Population fluctuation of Spodoptera frugiperda eggs and natural parasitism by Trichogramma in maize.

Detalhes bibliográficos
Autor(a) principal: DEQUECH, S. T. B.
Data de Publicação: 2013
Outros Autores: CAMERA, C., STURZA, V. S., RIBEIRO, L. do P., QUERINO, R. B., PONCIO, S.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)
Texto Completo: http://www.alice.cnptia.embrapa.br/alice/handle/doc/962559
Resumo: This study aimed to evaluate the fluctuation of S. frugiperda eggs and natural parasitism by Trichogramma and identify and quantify parasitoid species in maize fields in the state of Rio Grande do Sul, Brazil. Surveys were carried out in two growing seasons: in 2006/2007 we assessed one growing season (late sowing) in Santa Maria, and in 2007/2008 we assessed two growing seasons (early and late sowing) in Santa Bárbara do Sul. Daily air temperature and rainfall were recorded at both locations. In each evaluation, entire plants were examined for the presence or absence of S. frugiperda egg masses, which were analyzed for larvae hatching or parasitoid emergence. The number of S. frugiperda eggs is higher between 8 and 30 days after plant emergence, decreasing in the later stages of maize growth; the occurrence of parasitoids begins about two days after pest egg occurrence; S. frugiperda egg parasitism is low; and eggs are parasitized by Trichogramma pretiosum and Trichogramma atopovirilia, with marked predominance of the first and possible occurrence of both parasitoid species in the same egg mass.
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spelling Population fluctuation of Spodoptera frugiperda eggs and natural parasitism by Trichogramma in maize.Lagarta-do-cartuchoFall armywormControle biológicoZea maysBiological controlNoctuidaeTrichogrammatidaeThis study aimed to evaluate the fluctuation of S. frugiperda eggs and natural parasitism by Trichogramma and identify and quantify parasitoid species in maize fields in the state of Rio Grande do Sul, Brazil. Surveys were carried out in two growing seasons: in 2006/2007 we assessed one growing season (late sowing) in Santa Maria, and in 2007/2008 we assessed two growing seasons (early and late sowing) in Santa Bárbara do Sul. Daily air temperature and rainfall were recorded at both locations. In each evaluation, entire plants were examined for the presence or absence of S. frugiperda egg masses, which were analyzed for larvae hatching or parasitoid emergence. The number of S. frugiperda eggs is higher between 8 and 30 days after plant emergence, decreasing in the later stages of maize growth; the occurrence of parasitoids begins about two days after pest egg occurrence; S. frugiperda egg parasitism is low; and eggs are parasitized by Trichogramma pretiosum and Trichogramma atopovirilia, with marked predominance of the first and possible occurrence of both parasitoid species in the same egg mass.Sônia Thereza Bastos Dequech, Universidade Federal de Santa Maria; Cátia Camera, Universidade Federal de Santa Maria; Vinícius Soares Sturza, Universidade Federal de Santa Maria; Leandro do Prado Ribeiro, ESALQ; RANYSE BARBOSA QUERINO DA SILVA, CPAMN; Sônia Poncio, Universidade Federal de Santa Maria.DEQUECH, S. T. B.CAMERA, C.STURZA, V. S.RIBEIRO, L. do P.QUERINO, R. B.PONCIO, S.2013-07-22T11:11:11Z2013-07-22T11:11:11Z2013-07-2220132014-07-16T11:11:11Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleActa Scientiarum. Agronomy, Maringá, v. 35, n. 3, p. 295-300, July-Sept. 2013.1679-9275http://www.alice.cnptia.embrapa.br/alice/handle/doc/96255910.4025/actasciagron.v35i3.16769enginfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPA2017-08-16T00:14:27Zoai:www.alice.cnptia.embrapa.br:doc/962559Repositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestopendoar:21542017-08-16T00:14:27falseRepositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestcg-riaa@embrapa.bropendoar:21542017-08-16T00:14:27Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Population fluctuation of Spodoptera frugiperda eggs and natural parasitism by Trichogramma in maize.
title Population fluctuation of Spodoptera frugiperda eggs and natural parasitism by Trichogramma in maize.
spellingShingle Population fluctuation of Spodoptera frugiperda eggs and natural parasitism by Trichogramma in maize.
