Investigation of the influence of environmental factors on the presence, density and spatial distribution of culicids vectors, in the western zone of the capital, São Paulo

Introduction: Several species of culicidae are vectors of pathogens that cause serious diseases in humans and other animals. Objectives: To investigate the presence and spatial distribution of vector insects in Cidade Universitária, Oeste - São Paulo and the environmental factors associated with its ocurrence. Methodology: The study area was the University City Armando de Salles Oliveira (CUASO), which was divided into four parts. The collections with ovitraps and adultraps were carried out from December 2013 to November 2014, monthly there were drawn ten collection points per area, in each area were installed ten ovitraps and ten adultraps. The collections with eletric aspirators (12V battery) occurred from January to December 2014 and monthly there were drawn two points per area to make the aspirations, totaling eight collection points per month, resulting in 120 minutes / month. All collected material was taken to the Laboratory of Entomology in Public Health of the Faculty of Public Health of USP for analysis. Results: In general the environmental variables influenced the presence of culicids collected. The egg density index was significantly influenced by temperature, while rainfall affected the adult presence more significantly. Regarding aspiration Culex quinquefasciatus was the predominant species in all collections, followed by Aedes albopictus and Aedes aegypti. However, only Aedes albopictus and Aedes aegypti showed a significant correlation with climatic variables. Conclusion: the presence of culicids insects in the University City was expressive practically all year round, making this place a propitious medium for the propagation of several arboviruses, necessitating a constant monitoring of the presence of these vectors