TOXICOLOGICAL EFFECTS OF ETHANOLIC EXTRACT OF SEED AND BARK OF PERSEA AMERICANA (LAURACEAE), ON LARVAE AND PUPAE OF AEDES ALBOPICTUS (SKUSE, 1894) (DIPTERA, CULICIDAE)

Resumo

The toxicological effects of crude ethanolic extracts (CEE) of the seed and bark of Persea americana have been analyzed on larvae and pupae of Aedes albopictus secondary vector of dengue virus and main vector of chikungunya arboviruses in Asian countries. It was used 20 pupae and 20 larvae for each concentration and for each repetition, both for testing and controls, they were made in water and dimethylsulfoxide (DMSO). Mortality was observed after 24 h exposure of larvae and pupae. The lethal concentrations of the LC50 and LC90 (CEE) seed and stem bark of P. americana were, respectively, 3.5, 7.4 and 4.2, 8.2 mg/L for larvae, and 75.2, 132.1 and 68.9, 115.5 mg/L for pupae. These results indicate the possibility of using this plant for integrated control of Ae. albopictus mosquitoes and other disease vectors. Suggest further investigation of the active compounds through chemical studies.