Ecology and coexistence of Aedes aegypti (Linnaeus 1762) and Aedes (Ste.) albopictus (Skuse 1894) in two state parks in Cuiabá, MT, Brazil

Abstract

Scientific investigation of disease vectors is indispensable for knowledge of its Ecology, as they affect the health of human population. In this work, we present the results of the distribution and abundance of Aedes aegypti and Ae. albopictus in Massairo Okamura and Mãe Bonifácia state parks, Cuiabá-Mato Grosso, Brazil, to understand how changes in the rainy season interfere with their proliferation in natural wild areas located in urban regions. The focus was to investigate the coexistence of these species in the capture sites. The collections were carried out in eight campaigns within a period of 11 months of the year 2019, through ovitraps, with a total of 10 traps for each park. The results of the variables abundance (n) and relative humidity (%) were analyzed by the Statistic 7.0 program using factorial ANOVA. The 7117 quantified larvae produced 1462 adults for the two parks, with significant variability in mean abundance values between months and between sampling points. The record of the co-occurrence of Ae. aegypti and Ae. albopictus resulted in their coexistence and use of similar breeding sites under advantageous conditions for their colonization. The results presented showed that the parks have vulnerabilities in relation to the proliferation of vectors, and the environments must go through constant epidemiological surveillance. Faced with a serious situation in relation to arboviruses, it is essential to adopt strategies with greater investments in adequate methods, which provide sustainability to the actions established by surveillance networks.