Susceptibility of Aedes aegypti populations to pyriproxyfen in the Federal District of Brazil
Abstract INTRODUCTION: In Brasilia, pyriproxyfen (PPF; 0.01 mg/L) has been used for the larval control of Aedes aegypti mosquitoes since 2016. Information on the susceptibility of Ae. aegypti to PPF, and the development of resistance in populations from the Federal District of Brazil (FD) is limited...
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)
|
Subjects: | |
Online Access: | https://doi.org/10.1590/0037-8682-0489-2019 https://doaj.org/article/5bfbb5d85ee2433b944e0cecd4ab8274 |
id |
ftdoajarticles:oai:doaj.org/article:5bfbb5d85ee2433b944e0cecd4ab8274 |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:5bfbb5d85ee2433b944e0cecd4ab8274 2023-05-15T15:09:33+02:00 Susceptibility of Aedes aegypti populations to pyriproxyfen in the Federal District of Brazil Bruno Lopes Carvalho Rayssa Nádia Leite Germano Kátia Maria Leal Braga Evaldo Rosano Ferreira de Araújo Douglas de Almeida Rocha Marcos Takashi Obara https://doi.org/10.1590/0037-8682-0489-2019 https://doaj.org/article/5bfbb5d85ee2433b944e0cecd4ab8274 EN eng Sociedade Brasileira de Medicina Tropical (SBMT) http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0037-86822020000100308&lng=en&tlng=en https://doaj.org/toc/0037-8682 https://doaj.org/toc/1678-9849 0037-8682 1678-9849 doi:10.1590/0037-8682-0489-2019 https://doaj.org/article/5bfbb5d85ee2433b944e0cecd4ab8274 Revista da Sociedade Brasileira de Medicina Tropical, Vol 53 aedes aegypti susceptibility resistance pyriproxyfen Arctic medicine. Tropical medicine RC955-962 article ftdoajarticles https://doi.org/10.1590/0037-8682-0489-2019 2022-12-30T21:39:13Z Abstract INTRODUCTION: In Brasilia, pyriproxyfen (PPF; 0.01 mg/L) has been used for the larval control of Aedes aegypti mosquitoes since 2016. Information on the susceptibility of Ae. aegypti to PPF, and the development of resistance in populations from the Federal District of Brazil (FD) is limited. It is essential to monitor the susceptibility of Ae. aegypti to insecticides in order to improve vector control strategies. This study aimed to evaluate the susceptibility of Ae. aegypti populations from five areas of Brasilia to PPF. METHODS: We performed dose-response tests to estimate the emergence inhibition and resistance ratio of each field population, including the Rockefeller reference population. We also analyzed egg positivity, and the density and mortality of larvae and pupae. RESULTS: Populations from Vila Planalto (RR50=1.7), Regiment Guards Cavalry (RR50=2.5), and Sub-secretary of Justice Complex (RR50=3.7) presented high susceptibility to PPF, while the RR values of populations from Lago Norte (RR50=7.7) and Varjão (RR50=5.9) were moderately high, suggesting the emergence of insipient resistance to PPF in Brasilia. At 30 ng/mL, the highest larvae mortality rate was 2.7% for the population from Lago Norte, while that of pupae was 92.1% for Varjão and Vila Planalto. CONCLUSIONS: The five populations of Ae. aegypti from the FD are susceptible to PPF and there is a need to monitor the susceptibility of Ae. aegypti in new areas of the FD. Article in Journal/Newspaper Arctic Directory of Open Access Journals: DOAJ Articles Arctic Revista da Sociedade Brasileira de Medicina Tropical 53 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
aedes aegypti susceptibility resistance pyriproxyfen Arctic medicine. Tropical medicine RC955-962 |
spellingShingle |
