Metarhizium anisopliae for controlling Rhipicephalus microplus ticks under field conditions

•Fungal oil-based formulation against Rhipicephalus microplus under field conditions.•The average efficacy of the oil-based formulation of Metarril SP Organic was 75.09%.•Fungal oil-based formulation shows potential for Rhipicephalus microplus biocontrol. Metarril SP Organic is a product based on th...

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Bibliographic Details
Published in:	Veterinary parasitology Vol. 223; pp. 38 - 42
Main Authors:	Camargo, Mariana G., Nogueira, Michel R.S., Marciano, Allan F., Perinotto, Wendell M.S., Coutinho-Rodrigues, Caio J.B., Scott, Fábio B., Angelo, Isabele C., Prata, Márcia C.A., Bittencourt, Vânia R.E.P.
Format:	Journal Article
Language:	English
Published:	Netherlands Elsevier B.V 15-06-2016
Subjects:	Animals Arthropod-pathogenic fungi Biological control Cattle Cattle Diseases - parasitology Cattle Diseases - therapy Cattle tick Ixodidae Metarhizium - physiology Metarhizium anisopliae Mineral Oil - pharmacology Oil-based formulations Pest Control, Biological Rhipicephalus Rhipicephalus - drug effects Rhipicephalus - microbiology Tick Control - methods Oil-based formulations Cattle tick Arthropod-pathogenic fungi Biological control
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Summary:	•Fungal oil-based formulation against Rhipicephalus microplus under field conditions.•The average efficacy of the oil-based formulation of Metarril SP Organic was 75.09%.•Fungal oil-based formulation shows potential for Rhipicephalus microplus biocontrol. Metarril SP Organic is a product based on the fungus Metarhizium anisopliae, which was developed for controlling agricultural pests. The present study evaluated the effect of Metarril SP Organic plus 10% mineral oil, for controlling Rhipicephalus microplus under field conditions. Three groups were formed: Control group, which received no treatment; Oil control group, which was bathed only with water, Tween 80 and mineral oil; and Metarril group, bathed in the oil-based formulation Metarril SP Organic. Two treatments per group were performed and to verify the effect of the treatments, all R. microplus ticks between 4.5 and 8.0mm in length on the left side of the cattle were counted on days +7, +14 and +21 after each treatment, and a sample of engorged females was collected for evaluation of biological parameters. The Metarril SP Organic oil formulation showed efficacy ranging from 8.53 to 90.53%. The average efficacy of the oil-based formulation of Metarril SP Organic was 75.09 and 46.59% compared with the groups Control and Oil control, respectively. There were no significant changes in biological parameters of engorged R. microplus females collected from animals. Although there was no significant difference in the amount of ticks between the Oil control and Metarril groups, it is believed that the association of mineral oil with Metarril SP Organic product is effective in R. microplus tick control in field. Thus, this association has potential to be used in strategic control programs of cattle tick.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	0304-4017 1873-2550
DOI:	10.1016/j.vetpar.2016.04.014