UNIDEF   23986
UNIDAD DE INVESTIGACION Y DESARROLLO ESTRATEGICO PARA LA DEFENSA
Unidad Ejecutora - UE
artículos
Título:
Sublethal effect of pyriproxyfen released from a fumigant formulation on fecundity, fertility and ovicidal action in Aedes aegypti (Diptera: Culicidae)
Autor/es:
LAURA HARBURGUER; EDUARDO ZERBA; SUSANA LICASTRO
Revista:
JOURNAL OF MEDICAL ENTOMOLOGY
Editorial:
ENTOMOLOGICAL SOC AMER
Referencias:
Lugar: Lanham; Año: 2014 vol. 5 p. 436 - 443
ISSN:
0022-2585
Resumen:
Dengue and dengue hemorrhagic fever (DHF) are mosquito-borne viral diseases that coincide with the distribution of Aedes aegypti (L.), the primary vector in the tropical and semitropical world. With no available vaccine, controlling the dengue vector is essential to avoid epidemics. The effects of the insect growth regulator pyriproxyfen on Ae. aegypti adults which survived to a treatment with a sublethal dose were investigated in the laboratory, including effects on their reproductive potential. Pyriproxyfen was released from a fumigant formulation at a dose causing 20 or 40% emergence inhibition (%EI). Both fertility and fecundity were reduced at a concentration of IE40 but no at EI20. Females were dissected before and after a blood feeding and the basal follicle number was counted. There were no differences between the control and treated group in the basal follicle number for both doses used.  There was no ovicidal effect of pyriproxyfen by immersion of eggs in treated water neither when the females laid their eggs in a pyriproxyfen treated surface. This work shows that sublethal doses of pyriproxyfen have effects on fertility andfecundity of Ae. aegypti females that together with its larvicidalactivity could contribute to decrease this vector population.