Dissertação

Toxicidade do extrato de Derris Amazonica Killip a adultos de Cerotoma Arcuatus Olivier, 1791 (Coleoptera: Chrysomelidae)

The abundance and recognized insecticidal activity of Derris amazonica in addition to the need of controlling Cerotoma arcuatus led to the present study, whose objective was to assess the toxicity of the extract of D. amazonica to adults of C. arcuatus. The concentration-response bioassays were carr...

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Autor principal: Alecio, Marcio Rodrigo
Grau: Dissertação
Idioma: por
Publicado em: Instituto Nacional de Pesquisas da Amazônia - INPA 2020
Assuntos:
Timbó
Inseticida botânico
Vaquinha-do-feijoeiro
Rotenona
Acesso em linha: https://repositorio.inpa.gov.br/handle/1/5273
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4702747D8
id oai:repositorio:1-5273
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spelling oai:repositorio:1-5273 Toxicidade do extrato de Derris Amazonica Killip a adultos de Cerotoma Arcuatus Olivier, 1791 (Coleoptera: Chrysomelidae) Alecio, Marcio Rodrigo Netto, Rosalee Albuquerque Coelho Fazolin, Murilo Timbó Inseticida botânico Vaquinha-do-feijoeiro Rotenona The abundance and recognized insecticidal activity of Derris amazonica in addition to the need of controlling Cerotoma arcuatus led to the present study, whose objective was to assess the toxicity of the extract of D. amazonica to adults of C. arcuatus. The concentration-response bioassays were carried out using three distends methodologies Ingestion of treated leaves, contact in treated surface (filter paper) and topical application. Mortality and leaf consumption results were subjected to regression analyses and probit analyses was used to estimate the median lethal values (i.e., LC50, LT50 and LD50). The extract of D. amazonica contains 3.7% of rotenone and was toxic to C. arcuatus when exposed to treated leaves (LC50 = 15.14 μl.ml-1), treated surface (LC50 = 0.45 μl.cm-2) or subjected to topical exposure (LD50 = 1.44 μl.g-1). Mortality levels higher than 80% and lower times were obtained with 5% (v.v-1) of the extract. Leaf consumption by C. arcuatus in the leaf-ingestion bioassay was smaller than in the topical bioassay. In both cases though higher extract concentration led to lower leaf consumption with phagoinhibition taking place at concentrations as low as leaf 1% (v.v-1). The extract of D. amazonica was toxic to C. arcuatus and inhibit its feeding with higher efficiency with ingestion of treated leaves. A abundância e a reconhecida atividade inseticida de Derris amazonica e a necessidade de controle de Cerotoma arcuatus estimularam a realização deste estudo, que teve como objetivo determinar a toxicidade do extrato de D. amazonica a adultos de C. arcuatus. Os bioensaios foram desenvolvidos pelas vias de intoxicação de ingestão de folhas tratadas, contato em superfície tratada (papel-filtro) e contato por aplicação tópica. Os valores de mortalidade e de consumo foliar dos insetos foram submetidos à análise de regressão e, para determinação das CL50, da DL50 e dos TL50, foi utilizada a análise de Probit. O extrato de D. amazônica, contendo 3,7% de rotenona, é tóxico para C. arcuatus via ingestão de folhas tratadas (CL50 = 15,14 μl do extrato.ml-1 de água), superfície tratada (CL50 = 0,45 μl do extrato.cm-2) e aplicação tópica (DL50 = 1,44 μl do extrato.g-1 do inseto). Mortalidades superiores a 80% dos insetos e os menores tempos letais médios foram obtidos pela concentração de 5% (v.v-1) do extrato, em todos os bioensaios. Os valores de consumo foliar efetuado por C. arcuatus no bioensaio de ingestão de folhas tratadas foram menores que os obtidos, para as mesmas concentrações do produto, por aplicação tópica. Em ambos os bioensaios, quanto maior a concentração extrato, menor foi o valor médio de consumo foliar dos insetos, sendo que, inibição da alimentação dos indivíduos foi observada a partir da concentração de 1%. O extrato de D. amazonica é tóxico para C. arcuatus e inibe a alimentação dos insetos, sendo a intoxicação por ingestão de folhas tratadas a via mais efetiva. 