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SILVA, M.R.H. Spatial and seasonal distribution of Aedes aegypti and Aedes albopictus (Diptera: Culicidae) in Piqueri Municipal Park, São Paulo. [Dissertation (Public Health)]. São Paulo: Faculty of Public Health, University of São Paulo; 2017. Portuguese. Introduction: Urban yellow fever, dengue, chikungunya and Zika virus are arboviruses transmitted by the bite of females of mosquitoes of the genus Aedes, mainly Ae. aegypti and Ae. albopictus. They are sympatric species that develop in the same breeding sites, but some biological aspects of these vectors, such as distribution and frequency, are influenced by the level of urbanization of the environment and by climatic variables. Objective: To evaluate the distribution and frequency of Ae. aegypti and Ae. albopictus in three different areas of Piqueri Municipal Park, in the east zone of São Paulo, during spring and autumn. Methodology: During six consecutive weeks of spring of 2014 and 2015 and the autumn of 2015 and 2016, oviposition traps were installed in three different areas of the park, delimited according to the distance of the inhabited region and degree of vegetation coverage: A (internal), B (intermediate ) and C (peripheral). In the laboratory, eggs hatched at room temperature and L4 larvae were identified by species. Temperature and rainfall data were obtained from the Emergency Management Center of the City of São Paulo (CGE/SP). Results: A total of 38.561 Aedes eggs were collected, 23.509 larvae were identified: 5.270 Ae. aegypti and 18.239 from Ae. albopictus. The highest number of eggs was collected in the spring (25.457; 66%) and the highest egg hatching rate was obtained in the autumn (68,3% in 2015; 80,4% in 2016). Using the Incidence Rate Ratio (IRR), the negative binomial regression models indicated an association between the oviposition of the vectors and the season, being this association explained by the maximum and minimum temperatures. The kriging maps showed the spatial distribution of Ae. aegypti concentrated in area C, which is strongly associated and Ae. albopictus was distributed throughout the three study areas, mainly A and B, without significant association. Conclusion: The presence of Ae. aeypti and Ae. albopictus has already been pointed out in the parks of the city of São Paulo, showing how much these mosquitoes are adapted to these urban green areas. The results of the study corroborate with data from the literature and show that the increase in one unit of the maximum and minimum temperature variables also affects the increase of oviposition of both species. The spatial distribution showed the spatial segregation pattern of the vectors with Ae. aegypti, strictly anthropophilic, concentrated where human contact is greatest (area C), while Ae. albopictus, with eclectic behavior and associated with areas with a certain degree of vegetation coverage, although it has concentrated its distribution between areas A and B, was also found in area C. Urban parks can serve as a refuge for these vectors species that find shelter and source of food in these places, being able establish cycles of arbovirus transmission, therefore, it is of great interest that epidemiological surveillance also act in these areas.

Distribuição espacial e sazonal de Aedes aegypti e Aedes albopictus (Diptera: Culicidae) no Parque Municipal do Piqueri, São Paulo