Encapsulation of entomopathogenic fungal conidia: evaluation of stability and control potential of Rhipicephalus microplus

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.contributorFederal Rural University of Rio de Janeiro-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatorMeirelles, Laura Nobrega-
Autor(es): dc.creatorMesquita, Emily-
Autor(es): dc.creatorCorrêa, Thaís Almeida-
Autor(es): dc.creatorBitencourt, Ricardo de Oliveira Barbosa-
Autor(es): dc.creatorOliveira, Jhones Luiz-
Autor(es): dc.creatorFraceto, Leonardo Fernandes-
Autor(es): dc.creatorCamargo, Mariana Guedes-
Autor(es): dc.creatorBittencourt, Vânia Rita Elias Pinheiro-
Data de aceite: dc.date.accessioned2025-08-21T18:49:37Z-
Data de disponibilização: dc.date.available2025-08-21T18:49:37Z-
Data de envio: dc.date.issued2023-07-29-
Data de envio: dc.date.issued2023-07-29-
Data de envio: dc.date.issued2023-07-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.ttbdis.2023.102184-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/248738-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/248738-
Descrição: dc.descriptionThe use of chemical acaricides is the primary strategy to control tick infestations. Nonetheless, chemical resistance in ticks has been reported. Thus, complementary methods such as biological control using entomopathogenic fungi (EPF) have been investigated. EPF, although efficient, have their viability compromised when applied under natural conditions, which indicates that formulation development is essential. Some researchers have demonstrated the efficacy of ionic gelation in protecting EPF against deleterious abiotic factors. In the present study, we conducted the ionic gelation technique to encapsulate Metarhizium anisopliae (Metschn.) Sorokin (Hypocreales: Clavicipitaceae) conidia in 2% (EC 2%) and 3% (EC 3%) sodium alginate. Next, the quantity and viability of encapsulated conidia (EC) were determined. The morphology of particles was characterized by using Scanning Electron Microscopy (SEM). EC and non-encapsulated conidia (NEC) were stored at room temperature (26.8 °C) and in the freezer (-11.9 °C) to shelf-life testing. For UV-B irradiance tolerance and thermotolerance tests, EC and NEC were exposed to UV-B (6.0 or 8.0 kJ m − 2) and heat (42 ºC). In addition, biological parameters of Rhipicephalus microplus Canestrini (Acari: Ixodidae) engorged females exposed to EC were evaluated. The particles presented a spherical shape, more homogeneous (EC 2%) or heterogeneous (EC 3%). Encapsulation decreased (4.8×) the conidial concentration and did not affect their viability. On the other hand, encapsulation increased the shelf life of conidia at room temperature as well as their UV-B tolerance and thermotolerance (6 h). The fungal particles decreased the biological parameters of females more significantly than the NEC. As far as we know, we reported for the first time the use of the ionic gelation to encapsulate entomopathogenic fungi toward controlling R. microplus.-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ)-
Descrição: dc.descriptionProgram in Veterinary Sciences Veterinary Institute Federal Rural University of Rio de Janeiro, Rodovia BR 465, s/n, RJ-
Descrição: dc.descriptionEnvironmental Nanotechnology Laboratory Institute of Science and Technology of Sorocaba São Paulo State University, Av. Três de Março, 511 - Alto da Boa Vista, SP-
Descrição: dc.descriptionDepartment of Animal Parasitology Veterinary Institute Federal Rural University of Rio de Janeiro, Rodovia BR 465, s/n, RJ-
Descrição: dc.descriptionEnvironmental Nanotechnology Laboratory Institute of Science and Technology of Sorocaba São Paulo State University, Av. Três de Março, 511 - Alto da Boa Vista, SP-
Descrição: dc.descriptionFAPESP: 2018/21142-1-
Descrição: dc.descriptionCNPq: CNPq - 308439/2021-0-
Descrição: dc.descriptionFAPERJ: E-26/202.957/2017-
Descrição: dc.descriptionFAPESP: FAPESP #2017/21004-5-
Descrição: dc.descriptionCNPq: Project 302985/2019-0-
Idioma: dc.languageen-
Relação: dc.relationTicks and Tick-borne Diseases-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectBiological control-
Palavras-chave: dc.subjectCattle tick-
Palavras-chave: dc.subjectIonic gelation-
Palavras-chave: dc.subjectMetarhizium anisopliae-
Palavras-chave: dc.subjectSodium alginate-
Título: dc.titleEncapsulation of entomopathogenic fungal conidia: evaluation of stability and control potential of Rhipicephalus microplus-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

Não existem arquivos associados a este item.