2020-01-20T20:03:37Z 2020-01-20T20:03:37Z 2007-07-20 Dissertação https://repositorio.inpa.gov.br/handle/1/5273 http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4702747D8 por Attribution-NonCommercial-NoDerivs 3.0 Brazil http://creativecommons.org/licenses/by-nc-nd/3.0/br/ application/pdf Instituto Nacional de Pesquisas da Amazônia - INPA Agricultura no Trópico Úmido - ATU
institution Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional
collection INPA-RI
language por
topic Timbó
Inseticida botânico
Vaquinha-do-feijoeiro
Rotenona
spellingShingle Timbó
Inseticida botânico
Vaquinha-do-feijoeiro
Rotenona
Alecio, Marcio Rodrigo
Toxicidade do extrato de Derris Amazonica Killip a adultos de Cerotoma Arcuatus Olivier, 1791 (Coleoptera: Chrysomelidae)
topic_facet Timbó
Inseticida botânico
Vaquinha-do-feijoeiro
Rotenona
description The abundance and recognized insecticidal activity of Derris amazonica in addition to the need of controlling Cerotoma arcuatus led to the present study, whose objective was to assess the toxicity of the extract of D. amazonica to adults of C. arcuatus. The concentration-response bioassays were carried out using three distends methodologies Ingestion of treated leaves, contact in treated surface (filter paper) and topical application. Mortality and leaf consumption results were subjected to regression analyses and probit analyses was used to estimate the median lethal values (i.e., LC50, LT50 and LD50). The extract of D. amazonica contains 3.7% of rotenone and was toxic to C. arcuatus when exposed to treated leaves (LC50 = 15.14 μl.ml-1), treated surface (LC50 = 0.45 μl.cm-2) or subjected to topical exposure (LD50 = 1.44 μl.g-1). Mortality levels higher than 80% and lower times were obtained with 5% (v.v-1) of the extract. Leaf consumption by C. arcuatus in the leaf-ingestion bioassay was smaller than in the topical bioassay. In both cases though higher extract concentration led to lower leaf consumption with phagoinhibition taking place at concentrations as low as leaf 1% (v.v-1). The extract of D. amazonica was toxic to C. arcuatus and inhibit its feeding with higher efficiency with ingestion of treated leaves.
author_additional Netto, Rosalee Albuquerque Coelho
author_additionalStr Netto, Rosalee Albuquerque Coelho
format Dissertação
author Alecio, Marcio Rodrigo
title Toxicidade do extrato de Derris Amazonica Killip a adultos de Cerotoma Arcuatus Olivier, 1791 (Coleoptera: Chrysomelidae)
title_short Toxicidade do extrato de Derris Amazonica Killip a adultos de Cerotoma Arcuatus Olivier, 1791 (Coleoptera: Chrysomelidae)
title_full Toxicidade do extrato de Derris Amazonica Killip a adultos de Cerotoma Arcuatus Olivier, 1791 (Coleoptera: Chrysomelidae)
title_fullStr Toxicidade do extrato de Derris Amazonica Killip a adultos de Cerotoma Arcuatus Olivier, 1791 (Coleoptera: Chrysomelidae)
title_full_unstemmed Toxicidade do extrato de Derris Amazonica Killip a adultos de Cerotoma Arcuatus Olivier, 1791 (Coleoptera: Chrysomelidae)
title_sort toxicidade do extrato de derris amazonica killip a adultos de cerotoma arcuatus olivier, 1791 (coleoptera: chrysomelidae)
publisher Instituto Nacional de Pesquisas da Amazônia - INPA
publishDate 2020
url https://repositorio.inpa.gov.br/handle/1/5273
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4702747D8
_version_ 1787141735186432000
score 11.755432

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