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      Efeito acaricida de óleos essenciais e concentrados emulsionáveis de Eucalyptus spp em Boophilus microplus Translated title: Acaricide effect of Eucalyptus spp essential oils and concentrated emulsion on Boophilus microplus

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          Abstract

          Realizou-se um estudo sobre a ação biocida de Eucalyptus citriodora, Eucalyptus globulus e Eucalyptus staigeriana no carrapato Boophilus microplus, buscando-se a produção de acaricidas menos agressivos ao meio ambiente. Os óleos essenciais das três espécies e os concentrados emulsionáveis de E. globulus e E. staigeriana foram testados em cinco concentrações diferentes contra larvas e fêmeas ingurgitadas de B. microplus. Os óleos foram submetidos à análise por cromatografia gasosa acoplada à espectrometria de massas (CG/EM), a fim de se investigar sua composição. O citronelal é o principal componente do óleo de E. citriodora, sendo responsável por sua ação acaricida. O mesmo ocorre com o 1,8-cineol em E. globulus. Em E. staigeriana existem várias substâncias que agem sinergicamente contra B. microplus. O óleo essencial de E. citriodora matou 100% dos carrapatos a uma concentração média de 17,5%, o de E. globulus a 15% e o de E. staigeriana a 12,5%. Os concentrados emulsionáveis de E. globulus mataram 100% dos carrapatos a uma concentração média de 9,9% e o de E. staigeriana a uma concentração de 3,9%. O desenvolvimento de produtos que possam ser testados a campo e comercializados a preços competitivos serão passos a serem seguidos. Os biocarrapaticidas têm um apelo comercial grande, permitindo controlar B. microplus de um modo menos agressivo ao meio ambiente.

          Translated abstract

          Biocide action of Eucalyptus citriodora, Eucalyptus globulus and Eucalyptus staigeriana were studied against Boophilus microplus tick, aiming the production of an environmentally and ecologically conect and len harmpol acaricide. Essential oil emulsion of three Eucaliptus species were tested in five different concentrations against larvae and engorged female of B. microplus. Oils were submitted to gas chromatograph coupled to mass spectrometer (GC/MS) analysis looking for its composition. Citronelal is the major component of E. citriodora essential oil, being responsible for its acaricide action. The same happens with 1.8-cineole in E. globulus. In E. staigeriana, there are many substances involved in a synergic action against B. microplus. E. citriodora essential oil killed all ticks in an average concentration of 17.5% as compared to E. globulus with 15% and E. staigeriana with 12.5%. E. globulus concentrated emulsion killed all ticks in an average concentration of 9.9% and E. staigeriana in a concentration of 3.9%. Further steps will be pursued to make those essential oils to be tested under field conditions and available to the farmers, since bioacaricides has commercial appeal, allowing B. microplus control in a less aggressive way to the environment.

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          Boophilus annulatus and B. microplus: laboratory tests of insecticides.

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            Insecticidal activity of monoterpenes against Rhyzopertha dominica (F.) and Tribolium castaneum (Herbst)

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              Analysis of the genetic diversity among mandarins (Citrus spp.) using RAPD makers

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                bjvras
                Brazilian Journal of Veterinary Research and Animal Science
                Braz. J. Vet. Res. Anim. Sci.
                Faculdade de Medicina Veterinária e Zootecnia / Universidade de São Paulo (São Paulo )
                1678-4456
                2002
                : 39
                : 5
                : 247-253
                Affiliations
                [1 ] Universidade Federal de Minas Gerais Brazil
                [2 ] Universidade Federal Rural do Rio de Janeiro Brazil
                [3 ] Embrapa Milho e Sorgo Brazil
                [4 ] Universidade Federal de Minas Gerais Brazil
                [5 ] Embrapa Gado de Leite Brazil
                [6 ] Universidade Federal de Minas Gerais Brazil
                Article
                S1413-95962002000500006
                10.1590/S1413-95962002000500006
                3c7718d4-5789-4c7c-bce6-d8d4cde3e6cd

                http://creativecommons.org/licenses/by/4.0/

                History
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                SciELO Brazil

                Self URI (journal page): http://www.scielo.br/scielo.php?script=sci_serial&pid=1413-9596&lng=en
                Categories
                AGRICULTURE, DAIRY & ANIMAL SCIENCE
                VETERINARY SCIENCES

                Animal agriculture,General veterinary medicine
                Boophilus microplus,Acaricides,Eucalyptus,Essential oils,Concentrated emulsion,Acaricidas,Óleos essenciais,Concentrados emulsionáveis

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