aedes aegypti susceptibility resistance pyriproxyfen Arctic medicine. Tropical medicine RC955-962 Bruno Lopes Carvalho Rayssa Nádia Leite Germano Kátia Maria Leal Braga Evaldo Rosano Ferreira de Araújo Douglas de Almeida Rocha Marcos Takashi Obara Susceptibility of Aedes aegypti populations to pyriproxyfen in the Federal District of Brazil |
topic_facet |
aedes aegypti susceptibility resistance pyriproxyfen Arctic medicine. Tropical medicine RC955-962 |
description |
Abstract INTRODUCTION: In Brasilia, pyriproxyfen (PPF; 0.01 mg/L) has been used for the larval control of Aedes aegypti mosquitoes since 2016. Information on the susceptibility of Ae. aegypti to PPF, and the development of resistance in populations from the Federal District of Brazil (FD) is limited. It is essential to monitor the susceptibility of Ae. aegypti to insecticides in order to improve vector control strategies. This study aimed to evaluate the susceptibility of Ae. aegypti populations from five areas of Brasilia to PPF. METHODS: We performed dose-response tests to estimate the emergence inhibition and resistance ratio of each field population, including the Rockefeller reference population. We also analyzed egg positivity, and the density and mortality of larvae and pupae. RESULTS: Populations from Vila Planalto (RR50=1.7), Regiment Guards Cavalry (RR50=2.5), and Sub-secretary of Justice Complex (RR50=3.7) presented high susceptibility to PPF, while the RR values of populations from Lago Norte (RR50=7.7) and Varjão (RR50=5.9) were moderately high, suggesting the emergence of insipient resistance to PPF in Brasilia. At 30 ng/mL, the highest larvae mortality rate was 2.7% for the population from Lago Norte, while that of pupae was 92.1% for Varjão and Vila Planalto. CONCLUSIONS: The five populations of Ae. aegypti from the FD are susceptible to PPF and there is a need to monitor the susceptibility of Ae. aegypti in new areas of the FD. |
format |
Article in Journal/Newspaper |
author |
Bruno Lopes Carvalho Rayssa Nádia Leite Germano Kátia Maria Leal Braga Evaldo Rosano Ferreira de Araújo Douglas de Almeida Rocha Marcos Takashi Obara |
author_facet |
Bruno Lopes Carvalho Rayssa Nádia Leite Germano Kátia Maria Leal Braga Evaldo Rosano Ferreira de Araújo Douglas de Almeida Rocha Marcos Takashi Obara |
author_sort |
Bruno Lopes Carvalho |
title |
Susceptibility of Aedes aegypti populations to pyriproxyfen in the Federal District of Brazil |
title_short |
Susceptibility of Aedes aegypti populations to pyriproxyfen in the Federal District of Brazil |
title_full |
Susceptibility of Aedes aegypti populations to pyriproxyfen in the Federal District of Brazil |
title_fullStr |
Susceptibility of Aedes aegypti populations to pyriproxyfen in the Federal District of Brazil |
title_full_unstemmed |
Susceptibility of Aedes aegypti populations to pyriproxyfen in the Federal District of Brazil |
title_sort |
susceptibility of aedes aegypti populations to pyriproxyfen in the federal district of brazil |
publisher |
Sociedade Brasileira de Medicina Tropical (SBMT) |
url |
https://doi.org/10.1590/0037-8682-0489-2019 https://doaj.org/article/5bfbb5d85ee2433b944e0cecd4ab8274 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Revista da Sociedade Brasileira de Medicina Tropical, Vol 53 |
op_relation |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0037-86822020000100308&lng=en&tlng=en https://doaj.org/toc/0037-8682 https://doaj.org/toc/1678-9849 0037-8682 1678-9849 doi:10.1590/0037-8682-0489-2019 https://doaj.org/article/5bfbb5d85ee2433b944e0cecd4ab8274 |
op_doi |
https://doi.org/10.1590/0037-8682-0489-2019 |
container_title |
Revista da Sociedade Brasileira de Medicina Tropical |
container_volume |
53 |
_version_ |
1766340721555537920 |