Evaluación del efecto larvicida del extracto acetónico de Eucaliptus Globulus en diferentes concentraciones en larvas de IV estadio de Aedes Aegypti en condiciones de laboratorio C.

Abstract

He larvicidal effect of acetone extract of Eucalyptus globulus on stage IV larvae of Aedes aegypti in laboratory conditions to test its effectiveness was evaluated. 5 treatments with 4 replicates, each containing 25 specimens with their respective controls were applied concentrations of 100, 250, 500, 750 and 1000 ppm were performed. The results showed that the most effective treatment was 1000 ppm at 87% cumulative mortality of larvae at 48 hours, in contrast to the 100 ppm treatment which exhibits toxicity only 9% in the same time. It was observed that the time interval having the most significant mortality was between 24 and 36 hours in the 5 treatments applied also it found that increasing the concentration of the treatment increased mortality. To evaluate the residual effect of the treatment, it was observed that at 10 days post-acute treatment, but the concentration of 1000 ppm produced a mortality of 43%, while the 20-day mortality was reduced by nearly half, is past say 30 days is no longer any residual effect on the means of implementation of the extract, indicating biodegradation and disappearance of the toxic effect.