineiro, State of Minas Gerais, Brazil |
title_full_unstemmed |
Variability of susceptibility to deltamethrin in peridomestic Triatoma sordida from Triângulo Mineiro, State of Minas Gerais, Brazil |
title_sort |
variability of susceptibility to deltamethrin in peridomestic triatoma sordida from triângulo mineiro, state of minas gerais, brazil |
publisher |
Sociedade Brasileira de Medicina Tropical (SBMT) |
publishDate |
2015 |
url |
https://doi.org/10.1590/0037-8682-0047-2015 https://doaj.org/article/df4a9e3f60f943f487cc8ff97bc26a50 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Revista da Sociedade Brasileira de Medicina Tropical, Vol 48, Iss 4, Pp 417-421 (2015) |
op_relation |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0037-86822015000400417&lng=en&tlng=en https://doaj.org/toc/1678-9849 1678-9849 doi:10.1590/0037-8682-0047-2015 https://doaj.org/article/df4a9e3f60f943f487cc8ff97bc26a50 |
op_doi |
https://doi.org/10.1590/0037-8682-0047-2015 |
container_title |
Revista da Sociedade Brasileira de Medicina Tropical |
container_volume |
48 |
container_issue |
4 |
container_start_page |
417 |
op_container_end_page |
421 |
_version_ |
1766338888228405248 |