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

Particle and Fibre Toxicology

Virgília Luna Castor de Lima³  Valmir Roberto Andrade³  Gerson Laurindo Barbosa¹  Júlio Cesar Voltolini⁴  Marylene de Brito Arduino²  Lígia Leandro Nunes Serpa²  Gisela Rita Alvarenga Monteiro Marques²  Marianni de Moura Rodrigues² 

[1] Superintendência de Controle de Endemias, Rua Paula Souza, 166, Luz, São Paulo CEP 01027-000, São Paulo, Brasil;Superintendência de Controle de Endemias, Praça Coronel Vitoriano, 23 Jardim Santa Clara, Centro, Taubaté CEP 12020-020, São Paulo, Brasil;Superintendência de Controle de Endemias, Rua São Carlos, 546, Campinas CEP 13035-420, São Paulo, Brasil;Universidade de Taubaté, Avenida Tiradentes, 500, Bom Conselho, Taubaté CEP 12030-180, São Paulo, Brasil

关键词: Meteorological variables;    Entomological indicator;    Dengue;    Culicidae;    Vector control;    Aedes aegypti;   

Others  :  1132149
DOI  :  10.1186/s13071-015-0703-y

 received in 2014-08-28, accepted in 2015-01-27,  发布年份 2015

【 摘 要 】

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 (r² = 0.92; p < 0.001 and r² = 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; r² = 77%) than intradomiciliary premises in both cases (p = 0.01; r² = 48%). Minimum temperature was associated in both environments, exhibiting the same coefficient of determination (p = 0.02; r² = 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.

【 授权许可】

   
2015 Rodrigues et al.; licensee BioMed Central.

【 图 表 】

Figure 1.

Figure 2.

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