Damages caused by larvae and adults of Diabrotica speciosa (Coleoptera: Chrysomelidae) in corn

Detalhes bibliográficos
Autor(a) principal: Marques, Gilberto Batista Castor
Data de Publicação: 1999
Outros Autores: Ávila, Crébio José, Parra, José Roberto Postali
Tipo de documento: Artigo
Idioma: por
Título da fonte: Pesquisa Agropecuária Brasileira (Online)
Texto Completo: https://seer.sct.embrapa.br/index.php/pab/article/view/5525
Resumo: Diabrotica speciosa (Germar, 1824) is traditionally a polyphagous pest during the adult phase although with some preference for bean and soybean leaves. In the past years, however, the larval phase of this chrysomelid achieved the pest status likewise other species of the genus in the USA causing severe damages to the root system of corn. The aim of this research was to evaluate the damages caused by different population levels of D. speciosa to corn roots and by adults to corn, soybean, bean and rice leaves. A significant decrease in the dry weight of corn roots, in the dry weight of the upper part, and in plant height in comparison with the control plant was observed even in small larvae population densities. The economic threshold level was less than 40 larvae per plant. The adults had significant preference for bean and soybean leaves while corn and rice were less consumed.
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spelling Damages caused by larvae and adults of Diabrotica speciosa (Coleoptera: Chrysomelidae) in cornDanos causados por larvas e adultos de Diabrotica speciosa (Coleoptera: Chrysomelidae) em milhocorn rootworm; corn pest; ecology; behavior; hostsvaquinha; praga de milho; ecologia; comportamento; hospedeirosDiabrotica speciosa (Germar, 1824) is traditionally a polyphagous pest during the adult phase although with some preference for bean and soybean leaves. In the past years, however, the larval phase of this chrysomelid achieved the pest status likewise other species of the genus in the USA causing severe damages to the root system of corn. The aim of this research was to evaluate the damages caused by different population levels of D. speciosa to corn roots and by adults to corn, soybean, bean and rice leaves. A significant decrease in the dry weight of corn roots, in the dry weight of the upper part, and in plant height in comparison with the control plant was observed even in small larvae population densities. The economic threshold level was less than 40 larvae per plant. The adults had significant preference for bean and soybean leaves while corn and rice were less consumed.A espécie Diabrotica speciosa (Germar, 1824) é, tradicionalmente, na fase adulta, uma praga polífaga, embora apresente certa preferência por folhas do feijoeiro e soja. Entretanto, nos últimos anos, a fase de larva deste crisomelídeo adquiriu o status de praga, à semelhança de outras espécies do mesmo gênero nos EUA, causando consideráveis danos ao sistema radicular do milho. O objetivo da pesquisa foi avaliar os danos causados por diferentes níveis populacionais de larvas de D. speciosa às raízes de milho, e, pelos adultos às folhas de milho, soja, feijoeiro e arroz. Desde as menores densidades populacionais de larvas, houve redução significativa no peso seco das raízes do milho, peso seco da parte aérea e na altura das plantas em relação à testemunha. Constatou-se que o nível de controle está aquém de 40 larvas por planta. Os adultos tiveram significativa preferência por folhas do feijoeiro e soja, sendo o milho e o arroz menos consumidos.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraMarques, Gilberto Batista CastorÁvila, Crébio JoséParra, José Roberto Postali1999-11-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/5525Pesquisa Agropecuaria Brasileira; v.34, n.11, nov. 1999; 1983-1986Pesquisa Agropecuária Brasileira; v.34, n.11, nov. 1999; 1983-19861678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/5525/2716info:eu-repo/semantics/openAccess2010-07-07T17:31:52Zoai:ojs.seer.sct.embrapa.br:article/5525Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2010-07-07T17:31:52Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Damages caused by larvae and adults of Diabrotica speciosa (Coleoptera: Chrysomelidae) in corn
Danos causados por larvas e adultos de Diabrotica speciosa (Coleoptera: Chrysomelidae) em milho
title Damages caused by larvae and adults of Diabrotica speciosa (Coleoptera: Chrysomelidae) in corn
spellingShingle Damages caused by larvae and adults of Diabrotica speciosa (Coleoptera: Chrysomelidae) in corn
Marques, Gilberto Batista Castor
corn rootworm; corn pest; ecology; behavior; hosts
vaquinha; praga de milho; ecologia; comportamento; hospedeiros
title_short Damages caused by larvae and adults of Diabrotica speciosa (Coleoptera: Chrysomelidae) in corn
title_full Damages caused by larvae and adults of Diabrotica speciosa (Coleoptera: Chrysomelidae) in corn
title_fullStr Damages caused by larvae and adults of Diabrotica speciosa (Coleoptera: Chrysomelidae) in corn
title_full_unstemmed Damages caused by larvae and adults of Diabrotica speciosa (Coleoptera: Chrysomelidae) in corn
title_sort Damages caused by larvae and adults of Diabrotica speciosa (Coleoptera: Chrysomelidae) in corn
author Marques, Gilberto Batista Castor
author_facet Marques, Gilberto Batista Castor
Ávila, Crébio José
Parra, José Roberto Postali
author_role author
author2 Ávila, Crébio José
Parra, José Roberto Postali
author2_role author
author
dc.contributor.none.fl_str_mv

dc.contributor.author.fl_str_mv Marques, Gilberto Batista Castor
Ávila, Crébio José
Parra, José Roberto Postali
dc.subject.por.fl_str_mv corn rootworm; corn pest; ecology; behavior; hosts
vaquinha; praga de milho; ecologia; comportamento; hospedeiros
topic corn rootworm; corn pest; ecology; behavior; hosts
vaquinha; praga de milho; ecologia; comportamento; hospedeiros
description Diabrotica speciosa (Germar, 1824) is traditionally a polyphagous pest during the adult phase although with some preference for bean and soybean leaves. In the past years, however, the larval phase of this chrysomelid achieved the pest status likewise other species of the genus in the USA causing severe damages to the root system of corn. The aim of this research was to evaluate the damages caused by different population levels of D. speciosa to corn roots and by adults to corn, soybean, bean and rice leaves. A significant decrease in the dry weight of corn roots, in the dry weight of the upper part, and in plant height in comparison with the control plant was observed even in small larvae population densities. The economic threshold level was less than 40 larvae per plant. The adults had significant preference for bean and soybean leaves while corn and rice were less consumed.
publishDate 1999
dc.date.none.fl_str_mv 1999-11-01
dc.type.none.fl_str_mv
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/5525
url https://seer.sct.embrapa.br/index.php/pab/article/view/5525
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/5525/2716
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuária Brasileira
publisher.none.fl_str_mv Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuária Brasileira
dc.source.none.fl_str_mv Pesquisa Agropecuaria Brasileira; v.34, n.11, nov. 1999; 1983-1986
Pesquisa Agropecuária Brasileira; v.34, n.11, nov. 1999; 1983-1986
1678-3921
0100-104x
reponame:Pesquisa Agropecuária Brasileira (Online)
instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron:EMBRAPA
instname_str Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron_str EMBRAPA
institution EMBRAPA
reponame_str Pesquisa Agropecuária Brasileira (Online)
collection Pesquisa Agropecuária Brasileira (Online)
repository.name.fl_str_mv Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
repository.mail.fl_str_mv pab@sct.embrapa.br || sct.pab@embrapa.br
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