Toxicity of alkaloid fractions from Psychotria spp. (Rubiaceae) against Atta Sexdens Forel, 1908 (Hymenoptera: formicidae)
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFLA |
Texto Completo: | http://repositorio.ufla.br/jspui/handle/1/40331 |
Resumo: | Leaf-cutting ants are the main pests in forest plantations. The most commonly used chemical control for the ants is toxic bait. However, the active ingredients in these baits have been restricted by forest certification organizations, justifying the search for new active compounds to control these insects. Thus, this work aimed to evaluate the formicidal activity of alkaloid fractions from the roots, stems, branches and leaves of Psychotria hastisepala and Psychotria leiocarpa (Rubiaceae) against Atta sexdens Forel, 1908 (Hymenoptera: Formicidae). The alkaloid fractions were obtained from the crude methanolic extracts of P. hastisepala and P. leiocarpa by the acid-base extraction method employing liquid-liquid partitions. The fractions, previously solubilized in propanone, were applied topically to the pronotum of worker ants. Bioassays were conducted in a completely randomized design, with six replicates of each treatment and 10 ants per replicate. Insect survival was assessed daily for 21 days. The median lethal time was estimated by Weibull models. The root fractions from P. hastisepala presented the highest toxicity, followed by those from the branches, stems and leaves. Among fractions from P. hastisepala roots, the most toxic were a fraction that apparently is rich in lipophilic compounds and nonbasic alkaloids and a fraction that is likely rich in quaternary benzophenanthridine alkaloids, protopine alkaloids and tertiary bases. Psychotria leiocarpa fractions were not toxic to this insect. Psychotria hastisepala is potentially useful for the development of new products for A. sexdens control. |
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Toxicity of alkaloid fractions from Psychotria spp. (Rubiaceae) against Atta Sexdens Forel, 1908 (Hymenoptera: formicidae)AlkaloidsBotanical insecticideForest pestsLeaf-cutting ants - Chemical controlAlcalóidesInseticida botânicoPragas florestaisFormigas cortadeiras - Controle químicoLeaf-cutting ants are the main pests in forest plantations. The most commonly used chemical control for the ants is toxic bait. However, the active ingredients in these baits have been restricted by forest certification organizations, justifying the search for new active compounds to control these insects. Thus, this work aimed to evaluate the formicidal activity of alkaloid fractions from the roots, stems, branches and leaves of Psychotria hastisepala and Psychotria leiocarpa (Rubiaceae) against Atta sexdens Forel, 1908 (Hymenoptera: Formicidae). The alkaloid fractions were obtained from the crude methanolic extracts of P. hastisepala and P. leiocarpa by the acid-base extraction method employing liquid-liquid partitions. The fractions, previously solubilized in propanone, were applied topically to the pronotum of worker ants. Bioassays were conducted in a completely randomized design, with six replicates of each treatment and 10 ants per replicate. Insect survival was assessed daily for 21 days. The median lethal time was estimated by Weibull models. The root fractions from P. hastisepala presented the highest toxicity, followed by those from the branches, stems and leaves. Among fractions from P. hastisepala roots, the most toxic were a fraction that apparently is rich in lipophilic compounds and nonbasic alkaloids and a fraction that is likely rich in quaternary benzophenanthridine alkaloids, protopine alkaloids and tertiary bases. Psychotria leiocarpa fractions were not toxic to this insect. Psychotria hastisepala is potentially useful for the development of new products for A. sexdens control.Universidade Federal de Lavras2020-04-24T13:23:57Z2020-04-24T13:23:57Z2019info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfALVES, D. S. et al. Toxicity of alkaloid fractions from Psychotria spp. (Rubiaceae) against Atta Sexdens Forel, 1908 (Hymenoptera: formicidae). Cerne, Lavras, v. 25, n. 2, p. 255-262, 2019.http://repositorio.ufla.br/jspui/handle/1/40331Cernereponame:Repositório Institucional da UFLAinstname:Universidade Federal de Lavras (UFLA)instacron:UFLAAttribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessAlves, Dejane SantosFernandez, Pilar Canela GarciaMartin, Alejandro MartinBudia, FlorCarvalho, Geraldo AndradeZanetti, RonaldOliveira, Denilson Ferreira deeng2020-04-24T13:23:57Zoai:localhost:1/40331Repositório InstitucionalPUBhttp://repositorio.ufla.br/oai/requestnivaldo@ufla.br || repositorio.biblioteca@ufla.bropendoar:2020-04-24T13:23:57Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)false |
dc.title.none.fl_str_mv |
Toxicity of alkaloid fractions from Psychotria spp. (Rubiaceae) against Atta Sexdens Forel, 1908 (Hymenoptera: formicidae) |
title |
Toxicity of alkaloid fractions from Psychotria spp. (Rubiaceae) against Atta Sexdens Forel, 1908 (Hymenoptera: formicidae) |
spellingShingle |
