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| Zarate,N; Díaz,O; Martínez,AM; Figueroa,JI; Schneider,MI; Smagghe,G; Viñuela,E; Budia,F; Pineda,S. |
| The lethal and sublethal effects of the ecdysone agonist methoxyfenozide on the fall armyworm, Spodoptera frugiperda (J. E. Smith), were investigated by feeding a methoxyfenozide-treated diet to fifth instars until pupation in doses corresponding to the LC10 and LC25 for the compound. Larval mortality reached 8% and 26% in the low and high concentration groups, respectively, on the seventh day of the experiment. A progressive larval mortality of 12% for the LC10 and 60% for the LC25 was observed before pupation. Treated larvae exhibited lower pupal weights, higher pupal mortality, presence of deformed pupae, and more deformed adults than untreated larvae. The incorporation of methoxyfenozide into the diet had a significant effect on the timing of larval... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ecdysone agonist; Insect growth regulator; Reproductive parameter. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2011000100020 |
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| Chernaki-Leffer,Andreia Mauruto; Sosa-Gómez,Daniel Ricardo; Almeida,Lúcia M.; Lopes,Ivani de Oliveira Negrão. |
| 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,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Insect growth regulator; Lesser mealworm; Poultry house; Pyrethroid; Organophosphates. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262011000100020 |
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| Ruiz-Sánchez,Esaú; Caamal-Eb,Lorenza; Cristóbal-Alejo,Jairo; Munguía-Rosales,Ricardo; Pérez-Gutiérrez,Alfonzo. |
| The multicolored Asian lady beetle, Harmonia axyridis Pallas (Coleoptera: Coccinelliadae), is a voracious predator of soft-bodied insects that has been widely used for biological control. In this work, we examined the effects of dilflubenzuron, an insect growth regulator (IGR), on a young population of H. axyridis under laboratory conditions in order to evaluate the risk of using this IGR in integrated pest management programs. Larval and pupal stages of H. axyridis were dipped 3 s in diflubenzuron dilutions (50, 100 or 200 mg L-1) or pure distilled water (control). The percentage of survival and the number of days from immature stage treated to adult emergence were evaluated. The negative effects were related to the developmental stages of H. axyridis and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: H. axyridis; Diflubenzuron; Insect growth regulator; Predator. |
| Ano: 2010 |
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952010000300011 |
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