SciELO - Scientific Electronic Library Online

 
vol.78 issue1Effect of a milk diet in the parasitemia suppression and on the development of humoral immunity during the course of malarial infection in miceHost factors influencing outcome of Leishmania mexicana infection in mice author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand

Journal

Article

Indicators

Related links

Share


Memórias do Instituto Oswaldo Cruz

Print version ISSN 0074-0276On-line version ISSN 1678-8060

Mem. Inst. Oswaldo Cruz vol.78 no.1 Rio de Janeiro Jan./Mar. 1983

http://dx.doi.org/10.1590/S0074-02761983000100005 

Features of reproduction in laboratory-reared Aedes fluviatilis (Lutz, 1904) (Diptera: Culicidae)

Rotraut A. G. B. Cônsoli

Paul Williams

Elizabeth C. Moreno

Bernadete S. Santos

ABSTRACT

Observations were made on 100 female Aedes fluviatilis (Lutz) maintained individually from the first blood meal onwards and allowed one blood meal during each oviposition cycle, 5% dextrose solution been supplied throughout life. The average length of live was 49.9 ± 17.8 days; the logarithm of the mortality rate increased proportionately to physiological age. The insects took an average of 7.3 ± 3.2 blood meals and produced a mean of 7.9 ± 3.7 clutches of eggs. There was a progressive decrease, proportional to advancing physiological age, in the mean numbers of eggs laid in successive oviposition cycles, in the intervals between blood feeding oviposition, and in the numbers of larvae that hatched. Delayed oviposition, transient sterility and a total loss of fertility were also recorded.

RESUMO

De 100 fêmeas de Aedese fluviatilis (Lutz, 1904) individualmente observadas foram obtidos 45.475 ovos em um total de 790 posturas. As médias de desovas produzidas e de repastos sangüíneos ingeridos por fêmea, foram respectivamente 7,9 ± 3,7 e 7,3 ± 3,2 e a longevidade média foi de 49,9 ± 17,8 dias. Em análise de regressão linear, foi observado um progressivo decréscimo das médias de ovos por postura, larvas eclodidas e número de dias entre repasto sangüíneo e postura, proporcional ao aumento da idade fisiológica. Foram ainda observadas ocorrências de ingestão de sangue durante o desenvolvimento dos ovos, recusa de alimentação sangüínea entre desovas sucessivas, retenção espontânea de ovos por períodos apreciáveis, esterilidade transitória e esgotamento de fecundidade.

 

Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License