Atividade antropofílica de Aedes aegypti e Aedes albopictus em área sob controle e vigilância

Abstract

ObjectiveTo describe the hematophagous activity of Ae. aegypti and Ae. albopictus in an area under control and surveillance. MethodsThe study was conducted during 18 months, from April, 1993 to October, 1994 Cosmópolis, São Paulo state, Brazil. Human baits were used to collect mosquitoes. The number of females captured is presented monthly by area of the city and local in the household. The rainfall was measured and indices are presented without model adjustment. ResultsThe presence of females of both species was observed in 83% (Ae. albopictus) and 61% (Ae. aegypti) of the period studied. The months of January, February and March presented the highest rates of activity for females of both species, with Ae. albopictus being more frequently captured than Ae. aegypti. Both species were captured in central and peripheral areas of the city, during the day from 9 to 12 am and from 4 to 7 pm. By a Poisson regression, it was observed that Ae. albopictus females were more frequently captured in the peri-housed area, in an independent way considering the area of the city. Conclusions It has been identified difference on the hematophagous activity only for Ae. albopictus, being of importance the outside area of the house.

Comparison Between Larval Survey Index and Positive Ovitrap Index in the Evaluation of Populations of Aedes (Stegomyia) aegypti (Linnaeus, 1762) North of Paraná, Brazil

“…Dhang et al, 45 using ovitraps in residential areas in Kuala Lumpur, Malaysia, observed that there was no significant difference for A. aegypti between interior and exterior. According to Gomes et al, 46 A. aegypti are found more often in intradomicile than peridomicile environments. Wan Norafikah et al, 47 in studies with ovitraps in areas located in Malaysia, found that ovitrap positivity was greater in the peridomicile than intradomicile area.…”

Especificidade da armadilha Adultrap para capturar fêmeas de Aedes aegypti (Diptera: Culicidae)

“…Este local apresentou rendimento significativamente maior em relação ao aspirador. Num outro estudo quemediu a atividade das fêmeas com isca humana 6 , sob condição de baixa abundância, não foi assinalado diferença significante na atividade hematofágica entre o intra e peridomicílio, entendendo-se que uma vez as fêmeas alimentadas buscam abrigo fora dos domicílios. No Estado de São Paulo, a maioria dos criadouros da espécie em questão são encontrados no peridomicilio 1 , daí a dispersão das fêmeas alimentadas ao peridomicílio parecer ser um hábito freqüente, motivo pelo qual estas fizeram da Adultrap um dos abrigo procurados.…”

Abundância e agregação de ovos de Aedes aegypti L. e Aedes albopictus (Skuse) (Diptera: Culicidae) no norte e noroeste do Paraná

“…Isso de fato indica a preferência de Ae. albopictus por áreas com características de transição entre urbana e rural (Lopes et al 2004, Gomes et al 2005.…”

“…albopictus não possui papel relevante como vetor de arbovírus para o Brasil, porém experimentalmente mostrou-se capaz de infectar-se e transmitir o vírus DEN-2 da dengue (Castro et al 2004). Podemos, no entanto, indicar que ambas as espécies exercem hematofagia no ambiente antrópico, sendo a primeira encontrada mais frequentemente no ambiente intradomiciliar e a segunda no ambiente extra-domiciliar (Gomes et al 2005).…”