文章基本信息

标题：Efeito do extrato aquoso de Simarouba versicolor sobre Sitophilus zeamais (Coleoptera: Curculionidae) em laboratório
本地全文：下载
作者：Bruno Pavan Alexandre ; Silvana Aparecida de Souza ; Marcia Regina Faita 等
期刊名称：Research, Society and Development
电子版ISSN：2525-3409
出版年度：2022
卷号：11
期号：13
页码：1-10
DOI：10.33448/rsd-v11i13.33575
语种：English
出版社：Grupo de Pesquisa Metodologias em Ensino e Aprendizagem em Ciências
摘要：The use of synthetic insecticides in the management of Sitophilus zeamais has caused problems, such as the selection of resistant insects, making the search for less aggressive control strategies desirable. Simarouba versicolor is a plant native to Brazil, with insecticidal properties. Due to the lack of information on the action of S. versicolor on stored grain pests, the effect of S. versicolor on S. zeamais adults was evaluated. The lethal effect was evaluated by direct and residual exposure to leaf extract of S. versicolor at concentrations of 0.1% and 0.01%, distilled water (negative control) and Citromax® at 0.1% concentration (positive control)). The sublethal effect was evaluated through population development parameters (ri) of the weevil in corn previously exposed to different treatments and repellency was verified in free-choice tests. Direct contact with S. versicolor caused a low mortality of S. zeamais. Mortality caused by Citromax® was 72.7% higher than that observed for S. versicolor 24h after exposure. Residual contact with S. versicolor and Citromax® caused a low mortality of S. zeamais. In evaluations after 120h the mortality caused by S. versicolor did not exceed 5.0%, while for Citromax® the mortality was 5.4%. The population of S. zeamais exposed to distilled water had the highest ri (0.014), being ≈ 28.5% higher than the ri of the populations of S. zeamais exposed to S. versicolor. Citromax® had a negative ri, indicating the probable extinction of the population. S. versicolor did not show repellent activities.
关键词：Corn weevil;Stored products;Natural insecticide.