Bioactivity of Piper extracts on Tuta absoluta (Lepidoptera: Gelechiidae) in tomato

Abstract

-The objective of this work was to evaluate the bioactivity of ethanolic leaf extracts from four species of the genus Piper against the tomato leafminer Tuta absoluta (Lepidoptera: Gelechiidae) under laboratory conditions. The evaluated species were: P. amalago var. medium, P. glabratum, P. mikanianum, and P. mollicomum. In the initial screening assay (extract concentration of 2,000 mg L -1 ), all tested extracts caused significant larval mortality, particularly the extract of P. amalago var. medium; however, no extracts reduced the weight of the surviving larvae. The extract from P. amalago var. medium at the concentration of 1,011 mg L -1 caused a significant lengthening of the larval and pupal stages. The ethanolic leaf extract of P. amalago var. medium is promising for the control of T. absoluta larvae in tomato, since it exhibits acute toxicity toward these caterpillars at the concentration of 2,000 mg L -1 and affects the insect's development by reducing its survival and lengthening the larval and pupal stages.

<b>Ovicidal effect of the essential oils from 18 Brazilian <i>Piper</i> species: controlling <i>Anticarsia gemmatalis</i> (Lepidoptera, Erebidae) at the initial stage of development

“…It was shown that the chemical compounds present in these Piperaceae can be further evaluated among the isolation of active molecules to develop new botanical formulations, especially when we consider that the majority of these substances has been reported as potential insecticides in many other studies conducted worldwide (Santos et al, 2010;2013;Cáceres & Kato, 2014, Brito, Baldin, Silva, Ribeiro, & Vendramim, 2015Krinski & Foerster, 2016, Sanini et al 2017, Turchen, Hunhoff, Paulo,Souza, Pereira, 2016b and other plant families (Isman, 2000;Koul, Walia, & Dhaliwal, 2008;Tripathi, Upadhyay, Bhuiyan, & Bhattacharya, 2009;Coitinho, Oliveira, Gondim-Júnior, & Câmara, 2010;Ntalli & Menkissoglu-Spiroudi, 2011, Zoubiri & Baaliouamer, 2011Baskar, Muthu, Raj, Kingsley, & Ignacimuthu, 2012;Krishnappa & Elumalai, 2012;Cáceres & Kato, 2014Krinski, Massaroli, & Machado, 2014;Backiyaraj et al, 2015;Massaroli, Pereira, & Foerster;Costa, Santana, Oliveira, & Serrão, 2017).…”

Tomato leafminer [(Tuta absoluta Meyrick) (Lepidoptera: Gelechiidae)] and its current ecofriendly management strategies: A review

“…Ethanolic leaf extract obtained from Piper amalago var. medium, for instance, caused 70% larval and pupal mortality in twoAynalem 15 day exposure through exhibiting acute toxicity at the concentration of 2,000 mg L -1 (de Brito et al, 2015). The allelochemicals found in Piperaceae are diverse with insecticidal/insectistatic properties (Scott et al, 2008).…”

Fytosanitaire na-oogst behandel- en detectietechnieken voor plaagorganismen in tuinbouw

“…Essentiële olie uit groene kardemom (Elettaria cardamomum) uit de gemberfamilie heeft een insecticide effect op de eitjes, het 2 de larvale stadium van de rupsen in en op het blad en de motjes van T. absoluta met respectievelijk LC50 waarden van 351.19, 7.88, 1.55 en 1.88 μl/ml lucht (Chegini and Abbasipour 2017). Meerdere publicaties geven aan dat hoge afdoding tot 100% van verschillende stadia mogelijk is (Adil et al 2015b) (Brito et al 2015) (Abdel-Baky and Al-Soqeer 2017) (Ebadah et al 2016). Effectiviteit is vooral getest op eitjes, rupsen en adults, onderzoek naar poppen is beperkt.…”