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vol.18 issue1Relative immunity to poliomyelitis in children up to ten years of age, after the "4th National Antipoliomyelitis Vaccination Day" with trivalent oral Sabin vaccine, in Greater S. Paulo (Brazil), 1982Variation in the levels of the C3 component of the complement in Holochilus brasiliensis nanus infected with Schistosoma mansoni author indexsubject indexarticles search
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Revista de Saúde Pública

On-line version ISSN 1518-8787Print version ISSN 0034-8910


FORATTINI, Oswaldo Paulo et al. Ecological aspects of South American trypanosomiasis: XX - Development and annual cycles of Panstrongylus megistus colonies in artificial ecotopes in the peri and extradomiciliary environment. Rev. Saúde Pública [online]. 1984, vol.18, n.1, pp.30-40. ISSN 1518-8787.

Spontaneous colonies of Panstrongylus megistus developed in experimental fowlhouses were observed for the conditions of their development, variation and permanence of their components. Data were also obtained on their annual cycles and survival. The annual cyclical rhythm showed an increase of adult production in the last quarter of the year, with a similar pattern of females findings in the dwellings. This cyclic colony dynamic makes possible the identification of the "infestant" period for the "susceptible" domiciliary environment composed of the previously cleaned dwellings. The reinfestation risk from extradomiciliary P. megistus in this Southern region of Brazil occurs at this time. These information allows their utilization for surveillance activities to prevent house reinfestation.

Keywords : Trypanosomiasis, South American; Panstrongylus megistus; Triatominae [domiciliation]; Triatominae [dispersal]; Triatominae [population dynamics]; Ecology.

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