Toxicity of Bacillus thuringiensis at different larval ages of Agrotis ipsilon (Lepidoptera: Noctuidae)

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dc.contributor.authorKaiser, Ingrid Schimidt
dc.contributor.authorLima, Victor Luiz Souza
dc.contributor.authorPratissoli, Dirceu
dc.contributor.authorMachado, Lorena Contarini
dc.contributor.authorde Freitas Bueno, Regiane Cristina Oliveira [UNESP]
dc.contributor.institutionUniversidade Federal do Espírito Santo (UFES)
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.date.accessioned2022-04-28T19:28:39Z
dc.date.available2022-04-28T19:28:39Z
dc.date.issued2020-01-01
dc.description.abstractThe black cutworm Agrotis ipsilon (Hufnagel) (Lepidoptera: Noctuidae) is a cosmopolitan and polyphagous pest that attacks diverse crops and weed. One of the alternatives to insecticides may be the use of bioinsecticides based on Bacillus thuringiensis Berliner (Bt). Thus, the objective of the present study were evaluating the toxicity of Agree® and Dipel® bioinsecticides based on Bt on different larval ages of A. ipsilon. For the experiments, five larval ages were used (0-24, 48-72, 96-120, 144-168, and 192-216 h). The A. ipsilon caterpillars were individualized in acrylic tubes containing an artificial diet and 50 µL of each biopesticide in the concentration 1 × 108 spores mL-1. Mortality was assessed for seven days. The two bioinsecticides evaluated promoted mortality at all larval ages of A. ipsilon. The age of 0-24 h had mortality above 90%. The values of LC50 and LC90 were 9.8 × 105 and 7.4 × 106 spores mL-1 for Agree® and 1.3 × 106 e 1.4 × 107 spores mL-1 for Dipel®, respectively, without difference between LC50 and LC90 values of the bioinsecticides. The results indicate that younger caterpillars are more susceptible to Bt-based bioinsecticides.en
dc.description.affiliationUniversidade Federal do Espírito Santo
dc.description.affiliationUniversidade Estadual Paulista
dc.description.affiliationUnespUniversidade Estadual Paulista
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.format.extent118-121
dc.identifierhttp://dx.doi.org/10.5965/223811711912020118
dc.identifier.citationRevista de Ciencias Agroveterinarias, v. 19, n. 1, p. 118-121, 2020.
dc.identifier.doi10.5965/223811711912020118
dc.identifier.issn2238-1171
dc.identifier.issn1676-9732
dc.identifier.scopus2-s2.0-85085298180
dc.identifier.urihttp://hdl.handle.net/11449/221482
dc.language.isoeng
dc.relation.ispartofRevista de Ciencias Agroveterinarias
dc.sourceScopus
dc.subjectBioinsecticide
dc.subjectBiological control
dc.subjectBlack cutworm
dc.subjectLethal concentration
dc.subjectMicrobial control
dc.titleToxicity of Bacillus thuringiensis at different larval ages of Agrotis ipsilon (Lepidoptera: Noctuidae)en
dc.titleToxicidade de Bacillus thuringiensis a diferentes idades de lagartas de Agrotis ipsilon (Lepidoptera: Noctuidae)pt
dc.typeArtigo

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