Acaricidal activity of thymol against larvae of Rhipicephalus microplus (Acari: Ixodidae) under semi-natural conditions

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dc.contributor.authorAraujo, Laryssa Xavier
dc.contributor.authorLopes Novato, Tatiane Pinheiro
dc.contributor.authorZeringota, Viviane
dc.contributor.authorMatos, Renata Silva [UNESP]
dc.contributor.authorSouza Senra, Tatiane Oliveira
dc.contributor.authorMaturano, Ralph
dc.contributor.authorAzevedo Prata, Marcia Cristina
dc.contributor.authorDaemon, Erik
dc.contributor.authorOliveira Monteiro, Caio Marcio
dc.contributor.institutionUniv Fed Juiz de Fora
dc.contributor.institutionUniv Fed Rural Rio de Janeiro
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionEmpresa Brasileira de Pesquisa Agropecuária (EMBRAPA)
dc.date.accessioned2018-11-26T15:27:45Z
dc.date.available2018-11-26T15:27:45Z
dc.date.issued2015-09-01
dc.description.abstractThis is the first study to investigate the activity of thymol on Rhipicephalus microplus larvae under semi-natural conditions. For this purpose, tests were conducted in pots with Brachiaria decumbens seedlings containing cattle tick larvae. Thymol, diluted in ethanol 50A degrees GL, was tested at concentrations of 2.5, 5.0, 10.0, 15.0, and 20.0 mg/mL, along with the control group treated with the solvent alone. Each treatment was composed of five pots (1 pot = a repetition). The experiment was performed in three steps. On the first day, the larvae were applied at the base of the signalgrass. Twenty-four hours later, approximately 25 mL of the solution was applied with thymol on the top of the vegetation in each pot. The survival of the larvae was measured 24 h after application of the solutions. Each pot was analyzed individually, and the grass fillets contained larvae were cut with scissors, placed in Petri dishes, and taken to the laboratory to count the number of living larvae. At the highest concentrations (10, 15, and 20 mg /mL), the number of live larvae declined by more than 95 % in relation to the control group. The lethal concentration 50 % (LC50) and LC90 values were 3.45 and 9.25 mg/ml, respectively. The application of thymol in semi-natural conditions starting concentration of 10 mg/mL significantly reduced the number of living R. microplus larvae.en
dc.description.affiliationUniv Fed Juiz de Fora, Programa Posgrad Ciencias Biol Comportamento & Bi, BR-36036900 Juiz De Fora, MG, Brazil
dc.description.affiliationUniv Fed Rural Rio de Janeiro, Programa Posgrad Ciencias Vet, BR-23851970 Seropedica, RJ, Brazil
dc.description.affiliationUniv Estadual Paulista, BR-13506900 Rio Claro, SP, Brazil
dc.description.affiliationEmbrapa Gado Leite, Parasitol Lab, BR-36038330 Juiz De Fora, MG, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, BR-13506900 Rio Claro, SP, Brazil
dc.format.extent3271-3276
dc.identifierhttp://dx.doi.org/10.1007/s00436-015-4547-3
dc.identifier.citationParasitology Research. New York: Springer, v. 114, n. 9, p. 3271-3276, 2015.
dc.identifier.doi10.1007/s00436-015-4547-3
dc.identifier.fileWOS000359865600010.pdf
dc.identifier.issn0932-0113
dc.identifier.urihttp://hdl.handle.net/11449/158461
dc.identifier.wosWOS:000359865600010
dc.language.isoeng
dc.publisherSpringer
dc.relation.ispartofParasitology Research
dc.relation.ispartofsjr0,991
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.subjectCattle tick
dc.subjectBrachiaria decumbens
dc.subjectSemi-natural conditions
dc.subjectMonoterpene
dc.titleAcaricidal activity of thymol against larvae of Rhipicephalus microplus (Acari: Ixodidae) under semi-natural conditionsen
dc.typeArtigo
dcterms.licensehttp://www.springer.com/open+access/authors+rights?SGWID=0-176704-12-683201-0
dcterms.rightsHolderSpringer

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