Abstract
The aim of the current study is to assess the toxicity of <i>Austroplenckia populnea</i> leaf extracts towards the <i>Spodoptera frugiperda</i> population in laboratory conditions. Initially, a crude methanolic extract was obtained from dried leaves of <i>A. populnea</i>. This extract was fractionated using hexane, ethyl acetate, and then methanol. Neonate <i>S. frugiperda</i> larvae were isolated in plastic containers and fed (once) on corn leaf fragments treated with crude and fractions of the investigated plant extracts. The life cycle of the larvae treated with the extracts was monitored. In addition to the intake of leaves treated with the plant extracts, such variables as larval and pupal mortality rate, larval and pupal weight, and larval, pupal, and adult stage duration were evaluated. The crude, hexane, and methanol extract fractions exerted an antixenosis effect on the feeding behaviour of neonate <i>S. frugiperda</i> larvae. A significant antibiosis effect was observed for the hexane fraction of the <i>A. populnea</i> extract, since all of its concentrations promoted a <i>S. frugiperda</i> larval mortality rate differing from that observed for the control. The pupal mortality rate was low, but it did not differ significantly from the mortality rate observed for the control treatment, which was nil. The larvicidal effect of the <i>A. populnea</i> leaf extract, mainly of its hexane fraction, has indicated its potential to be used in integrated <i>S. frugiperda</i> management programs.
Subject
Plant Science,Agronomy and Crop Science,Ecology, Evolution, Behavior and Systematics
Reference40 articles.
1. Anti-inflammatory and antinociceptive activities of extract, fractions and populnoic acid from bark wood of Austroplenckia populnea;Andrade S.;Journal of Ethnopharmacology,2007
2. Antileishmanial, antimalarial and antimicrobial activities of the extract and isolated compounds from Austroplenckia populnea (Celastraceae);Andrade S.;Zeitschrift für Naturforschung C,2008
3. Isolamento, determinação estrutural dos constituintes químicos das folhas de Plenckia populnea (Celastraceae);Arini L.;VI Congresso de Ensino, Pesquisa e Extensão da UEG,2019
4. Insecticidal Activity of Maytenus Species (Celastraceae) Nortriterpene Quinone Methides against Codling Moth, Cydia pomonella (L.) (Lepidoptera: Tortricidae);Avilla J.;Journal of Agricultural and Food Chemistry,2000
5. Toxicity of Machaerium opacum (Fabaceae) leaf extracts against fall armyworm (Spodoptera frugiperda (J. E. Smith) (Lepidoptera: Noctuidae);Bezerra E.;Journal of Agricultural Science,2019