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Density of Aedes aegypti and Aedes albopictus and its association with number of residents and meteorological variables in the home environment of dengue endemic area, São Paulo, Brazil
BACKGROUND: Measure the populations of Ae. aegypti and Ae. albopictus adults according to sex and location inside or outside the residence, estimate Ae. aegypti female density per house and per resident, and test the association with abiotic factors. METHODS: Adult mosquitoes were collected monthly...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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BioMed Central
2015
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4336725/ https://www.ncbi.nlm.nih.gov/pubmed/25890384 http://dx.doi.org/10.1186/s13071-015-0703-y |
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author | Rodrigues, Marianni de Moura Marques, Gisela Rita Alvarenga Monteiro Serpa, Lígia Leandro Nunes Arduino, Marylene de Brito Voltolini, Júlio Cesar Barbosa, Gerson Laurindo Andrade, Valmir Roberto de Lima, Virgília Luna Castor |
author_facet | Rodrigues, Marianni de Moura Marques, Gisela Rita Alvarenga Monteiro Serpa, Lígia Leandro Nunes Arduino, Marylene de Brito Voltolini, Júlio Cesar Barbosa, Gerson Laurindo Andrade, Valmir Roberto de Lima, Virgília Luna Castor |
author_sort | Rodrigues, Marianni de Moura |
collection | PubMed |
description | BACKGROUND: Measure the populations of Ae. aegypti and Ae. albopictus adults according to sex and location inside or outside the residence, estimate Ae. aegypti female density per house and per resident, and test the association with abiotic factors. METHODS: Adult mosquitoes were collected monthly with a hand net and portable electric catcher in the peridomiciliary and intradomiciliary premises of residences in an urban area with ongoing dengue transmission in the municipality of São Sebastião, Brazil, from February 2011 to February 2012. RESULTS: Of the 1,320 specimens collected, 1,311 were Ae. aegypti, and nine were Ae. albopictus. A total of 653 male and 658 female of Ae. aegypti were recorded, of which 80% were intradomiciliary. The mean density of Ae. aegypti adult females was 1.60 females/house and 0.42 females/resident. There was an association between the number of females and the number of residents in both intradomiciliary and peridomiciliary premises (r(2) = 0.92; p < 0.001 and r(2) = 0.68; p < 0.001, respectively). There was an association between the number of females and the mean and total rainfall; the correlation was better in peridomiciliary premises (p = 0.00; r(2) = 77%) than intradomiciliary premises in both cases (p = 0.01; r(2) = 48%). Minimum temperature was associated in both environments, exhibiting the same coefficient of determination (p = 0.02; r(2) = 40%). The low frequency of Ae. albopictus (seven females and two males) did not allow for detailed evaluation. CONCLUSIONS: Ae. aegypti is well established within the urban area studied, and the frequency of isolation is higher inside the houses. Female density was directly proportional to the number of residents in the houses. Our data show that human population density positively affects the number of Ae. aegypti females within the residence. Meteorological variables also affected mosquito populations. These data indicate a high probability of human-vector contact, increasing the possible transmission and spread of the DEN virus. Entomological indicators of adult females revealed important information complimenting what was obtained with traditional Stegomyia indices. This information should be a part of an interconnected data set for evaluating and controlling the vector. |
format | Online Article Text |
id | pubmed-4336725 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2015 |
publisher | BioMed Central |
record_format | MEDLINE/PubMed |
spelling | pubmed-43367252015-02-23 Density of Aedes aegypti and Aedes albopictus and its association with number of residents and meteorological variables in the home environment of dengue endemic area, São Paulo, Brazil Rodrigues, Marianni de Moura Marques, Gisela Rita Alvarenga Monteiro Serpa, Lígia Leandro Nunes Arduino, Marylene de Brito Voltolini, Júlio Cesar Barbosa, Gerson Laurindo Andrade, Valmir Roberto de Lima, Virgília Luna Castor Parasit Vectors Research BACKGROUND: Measure the populations of Ae. aegypti and Ae. albopictus adults according to sex and location inside or outside the residence, estimate Ae. aegypti female density per house and per resident, and test the association with abiotic factors. METHODS: Adult mosquitoes were collected monthly with a hand net and portable electric catcher in the peridomiciliary and intradomiciliary premises of residences in an urban area with ongoing dengue transmission in the municipality of São Sebastião, Brazil, from February 2011 to February 2012. RESULTS: Of the 1,320 specimens collected, 1,311 were Ae. aegypti, and nine were Ae. albopictus. A total of 653 male and 658 female of Ae. aegypti were recorded, of which 80% were intradomiciliary. The mean density of Ae. aegypti adult females was 1.60 females/house and 0.42 females/resident. There was an association between the number of females and the number of residents in both intradomiciliary and peridomiciliary premises (r(2) = 0.92; p < 0.001 and r(2) = 0.68; p < 0.001, respectively). There was an association between the number of females and the mean and total rainfall; the correlation was better in peridomiciliary premises (p = 0.00; r(2) = 77%) than intradomiciliary premises in both cases (p = 0.01; r(2) = 48%). Minimum temperature was associated in both environments, exhibiting the same coefficient of determination (p = 0.02; r(2) = 40%). The low frequency of Ae. albopictus (seven females and two males) did not allow for detailed evaluation. CONCLUSIONS: Ae. aegypti is well established within the urban area studied, and the frequency of isolation is higher inside the houses. Female density was directly proportional to the number of residents in the houses. Our data show that human population density positively affects the number of Ae. aegypti females within the residence. Meteorological variables also affected mosquito populations. These data indicate a high probability of human-vector contact, increasing the possible transmission and spread of the DEN virus. Entomological indicators of adult females revealed important information complimenting what was obtained with traditional Stegomyia indices. This information should be a part of an interconnected data set for evaluating and controlling the vector. BioMed Central 2015-02-19 /pmc/articles/PMC4336725/ /pubmed/25890384 http://dx.doi.org/10.1186/s13071-015-0703-y Text en © Rodrigues et al.; licensee BioMed Central. 2015 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated. |
spellingShingle | Research Rodrigues, Marianni de Moura Marques, Gisela Rita Alvarenga Monteiro Serpa, Lígia Leandro Nunes Arduino, Marylene de Brito Voltolini, Júlio Cesar Barbosa, Gerson Laurindo Andrade, Valmir Roberto de Lima, Virgília Luna Castor Density of Aedes aegypti and Aedes albopictus and its association with number of residents and meteorological variables in the home environment of dengue endemic area, São Paulo, Brazil |
title | Density of Aedes aegypti and Aedes albopictus and its association with number of residents and meteorological variables in the home environment of dengue endemic area, São Paulo, Brazil |
title_full | Density of Aedes aegypti and Aedes albopictus and its association with number of residents and meteorological variables in the home environment of dengue endemic area, São Paulo, Brazil |
title_fullStr | Density of Aedes aegypti and Aedes albopictus and its association with number of residents and meteorological variables in the home environment of dengue endemic area, São Paulo, Brazil |
title_full_unstemmed | Density of Aedes aegypti and Aedes albopictus and its association with number of residents and meteorological variables in the home environment of dengue endemic area, São Paulo, Brazil |
title_short | Density of Aedes aegypti and Aedes albopictus and its association with number of residents and meteorological variables in the home environment of dengue endemic area, São Paulo, Brazil |
title_sort | density of aedes aegypti and aedes albopictus and its association with number of residents and meteorological variables in the home environment of dengue endemic area, são paulo, brazil |
topic | Research |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4336725/ https://www.ncbi.nlm.nih.gov/pubmed/25890384 http://dx.doi.org/10.1186/s13071-015-0703-y |
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