Toxicity of alkaloid fractions from Psychotria spp. (Rubiaceae) against Atta Sexdens Forel, 1908 (Hymenoptera: formicidae) Alves, Dejane Santos Alkaloids Botanical insecticide Forest pests Leaf-cutting ants - Chemical control Alcalóides Inseticida botânico Pragas florestais Formigas cortadeiras - Controle químico |
title_short |
Toxicity of alkaloid fractions from Psychotria spp. (Rubiaceae) against Atta Sexdens Forel, 1908 (Hymenoptera: formicidae) |
title_full |
Toxicity of alkaloid fractions from Psychotria spp. (Rubiaceae) against Atta Sexdens Forel, 1908 (Hymenoptera: formicidae) |
title_fullStr |
Toxicity of alkaloid fractions from Psychotria spp. (Rubiaceae) against Atta Sexdens Forel, 1908 (Hymenoptera: formicidae) |
title_full_unstemmed |
Toxicity of alkaloid fractions from Psychotria spp. (Rubiaceae) against Atta Sexdens Forel, 1908 (Hymenoptera: formicidae) |
title_sort |
Toxicity of alkaloid fractions from Psychotria spp. (Rubiaceae) against Atta Sexdens Forel, 1908 (Hymenoptera: formicidae) |
author |
Alves, Dejane Santos |
author_facet |
Alves, Dejane Santos Fernandez, Pilar Canela Garcia Martin, Alejandro Martin Budia, Flor Carvalho, Geraldo Andrade Zanetti, Ronald Oliveira, Denilson Ferreira de |
author_role |
author |
author2 |
Fernandez, Pilar Canela Garcia Martin, Alejandro Martin Budia, Flor Carvalho, Geraldo Andrade Zanetti, Ronald Oliveira, Denilson Ferreira de |
author2_role |
author author author author author author |
dc.contributor.author.fl_str_mv |
Alves, Dejane Santos Fernandez, Pilar Canela Garcia Martin, Alejandro Martin Budia, Flor Carvalho, Geraldo Andrade Zanetti, Ronald Oliveira, Denilson Ferreira de |
dc.subject.por.fl_str_mv |
Alkaloids Botanical insecticide Forest pests Leaf-cutting ants - Chemical control Alcalóides Inseticida botânico Pragas florestais Formigas cortadeiras - Controle químico |
topic |
Alkaloids Botanical insecticide Forest pests Leaf-cutting ants - Chemical control Alcalóides Inseticida botânico Pragas florestais Formigas cortadeiras - Controle químico |
description |
Leaf-cutting ants are the main pests in forest plantations. The most commonly used chemical control for the ants is toxic bait. However, the active ingredients in these baits have been restricted by forest certification organizations, justifying the search for new active compounds to control these insects. Thus, this work aimed to evaluate the formicidal activity of alkaloid fractions from the roots, stems, branches and leaves of Psychotria hastisepala and Psychotria leiocarpa (Rubiaceae) against Atta sexdens Forel, 1908 (Hymenoptera: Formicidae). The alkaloid fractions were obtained from the crude methanolic extracts of P. hastisepala and P. leiocarpa by the acid-base extraction method employing liquid-liquid partitions. The fractions, previously solubilized in propanone, were applied topically to the pronotum of worker ants. Bioassays were conducted in a completely randomized design, with six replicates of each treatment and 10 ants per replicate. Insect survival was assessed daily for 21 days. The median lethal time was estimated by Weibull models. The root fractions from P. hastisepala presented the highest toxicity, followed by those from the branches, stems and leaves. Among fractions from P. hastisepala roots, the most toxic were a fraction that apparently is rich in lipophilic compounds and nonbasic alkaloids and a fraction that is likely rich in quaternary benzophenanthridine alkaloids, protopine alkaloids and tertiary bases. Psychotria leiocarpa fractions were not toxic to this insect. Psychotria hastisepala is potentially useful for the development of new products for A. sexdens control. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019 2020-04-24T13:23:57Z 2020-04-24T13:23:57Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
ALVES, D. S. et al. Toxicity of alkaloid fractions from Psychotria spp. (Rubiaceae) against Atta Sexdens Forel, 1908 (Hymenoptera: formicidae). Cerne, Lavras, v. 25, n. 2, p. 255-262, 2019. http://repositorio.ufla.br/jspui/handle/1/40331 |
identifier_str_mv |
ALVES, D. S. et al. Toxicity of alkaloid fractions from Psychotria spp. (Rubiaceae) against Atta Sexdens Forel, 1908 (Hymenoptera: formicidae). Cerne, Lavras, v. 25, n. 2, p. 255-262, 2019. |
url |
http://repositorio.ufla.br/jspui/handle/1/40331 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
Attribution 4.0 International http://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Attribution 4.0 International http://creativecommons.org/licenses/by/4.0/ |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Federal de Lavras |
publisher.none.fl_str_mv |
Universidade Federal de Lavras |
dc.source.none.fl_str_mv |
Cerne reponame:Repositório Institucional da UFLA instname:Universidade Federal de Lavras (UFLA) instacron:UFLA |
instname_str |
Universidade Federal de Lavras (UFLA) |
instacron_str |
UFLA |
institution |
UFLA |
reponame_str |
Repositório Institucional da UFLA |
collection |
Repositório Institucional da UFLA |
repository.name.fl_str_mv |
Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA) |
repository.mail.fl_str_mv |
nivaldo@ufla.br || repositorio.biblioteca@ufla.br |
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1807835067773353984 |