Larvicidal activity of Maytenus guianensis (Celastraceae) against Aedes aegypti (Diptera: Culicidae)

Martins, Mirilene Mendes; Dias, Alyne Cunha Alves; Facundo, Valdir Alves; Lima, Renato Abreu; Meneguetti, Dionatas Ulises de Oliveira; Silva, Alexandre de Almeida e

doi:10.1590/0037-8682-0835-2020

Rev. Soc. Bras. Med. Trop.

2021

DOI: 10.1590/0037-8682-0835-2020

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Larvicidal activity of Maytenus guianensis (Celastraceae) against Aedes aegypti (Diptera: Culicidae)

Mirilene Mendes Martins

Alyne Cunha Alves Dias

Valdir Alves Facundo

et al.

Abstract: INTRODUCTION: Bioprospection of plant products is used to discover new insecticides. METHODS: The larvicidal activity of ethanolic extract and triterpene (tingenone B) from the bark of Maytenus guianensis and their effect on pupation and emergence were evaluated against Aedes aegypti . RESULTS: Crude extract LC 50 was 11.3 ppm and caused ejection of the larvae in… Show more

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2023

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Toxic effects of the crude methanolic extract of Austroplenckia populnea leaves and fractions on the growth of Spodoptera frugiperda

Pires Junior,

Silva Arin,

Menezes

et al. 2023

Acta Agro

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The aim of the current study is to assess the toxicity of Austroplenckia populnea leaf extracts towards the Spodoptera frugiperda population in laboratory conditions. Initially, a crude methanolic extract was obtained from dried leaves of A. populnea. This extract was fractionated using hexane, ethyl acetate, and then methanol. Neonate S. frugiperda 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 S. frugiperda larvae. A significant antibiosis effect was observed for the hexane fraction of the A. populnea extract, since all of its concentrations promoted a S. frugiperda 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 A. populnea leaf extract, mainly of its hexane fraction, has indicated its potential to be used in integrated S. frugiperda management programs.

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Toxic effects of the crude methanolic extract of Austroplenckia populnea leaves and fractions on the growth of Spodoptera frugiperda

Pires Junior,

Silva Arin,

Menezes

et al. 2023

Acta Agro

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Larvicidal activity of Maytenus guianensis (Celastraceae) against Aedes aegypti (Diptera: Culicidae)

Cited by 1 publication

References 11 publications

Toxic effects of the crude methanolic extract of <i>Austroplenckia populnea</i> leaves and fractions on the growth of <i>Spodoptera frugiperda</i>

Toxic effects of the crude methanolic extract of <i>Austroplenckia populnea</i> leaves and fractions on the growth of <i>Spodoptera frugiperda</i>

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