title: In vitroeffect of seven essential oils on the reproduction of the cattle tickRhipicephalus microplus.
abstract: The acaricidal effect of seven essential oils was examinedin vitroagainst the cattle tick (Rhipicephalus microplus). Engorged female ticks were manually collected in farms of Southern Brazil and placed into petri dishes (n= 10) in order to test the following oils: juniper (Juniperus communis), palmarosa (Cymbopogon martinii), cedar (Cedrus atlantica), lemon grass (Cymbopogon citratus), ginger (Zingiber officinale), geranium (Pelargonium graveolens) and bergamot (Citrus aurantium var bergamia) at concentrations of 1%, 5%, and 10% each. A control group was used to validate the tests containing Triton X-100 only. Treatment effectiveness was measured considering inhibition of tick oviposition (partial or total), egg's weight, and hatchability.C. martinii,C. citratusandC. atlanticaessential oils showed efficacy higher than 99% at all concentrations tested. In addition,J. communis,Z. officinale,P. graveolens, andC. aurantium var bergamiaoils showed efficiency ranging from 73% to 95%, depending on the concentration tested, where higher concentrations showed greater efficacy. It was concluded that essential oils can affect tick reproductionin vitroby inhibiting oviposition and hatchability.
authors.affiliation: Department of Animal Science, Universidade do Estado de Santa Catarina, Chapecó, Santa Catarina, Brazil.
authors.forename: Rafael
authors.initials: R
authors.lastname: Pazinato
authors.affiliation: Department of Animal Science, Universidade do Estado de Santa Catarina, Chapecó, Santa Catarina, Brazil.
authors.forename: Andréia
authors.initials: A
authors.lastname: Volpato
authors.affiliation: Department of Microbiology and Parasitology, Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul, Brazil.
authors.forename: Matheus D
authors.initials: MD
authors.lastname: Baldissera
authors.affiliation: Laboratory of Microbiology, Nanoscience Graduate Program, Centro Universitário Franciscano, Santa Maria, Rio Grande do Sul, Brazil.
authors.forename: Roberto C V
authors.initials: RC
authors.lastname: Santos
authors.affiliation: Department of Animal Science, Universidade do Estado de Santa Catarina, Chapecó, Santa Catarina, Brazil.
authors.forename: Dilmar
authors.initials: D
authors.lastname: Baretta
authors.affiliation: Department of Microbiology and Parasitology, Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul, Brazil.
authors.forename: Rodrigo A
authors.initials: RA
authors.lastname: Vaucher
authors.affiliation: Laboratory of Microbiology, Nanoscience Graduate Program, Centro Universitário Franciscano, Santa Maria, Rio Grande do Sul, Brazil.
authors.forename: Janice L
authors.initials: JL
authors.lastname: Giongo
authors.affiliation: Laboratory of Phytochemistry, Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul, Brazil.
authors.forename: Aline A
authors.initials: AA
authors.lastname: Boligon
authors.affiliation: Department of Animal Science, Universidade do Estado de Santa Catarina, Chapecó, Santa Catarina, Brazil.
authors.forename: Lenita Moura
authors.initials: LM
authors.lastname: Stefani
authors.affiliation: Department of Animal Science, Universidade do Estado de Santa Catarina, Chapecó, Santa Catarina, Brazil.
authors.forename: Aleksandro Schafer
authors.initials: AS
authors.lastname: Da Silva
keywords: Acaricidal effect; Boophilus microplus; Cattle ticks; Control; Essential oil; Natural product