Title:	Innovative granular formulation of Metarhizium robertsii microsclerotia and blastospores for cattle tick control.
Authors:	MARCIANO, A. F. MASCARIN, G. M. FRANCO, R. F. F. GOLO, P. S. JARONSKI, S. T. FERNANDES, E. K. K. BITTENCOURT, V. R. E. P.
Affiliation:	ALLAN FELIPE MARCIANO, UFRRJ; GABRIEL MOURA MASCARIN, CNPMA; RENATO FELIPE FERREIRA FRANCO, UFG; PATRÍCIA SILVA GOLO, UFRRJ; STEFAN T JARONSKI, Jaronski Mycological Consulting; ÉVERTON KORT KAMP FERNANDES, UFG; VÂNIA RITA ELIAS PINHEIRO BITTENCOURT, UFRRJ.
Date Issued:	2021
Citation:	Scientific Reports, v. 11, n. 1, article 4972, 2021.
Pages:	p. 1-11.
Description:	Abstract: The 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-field 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 significantly reduced the number of tick larvae during the humid season, reaching at least 64.8% relative efficacy. 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.
Thesagro:	Carrapato Bovino Fungo Entomógeno Fungo Para Controle Biológico
NAL Thesaurus:	Metarhizium robertsii Ticks Biological control Biological control agents Pesticide formulations
ISSN:	2045-2322
DOI:	https://doi.org/10.1038/s41598-021-84142-8
Type of Material:	Artigo de periódico
Access:	openAccess
Appears in Collections:	Artigo em periódico indexado (CNPMA)