Please use this identifier to cite or link to this item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1062091
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dc.contributor.authorBENTIVENHA, J. P. F.pt_BR
dc.contributor.authorPAULA-MORAES, S. V.pt_BR
dc.contributor.authorBALDIN, E. L. L.pt_BR
dc.contributor.authorSPECHT, A.pt_BR
dc.contributor.authorSILVA, I. F. dapt_BR
dc.contributor.authorHUNT, T. E.pt_BR
dc.date.accessioned2017-01-30T11:11:11Zpt_BR
dc.date.available2017-01-30T11:11:11Zpt_BR
dc.date.created2017-01-30pt_BR
dc.date.issued2016pt_BR
dc.identifier.citationPlos One, v. 11, n. 2, e0167182, December 2016.pt_BR
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1062091pt_BR
dc.descriptionAbstract: 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.pt_BR
dc.language.isoengeng
dc.rightsopenAccesseng
dc.subjectLagarta do milhopt_BR
dc.subjectOcorrencia de larvaspt_BR
dc.subjectBrasilpt_BR
dc.subjectRio grande do sulpt_BR
dc.subjectBahiapt_BR
dc.subjectPlanaltinapt_BR
dc.titleBattle in the new world: Helicoverpa armigera versus Helicoverpa zea (Lepidoptera: Noctuidae).pt_BR
dc.typeArtigo de periódicopt_BR
dc.date.updated2017-02-08T11:11:11Zpt_BR
dc.subject.thesagroHelicoverpa Zeapt_BR
dc.subject.thesagroMilhopt_BR
dc.subject.thesagroPraga de Plantapt_BR
dc.subject.nalthesaurusHelicoverpa armigerapt_BR
riaa.ainfo.id1062091pt_BR
riaa.ainfo.lastupdate2017-02-08pt_BR
dc.contributor.institutionJOSE 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.pt_BR
Appears in Collections:Artigo em periódico indexado (CPAC)

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