DEVELOPMENT OF Helicoverpa armigera HUBNER, 1805 AND Spodoptera frugiperda SMITH, 1797 IN WINTER FORAGES

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dc.contributor.authorFernandes, Fabricio Oliveira [UNESP]
dc.contributor.authorAbreu, Jessica Avila de
dc.contributor.authorChrist, Lucas Martins
dc.contributor.authorSchneid Afonso da Rosa, Ana Paula
dc.contributor.authorMendes, Simone Martins
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniv Fed Pelotas
dc.contributor.institutionEmpresa Brasileira de Pesquisa Agropecuária (EMBRAPA)
dc.date.accessioned2020-12-10T19:57:46Z
dc.date.available2020-12-10T19:57:46Z
dc.date.issued2020-05-01
dc.description.abstractHelicoverpa armigera Hubner, 1805 and Spodoptera frugiperda Smith, 1797 are polyphagous pests of great agricultural importance in subtropical and temperate climate regions. The usual management of production areas in the southern region of Brazil occurs after the harvesting of summer crops, and the areas are sown with pasture. Thus, forages recommended for grazing are azevem (Lolium multiflorum Lam.) and cornichdo (Lotus corniculatus L.) due to their nutritional benefits, good palatability, regrowth, and hardiness. Considering the high degree of polyphagia of H. armigera and S. frugiperda, and the impact of maintaining continuous feeding areas (green bridges) in the management of these species, this work aimed to evaluate the development of H. armigera and S. frugiperda fed leaves of azevem and cornichdo under laboratory conditions. The insects were collected in the city of Capao do Leao/RS in corn and soybean plantations. For each forage species, 130 newly hatched caterpillars were each placed in autoclaved glass tubes, with one-third of the tube length containing forage. The tubes were capped with waterproof cotton and placed in a climate-controlled room at 25 +/- 1 degrees C, 70 +/- 10% relative humidity, and a 12-h photophase. The food was replenished daily until the caterpillars entered the pupae stage. The pupae were sexed and weighed, and the newly emerged adults were placed in pairs in PVC cages, lined with white A4 sulfite paper. The papers used as a laying substrate were removed and changed daily, and eggs were counted. The number of instars was determined by the linearized Dyar rule model. The complete randomization design was employed for the variables biological cycle length and viability of egg, caterpillar, pre-pupa, pupa, adult, and pre-oviposition phases and weight of caterpillars on the 14th day and pupae after 24 h. Based on the results obtained, a fertility life table was prepared. H. armigera did not complete the cycle, with only three instars and a duration of 22.1 and 24.6 days in azevem and cornichdo, respectively. When evaluated in S. frugiperda caterpillars, development in forage species was observed, with five and six instars and duration of 51.7 and 45.1 days in azevem and cornichdo, respectively. The azevem was distinguished by interference in the development cycle of the species, reducing the effect of the green bridge. In addition, surviving insects were susceptible to the effects of the agroecosystem due to the low-quality food source.en
dc.description.affiliationPaulista State Univ Julio de Mesquita Filho, Fac Agr & Vet Sci, Crop Protect Dept, Jaboticabal, SP, Brazil
dc.description.affiliationUniv Fed Pelotas, Crop Protect Dept, Univ Campus, Capao Do Ledo, RS, Brazil
dc.description.affiliationEmbrapa Temperate Weather, Pelotas, RS, Brazil
dc.description.affiliationEmbrapa Com & Sorghum, Sete Lagoas, MG, Brazil
dc.description.affiliationUnespPaulista State Univ Julio de Mesquita Filho, Fac Agr & Vet Sci, Crop Protect Dept, Jaboticabal, SP, Brazil
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipPaulista State University Julio de Mesquita Filho
dc.description.sponsorshipFederal University of Pelotas
dc.description.sponsorshipEmbrapa Temperate Climate
dc.description.sponsorshipIdCAPES: 001
dc.format.extent844-856
dc.identifierhttp://dx.doi.org/10.14393/BJ-v36n3a2020-47782
dc.identifier.citationBioscience Journal. Uberlandia: Univ Federal Uberlandia, v. 36, n. 3, p. 844-856, 2020.
dc.identifier.doi10.14393/BJ-v36n3a2020-47782
dc.identifier.issn1981-3163
dc.identifier.urihttp://hdl.handle.net/11449/196837
dc.identifier.wosWOS:000529057300015
dc.language.isoeng
dc.publisherUniv Federal Uberlandia
dc.relation.ispartofBioscience Journal
dc.sourceWeb of Science
dc.subjectCovering plants
dc.subjectInsect resistance management
dc.subjectCultural management
dc.subjectConstitutive resistance
dc.subjectResistance of plants
dc.titleDEVELOPMENT OF Helicoverpa armigera HUBNER, 1805 AND Spodoptera frugiperda SMITH, 1797 IN WINTER FORAGESen
dc.typeArtigo
dcterms.rightsHolderUniv Federal Uberlandia

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