Data/hora: 11/06/2024 01:39:33

Biblioteca(s): | Embrapa Meio Ambiente.
Data corrente: | 29/07/2020
Data da última atualização: | 30/07/2020
Autoria: | MUNIZ, E. R.; BEDINI, S.; SARROCCO, S.; VANNACCI, G.; MASCARIN, G. M.; FERNANDES, E. K. K.; CONTI, B.
Afiliação: | ELEN REGOZINO MUNIZ, UFG; STEFANO BEDINI, Universitá di Pisa; SABRINA SARROCCO, Universitá di Pisa; GIOVANNI VANNACCI, Universitá di Pisa; GABRIEL MOURA MASCARIN, CNPMA; ÉVERTON KORT KAMP FERNANDES, UFG; BARBARA CONTI, Universitá di Pisa.
Título: | Carnauba wax enhances the insecticidal activity of entomopathogenic fungi against the blowfly Lucilia sericata (Diptera: Calliphoridae).
Ano de publicação: | 2020
Fonte/Imprenta: | Journal of Invertebrate Pathology, v. 174, 2020. Article 107391.
DOI: | https://doi.org/10.1016/j.jip.2020.107391
Idioma: | Inglês
Conteúdo: | Abstract: Blowfly, Lucilia sericata (Diptera: Calliphoridae), is a problematic synanthropic insect pest, a vector of microbial pathogens, and the causal agent of secondary myasis. Fungal biopesticides are considered eco-friendly tools, alternative to synthetic pesticides, for the control of arthropod pests; however, to date, little is known about their bioactivity against blowflies. In this study, we assessed the insecticidal activity of three well-known entomopathogenic fungi, Beauveria bassiana, Beauveria pseudobassiana and Akanthomyces muscarius against L. sericata. In addition, we tested powdered carnauba wax as an electrically charged dust carrier in an attempt to enhance the virulence of fungal spores. Pathogenicity tests on adult flies, by adult immersion in conidial suspension (108 conidia mL-1), showed that the median lethal time (LT50) was 5.3, 5.9, and 6.2 days for B. bassiana, A. muscarius and B. pseudobassiana, respectively. In topical tests, when 108 dry conidia were mixed with or without carnauba wax, the LT50 was 7.7, 10.2, and 14 days without this carrier and 6.9, 8.6, and 13.8 days with it for B. bassiana, B. pseudobassiana and A. muscarius, respectively. Overall, our findings showed that, among the tested fungi, B. bassiana was the most virulent when formulated as a dry powder with carnauba wax, which greatly improved fungal efficacy against the blowfly. We discuss the utility of carnauba wax for electrostatic formulation powder of fungal spores in the integrated management of blowflies as an environmentally sustainable tool to reduce the over-reliance on chemical insecticides and their risk of resistance.
Palavras-Chave: | Akanthomyces muscarius; Beauveria pseudobassiana; Electrostatic powder.
Thesagro: | Beauveria Bassiana; Controle Biológico; Fungo Para Controle Biológico; Macaúba; Mosca Varejeira.
Thesaurus Nal: | Biological control agents; Carnauba wax; Dust formulations; Entomopathogenic fungi; Lucilia sericata.
Categoria do assunto: | H Saúde e Patologia
Registro original: | Embrapa Meio Ambiente (CNPMA)
Exemplares: | CNPMA - (16790-1) - UPC - AP - DD -  -  -  - DIS