Innovative granular formulation of Metarhizium robertsii microsclerotia and blastospores for cattle tick control

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dc.creatorMarciano, Allan Felipe
dc.creatorMascarin, Gabriel Moura
dc.creatorFranco, Renato Felipe Ferreira
dc.creatorGolo, Patrícia Silva
dc.creatorJaronski, Stefan T.
dc.creatorFernandes, Éverton Kort Kamp
dc.creatorBittencourt, Vânia Rita Elias Pinheiro
dc.date.accessioned2025-01-07T15:50:37Z
dc.date.available2025-01-07T15:50:37Z
dc.date.issued2021
dc.description.abstractThe tick Rhipicephalus microplus poses a serious threat to the cattle industry, resulting in economic losses aggravated by tick resistance to chemical acaricides. Strains of Metarhizium spp., a well-known group of entomopathogenic fungi, can contribute to managing this ectoparasite. We explored two novel granular, microsclerotia- or blastospores-based formulations of Metarhizium robertsii for R. microplus control under semi-feld conditions. Fungal persistence in soil was also observed for 336 days. The experiment used pots of Urochloa decumbens cv. Basilisk grass, treated with 0.25 or 0.5 mg of granular formulation/cm2 (25 or 50 kg/ha) applied to the soil surface prior to transferring engorged tick females onto the treated soil. The fungal granules yielded more conidia with subsequent sporulation under controlled indoor conditions than in the outdoor environment, where the levels of fungus rapidly declined over time. Metarhizium-root colonization ranged from 25 to 66.7% depending on the propagule and rate. Fungal formulations signifcantly reduced the number of tick larvae during the humid season, reaching at least 64.8% relative efcacy. Microsclerotia or blastospores-granular formulations of M. robertsii can reduce the impact of R. microplus, and thus prove to be a promising tool in the control of ticks.
dc.identifier.citationMARCIANO, Allan Felipe et al. Innovative granular formulation of Metarhizium robertsii microsclerotia and blastospores for cattle tick control. Scientific Reports, London, v. 11, n. 1, e4972, 2021. DOI: 10.1038/s41598-021-84142-8. Disponível em: https://www.nature.com/articles/s41598-021-84142-8. Acesso em: 11 dez. 2024.
dc.identifier.doi10.1038/s41598-021-84142-8
dc.identifier.issne- 2045-2322
dc.identifier.urihttp://repositorio.bc.ufg.br//handle/ri/26165
dc.language.isoeng
dc.publisher.countryGra-bretanha
dc.publisher.departmentInstituto de Patologia Tropical e Saúde Pública - IPTSP (RMG)
dc.rightsAcesso Aberto
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.titleInnovative granular formulation of Metarhizium robertsii microsclerotia and blastospores for cattle tick control
dc.typeArtigo

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