title: Acaricidal properties of the formulations based on essential oils from Cymbopogon winterianus and Syzygium aromaticum plants.
abstract: The cattle tick, Rhipicephalus (Boophilus) microplus, has caused serious harm to livestock raising in Brazil, considering the costs of controlling it, loss of revenue due to smaller production of milk and meat, and damage to leather, in addition to transmitting diseases. The use of medicinal plants is considered an alternative to the recurring resistance to chemicals. Due to the need for efficient alternatives with less environmental impact, this study aimed to develop contact formulations with essential oils from the Java citronella (Cymbopogon winterianus) and clove (Syzygium aromaticum) plants and to assess in vitro the effects in different stages of the tick cycle. In the present study, concentrations from 0.5-15.0% of the essential oils incorporated in the formulations were used. The ticks from different geographical areas were treated with those formulations, and their effects on the production levels of eggs, on the larvae hatching, and their efficiency on ticks were assessed. The obtained results were compared with other commercial acaricidal products. After the 20th day of treatment, the formulations with citronella essential oil had 2.09-55.51% efficiency, depending on the concentration of the oil incorporated. The efficiency of the treatment with formulations containing clove essential oil was higher, from 92.47-100%. The results showed the acaricidal effects of the formulations tested when compared to commercial chemical products. In vivo studies should be performed in order to assess the efficiency of those formulations in the fields, aiming to use these products as an alternative for controlling cattle ticks.
authors.affiliation: Departamento Farmacêutico, Faculdade de Farmácia, Universidade Federal de Juiz de Fora, Campus Universitário, 36036-900, Juiz de Fora, Minas Gerais, Brazil.
authors.forename: Valéria
authors.initials: V
authors.lastname: de Mello
authors.forename: Márcia Cristina de Azevedo
authors.initials: MC
authors.lastname: Prata
authors.forename: Márcio Roberto
authors.initials: MR
authors.lastname: da Silva
authors.forename: Erik
authors.initials: E
authors.lastname: Daemon
authors.forename: Luciane Santos
authors.initials: LS
authors.lastname: da Silva
authors.forename: Flávia del Gaudio
authors.initials: Fdel G
authors.lastname: Guimarães
authors.forename: Alessandra Esther
authors.initials: AE
authors.lastname: de Mendonça
authors.forename: Evelize
authors.initials: E
authors.lastname: Folly
authors.forename: Fernanda Maria Pinto
authors.initials: FM
authors.lastname: Vilela
authors.forename: Lilian Henriques
authors.initials: LH
authors.lastname: do Amaral
authors.forename: Lucio Mendes
authors.initials: LM
authors.lastname: Cabral
authors.forename: Maria da Penha Henriques
authors.initials: Mda P
authors.lastname: do Amaral
mesh_terms: D056810:Acaricides / Q000737:chemistry; D000080462:Acyclic Monoterpenes; D000447:Aldehydes / Q000032:analysis; D000818:Animals; D001938:Brazil; D002417:Cattle; D002418:Cattle Diseases / Q000469:parasitology / Q000517:prevention & control; D031743:Cymbopogon / Q000737:chemistry*; D005054:Eugenol / Q000032:analysis; D005260:Female; D008401:Gas Chromatography-Mass Spectrometry; D007814:Larva / Q000187:drug effects; D039821:Monoterpenes / Q000032:analysis; D009822:Oils, Volatile / Q000737:chemistry; D010936:Plant Extracts / Q000737:chemistry; D048494:Rhipicephalus; D027842:Syzygium / Q000737:chemistry*; D013984:Tick Infestations / Q000469:parasitology / Q000517:prevention & control / Q000662:veterinary
chemical_list: D056810:Acaricides; D000080462:Acyclic Monoterpenes; D000447:Aldehydes; D039821:Monoterpenes; D009822:Oils, Volatile; D010936:Plant Extracts; D005054:Eugenol; C108217:citronellal