Data/hora: 25/06/2024 06:23:58

Biblioteca(s): | Embrapa Meio Ambiente.
Data corrente: | 02/08/2018
Data da última atualização: | 03/08/2018
Autoria: | MORALES-REYES, C.; MASCARIN, G. M.; JACKSON, M. A.; HALL, D.; SANCHEZ-PENA, S. R.; ARTHURS, S. P.
Afiliação: | CELSO MORALES-REYES, Universidad Autónoma Agraria Antonio Narro, México; GABRIEL MOURA MASCARIN, CNPMA; MARK ALAN JACKSON, USDA-ARS; DAVID HALL, USDA-ARS; SERGIO R SANCHEZ-PENA, Universidad Autónoma Agraria Antonio Narro, México; STEVEN PAUL ARTHURS, University of Florida.
Título: | Comparison of aerial conidia and blastospores from two entomopathogenic fungi against Diaphorina citri (Hemiptera: Liviidae) under laboratory and greenhouse conditions.
Ano de publicação: | 2018
Fonte/Imprenta: | Biocontrol Science and Technology, v. 28, n. 8, p. 737-749, 2018.
DOI: | https://doi.org/10.1080/09583157.2018.1487028
Idioma: | Inglês
Conteúdo: | Abstract: This study compared the insecticidal activity of liquid culture-produced blastospores and solid substrate-produced aerial conidia of Beauveria bassiana GHA and Isaria fumosorosea ARSEF3581 strains against Diaphorina citri adults. Insects exposed to 10(7) propagules/ml in a spray residue contact leaf bioassay died within 6 days at 25°C, with no significant differences between fungal treatments. At higher concentrations (10(8) propagules/ml), I. fumosorosea conidia killed psyllids faster compared to its blastospore formulation, i.e. 4 versus 5 days, respectively. In greenhouse tests, the same treatments applied to infested citrus plants (2 x 10(6) spores/ml) all significantly reduced the number of nymphs compared with the untreated controls over 3 weeks; however, only I. fumosorosea blastospores significantly reduced the number of F1 adult psyllids when compared with controls. Similar results were observed in the follow-up greenhouse test, where I. fumosorosea blastospores were the most effective treatment overall, reducing D. citri populations by about 60% after 21 days; by contrast, imidacloprid killed almost 100% of psyllids within a week in both tests. Fewer psyllids exhibited mycosis in the greenhouse (i.e. ~20 versus >- 87% in the laboratory). This is the first report comparing both conidial and blastospore formulations of B. bassiana and I. fumosorosea for the control of a psyllid pest. Field testing is required to determine how successful different spore formulations might be under various environmental conditions.
Palavras-Chave: | Residue bioassay.
Thesagro: | Beauveria Bassiana.
Thesaurus Nal: | Isaria fumosorosea; virulence.
Categoria do assunto: | --
Registro original: | Embrapa Meio Ambiente (CNPMA)
Exemplares: | CNPMA - (16162-1) - UPC - AP - DD -  -  -  - DIS