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Registro Completo |
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
30/01/2017 |
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Data da última atualização: |
08/02/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
BENTIVENHA, J. P. F.; PAULA-MORAES, S. V.; BALDIN, E. L. L.; SPECHT, A.; SILVA, I. F. da; HUNT, T. E. |
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Afiliação: |
JOSE P. F. BENTIVENHA, ESALQ, USP; SILVANA V. PAULA-MORAES, UNIVERSITY OF FLORIDA; EDSON L. L. BALDIN, UNIVERSIDADE ESTADUAL DE SAO PAULO; ALEXANDRE SPECHT, CPAC; IVANA F. da SILVA, USP; THOMAS E. HUNT, UNIVERSITY OF NEBRASKA. |
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Título: |
Battle in the new world: Helicoverpa armigera versus Helicoverpa zea (Lepidoptera: Noctuidae). |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
Plos One, v. 11, n. 2, e0167182, December 2016. |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: The corn earworm Helicoverpa zea (Boddie) and the old world bollworm Helicoverpa armigera (Hubner) (Lepidoptera: Noctuidae) are allopatric species and occur in important agricultural crops. In maize, both species tend to infest the ear. The introduction of H. armigera in Brazil has created a new scenario, where these Helicoverpa species might cohabit and interact with one another, affecting the prevalence of each species in the agroecosystem, integrated pest management, and insect resistance management. In this study, larval occurrence and proportion of these species in maize was assessed in three regions of Brazil during three crop seasons. Interaction between the species was evaluated in interspecific and intraspecific scenarios under laboratory and field conditions. Helicoverpa zea was predominant in Rio Grande do Sul and the Planaltina, DF (central Brazil). In western Bahia, H. zea was predominant in the first collection, but approximately equal in number to H armigera in the second crop season. Both species exhibit high cannibalism/predation rates, and larval size was the primary factor for larval survival in the interaction studies. Larva of H. zea had higher survival when interacting with H. armigera, indicating that H. zea has an advantage in intraguild interactions with H. armigera in maize. Overall, the results from this study indicate that maize might play a role as a source of infestation or a sink of insecticide or Bt protein unselected H. armigera populations, depending on the H. zea: H. armigera intraguild competition and adult movement in the landscape. MenosAbstract: The corn earworm Helicoverpa zea (Boddie) and the old world bollworm Helicoverpa armigera (Hubner) (Lepidoptera: Noctuidae) are allopatric species and occur in important agricultural crops. In maize, both species tend to infest the ear. The introduction of H. armigera in Brazil has created a new scenario, where these Helicoverpa species might cohabit and interact with one another, affecting the prevalence of each species in the agroecosystem, integrated pest management, and insect resistance management. In this study, larval occurrence and proportion of these species in maize was assessed in three regions of Brazil during three crop seasons. Interaction between the species was evaluated in interspecific and intraspecific scenarios under laboratory and field conditions. Helicoverpa zea was predominant in Rio Grande do Sul and the Planaltina, DF (central Brazil). In western Bahia, H. zea was predominant in the first collection, but approximately equal in number to H armigera in the second crop season. Both species exhibit high cannibalism/predation rates, and larval size was the primary factor for larval survival in the interaction studies. Larva of H. zea had higher survival when interacting with H. armigera, indicating that H. zea has an advantage in intraguild interactions with H. armigera in maize. Overall, the results from this study indicate that maize might play a role as a source of infestation or a sink of insecticide or Bt protein unselected H. armigera pop... Mostrar Tudo |
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Palavras-Chave: |
Bahia; Brasil; Lagarta do milho; Ocorrencia de larvas; Planaltina; Rio grande do sul. |
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Thesagro: |
Helicoverpa Zea; Milho; Praga de Planta. |
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Thesaurus Nal: |
Helicoverpa armigera. |
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Categoria do assunto: |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/154216/1/journal.pone.0167182.pdf
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Marc: |
LEADER 02455naa a2200301 a 4500
001 2062091
005 2017-02-08
008 2016 bl uuuu u00u1 u #d
100 1 $aBENTIVENHA, J. P. F.
245 $aBattle in the new world$bHelicoverpa armigera versus Helicoverpa zea (Lepidoptera: Noctuidae).$h[electronic resource]
260 $c2016
520 $aAbstract: The corn earworm Helicoverpa zea (Boddie) and the old world bollworm Helicoverpa armigera (Hubner) (Lepidoptera: Noctuidae) are allopatric species and occur in important agricultural crops. In maize, both species tend to infest the ear. The introduction of H. armigera in Brazil has created a new scenario, where these Helicoverpa species might cohabit and interact with one another, affecting the prevalence of each species in the agroecosystem, integrated pest management, and insect resistance management. In this study, larval occurrence and proportion of these species in maize was assessed in three regions of Brazil during three crop seasons. Interaction between the species was evaluated in interspecific and intraspecific scenarios under laboratory and field conditions. Helicoverpa zea was predominant in Rio Grande do Sul and the Planaltina, DF (central Brazil). In western Bahia, H. zea was predominant in the first collection, but approximately equal in number to H armigera in the second crop season. Both species exhibit high cannibalism/predation rates, and larval size was the primary factor for larval survival in the interaction studies. Larva of H. zea had higher survival when interacting with H. armigera, indicating that H. zea has an advantage in intraguild interactions with H. armigera in maize. Overall, the results from this study indicate that maize might play a role as a source of infestation or a sink of insecticide or Bt protein unselected H. armigera populations, depending on the H. zea: H. armigera intraguild competition and adult movement in the landscape.
650 $aHelicoverpa armigera
650 $aHelicoverpa Zea
650 $aMilho
650 $aPraga de Planta
653 $aBahia
653 $aBrasil
653 $aLagarta do milho
653 $aOcorrencia de larvas
653 $aPlanaltina
653 $aRio grande do sul
700 1 $aPAULA-MORAES, S. V.
700 1 $aBALDIN, E. L. L.
700 1 $aSPECHT, A.
700 1 $aSILVA, I. F. da
700 1 $aHUNT, T. E.
773 $tPlos One$gv. 11, n. 2, e0167182, December 2016.
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Embrapa Cerrados (CPAC) |
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| 1. |  | PAULA, A. M.; CUTRIN, A. O.; VASCONCELOS, T. N. N.; SOARES, C. R. A.; SERGIO, E. C.; PINTO, L. P.; MONTEIRO, J. R. B.; BORGES, L. K.; TONELLO, V. M.; DANTAS, M. Biomassa e nutrientes de raizes em floresta aberta e capoeira no norte do Mato Grosso. In: CONGRESSO DE ECOLOGIA DO BRASIL, 3., 1996, Brasilia. Manejo de ecossistemas e mudancas globais: resumos. Brasilia: Universidade de Brasilia, 1996. p.72-73.| Biblioteca(s): Embrapa Pantanal. |
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