DEQUECH, S. T. B.
Lagarta-do-cartucho
Fall armyworm
Controle biológico
Zea mays
Biological control
Noctuidae
Trichogrammatidae
title_short Population fluctuation of Spodoptera frugiperda eggs and natural parasitism by Trichogramma in maize.
title_full Population fluctuation of Spodoptera frugiperda eggs and natural parasitism by Trichogramma in maize.
title_fullStr Population fluctuation of Spodoptera frugiperda eggs and natural parasitism by Trichogramma in maize.
title_full_unstemmed Population fluctuation of Spodoptera frugiperda eggs and natural parasitism by Trichogramma in maize.
title_sort Population fluctuation of Spodoptera frugiperda eggs and natural parasitism by Trichogramma in maize.
author DEQUECH, S. T. B.
author_facet DEQUECH, S. T. B.
CAMERA, C.
STURZA, V. S.
RIBEIRO, L. do P.
QUERINO, R. B.
PONCIO, S.
author_role author
author2 CAMERA, C.
STURZA, V. S.
RIBEIRO, L. do P.
QUERINO, R. B.
PONCIO, S.
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Sônia Thereza Bastos Dequech, Universidade Federal de Santa Maria; Cátia Camera, Universidade Federal de Santa Maria; Vinícius Soares Sturza, Universidade Federal de Santa Maria; Leandro do Prado Ribeiro, ESALQ; RANYSE BARBOSA QUERINO DA SILVA, CPAMN; Sônia Poncio, Universidade Federal de Santa Maria.
dc.contributor.author.fl_str_mv DEQUECH, S. T. B.
CAMERA, C.
STURZA, V. S.
RIBEIRO, L. do P.
QUERINO, R. B.
PONCIO, S.
dc.subject.por.fl_str_mv Lagarta-do-cartucho
Fall armyworm
Controle biológico
Zea mays
Biological control
Noctuidae
Trichogrammatidae
topic Lagarta-do-cartucho
Fall armyworm
Controle biológico
Zea mays
Biological control
Noctuidae
Trichogrammatidae
description This study aimed to evaluate the fluctuation of S. frugiperda eggs and natural parasitism by Trichogramma and identify and quantify parasitoid species in maize fields in the state of Rio Grande do Sul, Brazil. Surveys were carried out in two growing seasons: in 2006/2007 we assessed one growing season (late sowing) in Santa Maria, and in 2007/2008 we assessed two growing seasons (early and late sowing) in Santa Bárbara do Sul. Daily air temperature and rainfall were recorded at both locations. In each evaluation, entire plants were examined for the presence or absence of S. frugiperda egg masses, which were analyzed for larvae hatching or parasitoid emergence. The number of S. frugiperda eggs is higher between 8 and 30 days after plant emergence, decreasing in the later stages of maize growth; the occurrence of parasitoids begins about two days after pest egg occurrence; S. frugiperda egg parasitism is low; and eggs are parasitized by Trichogramma pretiosum and Trichogramma atopovirilia, with marked predominance of the first and possible occurrence of both parasitoid species in the same egg mass.
publishDate 2013
dc.date.none.fl_str_mv 2013-07-22T11:11:11Z
2013-07-22T11:11:11Z
2013-07-22
2013
2014-07-16T11:11:11Z
dc.type.driver.fl_str_mv info:eu-repo/semantics/publishedVersion
info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv Acta Scientiarum. Agronomy, Maringá, v. 35, n. 3, p. 295-300, July-Sept. 2013.
1679-9275
http://www.alice.cnptia.embrapa.br/alice/handle/doc/962559
10.4025/actasciagron.v35i3.16769
identifier_str_mv Acta Scientiarum. Agronomy, Maringá, v. 35, n. 3, p. 295-300, July-Sept. 2013.
1679-9275
10.4025/actasciagron.v35i3.16769
url http://www.alice.cnptia.embrapa.br/alice/handle/doc/962559
dc.language.iso.fl_str_mv eng
language eng
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dc.source.none.fl_str_mv reponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)
instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron:EMBRAPA
instname_str Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
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