Efeitos biológicos da exposição das larvas Aedes spp., 1762 Linnaeus à luz de led combinada com perturbação sonora

Abstract

The Aedes aegypti species, originating from the African continent, has been dispersed worldwide due to the transportation of slaves, becoming a significant vector for viruses causing diseases such as Zika, Chikungunya, and Dengue. Climate change and tourism have increased the spread of these diseases, and efforts to prevent and control mosquito-borne diseases, including Ae. aegypti, involve the use of insecticides, although this practice has not been highly successful in recent decades. Heat, light, and noise pollution are common in urban environments; therefore, this study aimed to analyze the exposure of larvae to LED light of white, green, and blue colors and their interactions with sound vibration waves at 14, 20, and 40 kHz, respectively. Each experimental unit resulted in a different dynamic in the decrease of the number of live larvae over time, with variations in the rate and magnitude of reduction. Blue light + 40 kHz showed a faster and more pronounced decrease in the number of larvae compared to other treatments and the control treatment, followed by Green light + 20 kHz. White light + 14 kHz showed no difference from the control treatment, being the least efficient. Based on these results, this study introduces a new method of controlling Ae. aegypti using natural resources such as light and sound.