"Observações ecológicas de Aedes albopictus (Diptera: Culicidae) em áreas de proteção ambiental e urbana da periferia na Grande São Paulo" / Ecological observations of Aedes albopictus (Diptera: Culicidae) in urban and preserved areas in the outskirts of Greater Sao Paulo.

AUTOR(ES)
DATA DE PUBLICAÇÃO

2004

RESUMO

SUMMARY Urbinatti PR. Ecological observations of Aedes albopictus (Diptera: Culicidae) in urban and preserved areas in the outskirts of Greater Sao Paulo. São Paulo; 2004. [Tese de Doutorado – Faculdade de Saúde Pública da Universidade de São Paulo]. Objective. To contribute to the knowledge of the ecology of the Ae. albopictus population both in a protected and in an urban environment. Methods. Two different environments were chosen to evaluate aspects of the infestation of the East End of the city: a protected environment - the Parque Ecológico do Tietê (PET) divided into environments 1 and 2, and another anthropogenically altered one - the Jardins São Francisco and Piratininga, divided in the same way. The first step of the investigation was undertaken in PET between April 2001 and March 2002 and the second step in the Jardins, between April 2002 and March 2003. To measure and compare Ae. Albopictus infestation as between PET and Jardins, 10 larvitraps and 10 ovitraps were installed around a domiciliary area with monitoring every 15 days in PET and every 10 days in the Jardins. The analysis of water samples for their chemical and physical parameters and associated fauna was undertaken. Results. Ae. albopictus was the most frequently collected species, both in artificial and natural breeding sites, accounting for 97.70% and 92.50% of the total of immature specimens collected in PET and in the Jardins, respectively. As regards the positive rates of ovitraps and larvitraps, PET presented higher values than the Jardins. There was a significant correlation between larval and pupal densities in the larvitraps and the temperature of water in tires and sites and a significant difference between larval densities in the larvitraps of environments 1 and 2 in both PET and Jardins, as regards the presence and absence of associated fauna. Conclusions. The frequent presence of Ae. albopictus in protected areas and in altered ones reinforces the evidence of its ecological adaptability in the colonization of both natural and artificial environments. This behavior associated with its competence and vectorial capacity should contribute with information that will be useful for control actions if these insects come to represent a public health threat. Key words: Aedes albopictus, vector, immature, ovitrap, larvitrap, urbanization

ASSUNTO(S)

aedes albopictus urbanization larvitrampa urbanização imaturos immature ovitrap larvitrap vector ovitrampa vetor aedes albopictus

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