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      Periodicidade de oviposição de fêmeas de Aedes aegypti (Linnaeus, 1762) (Diptera: Culicidae) em laboratório e campo Translated title: Periodicity of oviposition of females of Aedes aegypti (Linnaeus, 1762) (Diptera: Culicidae) in laboratory and field

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          Abstract

          O objetivo deste trabalho foi determinar o padrão gonotrófico de fêmeas de Aedes aegypti em condições de laboratório e de campo. Fêmeas copuladas e alimentadas com sangue de galinha foram transferidas para gaiolas de polipropileno e oferecidos diferentes substratos de oviposição (papel sulfite, filtro, manteiga e toalha). O papel filtro recebeu significativamente maior (40,4%) deposição de ovos do que os demais substratos. Observou-se que maior (35,7% dia modal) oviposição ocorreu ao terceiro dia, após alimentação sangüínea. Foi observada a oviposição das fêmeas a cada duas horas de intervalo, durante o fotoperíodo em laboratório e em campo por meio de ovitrampas. Os resultados de laboratório demonstraram que maior deposição de ovos ocorreu entre a 9ª - 12ª hora da fotofase e 1ª - 2ª hora de escotofase. Em campo maior número de ovos ocorreu entre 9ª - 12ª hora de fotofase e na 1ª - 4ª hora de escotofase. Estes resultados indicam que Aedes aegypti exibiu um padrão na periodicidade de oviposição e podem subsidiar em programas de monitoramento e ou controle do inseto vetor. Sugere-se que, em campo, por exemplo, armadilhas de oviposição (ovitrampa) devem ser instaladas no período da manhã pois as capturas ocorrem a partir do período da tarde.

          Translated abstract

          The object of this work was to determine of gonotrophic diel pattern of female Aedes aegypti in laboratory and field conditions. Three day-old female mosquitoes were the fed on chicken blood and transferred to bioassay cages. Four oviposition substrates were offered: paper sulfite, filter, butter and towel. The results showed that filter paper received a significantly higher (40.4%) percentage of deposited eggs than the other oviposition substrates. After their first blood meal, females started to oviposit on the 3rd model day; 35.7% of the total number of eggs deposited. The oviposition diel patterns of females were observed every two hours during the photoperiod in the laboratory and in the field. In the laboratory, the periodicity of oviposition showed that the highest egg deposition occurred during the 9th- 12th h of photophase and 1st - 2nd h of scotophase. In the field, the highest egg deposition occurred during the 9th - 12th h of photophase and 1st - 4th h of scotophase. These results point out that Aedes aegypti showed an oviposition periodicity pattern that can subsidize monitoring and or control of vector insect. itis suggested that ovitraps should be placed in the field during the morning hours since the captures occur during afternoon.

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          Enhancement of the CDC ovitrap with hay infusions for daily monitoring of Aedes aegypti populations.

          An ovitrap containing hay infusion and a second ovitrap adjacent to it containing a 10% dilution of the infusion in tap water together yielded 8 times more Aedes aegypti eggs than single CDC ovitraps containing tap water. These "enhanced pairs" were significantly more attractive than pairs with other combinations of infusion, water or methyl propionate, and have proven useful for daily monitoring of Ae. aegypti populations. Our results shed light on the oviposition behavior of Ae. aegypti in the field.
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            Medidas dos níveis de infestação urbana para aedes (stegomyia) aegypti e aedes (stegomyia) albopictus em Programa de Vigilância Entomológica

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              Reexamination of chemically mediated oviposition behavior in Aedes aegypti (L.) (Diptera: Culicidae).

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                Author and article information

                Journal
                rsbmt
                Revista da Sociedade Brasileira de Medicina Tropical
                Rev. Soc. Bras. Med. Trop.
                Sociedade Brasileira de Medicina Tropical - SBMT (Uberaba, MG, Brazil )
                0037-8682
                1678-9849
                August 2006
                : 39
                : 4
                : 327-332
                Affiliations
                [01] Belo Horizonte MG orgnameUniversidade Federal de Minas Gerais orgdiv1Instituto de Ciências Biológicas orgdiv2Departamento de Parasitologia
                Article
                S0037-86822006000400002 S0037-8682(06)03900402
                10.1590/S0037-86822006000400002
                76c2137d-a501-4512-9e2e-a05c17ca1927

                This work is licensed under a Creative Commons Attribution 4.0 International License.

                History
                : 29 May 2006
                : 14 July 2006
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 28, Pages: 6
                Product

                SciELO Brazil

                Categories
                Artigos

                Substratos,Oviposition,Aedes aegypti,Photoperiod,Substrates,Oviposição,Fotoperíodo

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