Armadilha para a oviposição do Aedes: uma ferramenta de vigilância em saúde

Abstract

In order to improve entomological surveillance of dengue and yellow fever vectors in the state of Pará, the aim of this study was to determine the effectiveness of traps for monitoring the oviposition of Aedes spp. in different seasonal periods in Santarém, Pará, in the Brazilian Amazon. To this end, a field survey was carried out between November 2023 and February 2024. The campus of the Federal University of Western Pará, Santarém, which has continuous and daily monitoring, was chosen to install the traps, which were made from 400mL dark plastic material and 12cm x 5cm Eucatex sheets. The monitoring, egg collection and calculation of Aedes spp. vector stoichiometric indices were carried out using distributed ovitraps. The ovitrap positivity index (IPO %) and egg density index (IDO) were estimated according to seasonality and the number of eggs was correlated with the meteorological parameters (temperature/pluviometry) and the stoic index (IPO/IDO). A total of 19 ovitraps, installed in places with high and low foot traffic, were analyzed over four months, at the end of which a total of 3,553 Aedes spp. eggs were observed. In the region's dry and rainy seasons, 592, 2961 eggs were obtained, respectively. During the study period, the IPO ranged from 47.4% to 100.0% and the IDO ranged from 29.2 to 62.5. The findings point to the presence of eggs and vectors of the Aedes aegypti genus even in different seasonal periods for this species and highlight health monitoring actions throughout the year.