Evaluation of methoprene effect on Aedes aegypti (Diptera: Culicidae) development in laboratory conditions

43Citations
Citations of this article
73Readers
Mendeley users who have this article in their library.

Abstract

Several Brazilian Aedes aegypti populations are resistant to the larvicidae temephos. Methoprene, that inhibits adult emergence, is one of the alternatives envisaged by the Brazilian Dengue Control Program (PNCD). However, at Brazil vector infestation rates are measured through larvae indexes and it has been claimed that methoprene use in the field could face operational problems. In order to define a standardized protocol, methoprene effect was evaluated in laboratory conditions after continuous exposure of larvae (Rockefeller strain) to a methoprene formulation available to the PNCD. Methoprene-derived mortality occurs mainly at the pupa stage and pupa development is inversely proportional to methoprene concentration. Number and viability of eggs laid by treated and control females are equivalent. A methoprene dose-dependent delay in the development was noted; however, strong correlations were found for total mortality or adult emergence inhibition if data obtained when all control mosquitoes have emerged are compared to data obtained when methoprene-treated groups finish development. The cumulative record of total methoprene-induced mortality at the time control adults emerge is proposed for routine evaluation of field populations. Mortality of all specimens, but not of larva, could account for adult emergence inhibition, confirming the inadequacy of larvae indexes to evaluate methoprene effect.

Cite

CITATION STYLE

APA

Braga, I. A., Mello, C. B., Peixoto, A. A., & Valle, D. (2005). Evaluation of methoprene effect on Aedes aegypti (Diptera: Culicidae) development in laboratory conditions. Memorias Do Instituto Oswaldo Cruz, 100(4), 435–440. https://doi.org/10.1590/S0074-02762005000400016

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free