SciELO - Scientific Electronic Library Online

 
vol.55 issue1Interaction between Telenomus remus and Trichogramma pretiosum in the management of Spodoptera spp.Host preference of the egg parasitoids Telenomus remus and Trichogramma pretiosum in laboratory author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand

Journal

Article

Indicators

Related links

Share


Revista Brasileira de Entomologia

Print version ISSN 0085-5626

Abstract

CHERNAKI-LEFFER, Andreia Mauruto; SOSA-GOMEZ, Daniel Ricardo; ALMEIDA, Lúcia M.  and  LOPES, Ivani de Oliveira Negrão. Susceptibility of Alphitobius diaperinus (Panzer) (Coleoptera, Tenebrionidae) to cypermethrin, dichlorvos and triflumuron in southern Brazil. Rev. Bras. entomol. [online]. 2011, vol.55, n.1, pp.125-128. ISSN 0085-5626.  http://dx.doi.org/10.1590/S0085-56262011000100020.

Susceptibility of Alphitobius diaperinus (Panzer) (Coleoptera, Tenebrionidae) to cypermethrin, dichlorvos and triflumuron in southern Brazil. The lesser mealworm, Alphitobius diaperinus (Panzer), is an important insect pest in poultry houses in Brazil. Susceptibility of the lesser mealworm collected from eight poultry houses in Paraná state, southern Brazil, was evaluated for cypermethrin, dichlorvos and triflumuron. Adult A. diaperinus were tested in bioassays with cypermethrin and dichlorvos. Larvae were fed rabbit feed wetted with a triflumuron-water solution. Concentration-mortality regressions were estimated using Probit analysis and resistance ratios were calculated based on the susceptible population. Among the field populations evaluated, cypermethrin LC50 values for adults, ranged from 68.1 to 6,263 ng (AI)/cm2. LC50 values for adults challenged with dichlorvos ranged from 10.3 to 1,385 ng (AI)/cm2. One population from Pato Branco showed reduced susceptibility to triflumuron (LC50 = 272 µg (AI)/ml of solution) when compared to the most susceptible population (LC50 = 109.8 µg (AI)/ml). Application of cypermethrin and dichlorvos analogues should be managed with caution to minimize insecticide resistance problems.

Keywords : Insect growth regulator; lesser mealworm; poultry house; pyrethroid; organophosphates.

        · abstract in Portuguese     · text in English     · English ( pdf )

 

Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License