title: The use of andiroba Carapa guianensis as larvicide against Aedes albopictus.
abstract: Andiroba Carapa guianensis Aubl. Meliacea is known to possess repellent activity against many mosquito species. We evaluated the larvicidal effect of dry-scratched seed kernels of andiroba against a sylvatic F1 progeny and a laboratory-colonized population of Aedes albopictus (Skuse). The 3rd instar of F1 treated with 0.5 to 2% of C. guianensis for 24 and 48 hours, had mortality with LC50 of 0.74 (0.56-0.90%) and 0.68 (0.53-0.84%), respectively, and the 4th instar 0.66 (0.52-0.80%) and 0.55 (0.20-0.91%), respectively. For the 3rd instars of laboratory-colonized larvae, the treatment with 0.5 to 4% of C. guianensis induced mortality after 24 hours with LC50 of 1.81 (1.39-2.22%), and an LC50 of 1.82 (1.57-2.07%) to the 4th instar. This is the 1st report of the larvicidal effect of C. guianensis on mosquitoes.
authors.affiliation: Laboratorio de Entomologia Medica, Curso de Medicina, Universidade do Sul de Santa Catarina, Av. Jose Acacio Moreira, 787, Dehon, 88704-900 Tubarao-SC, Brazil.
authors.forename: Onilda S
authors.initials: OS
authors.lastname: Silva
authors.forename: Pedro R T
authors.initials: PR
authors.lastname: Romão
authors.forename: Rene D
authors.initials: RD
authors.lastname: Blazius
authors.forename: Josiane S
authors.initials: JS
authors.lastname: Prohiro
mesh_terms: D000330:Aedes; D000818:Animals; D005260:Female; D007306:Insecticides; D007814:Larva; D008297:Male; D029582:Meliaceae; D012639:Seeds
chemical_list: D007306:Insecticides