Óleo de citronela no controle do carrapato de bovinos Citronella oil on the control of catle ticks
2008
Clair Jorge Olivo | Nelcy Madruga de Carvalho | José Henrique Souza da Silva | Fernanda Flores Vogel | Péricles Massariol | Gilmar Meinerz | Carlos Agnolin | Ademir Farias Morel | Luiz Volnei Viau
O objetivo deste estudo foi avaliar o efeito in vivo e in vitro do óleo de citronela (Cymbopogon nardus (L.) Rendle) no carrapato de bovinos (Boophilus microplus). O óleo foi obtido de folhas frescas pelo processo de destilação e o rendimento foi de 0,7%. Para as experimentações in vitro foram usadas sete (0; 0,5; 1,0; 10,0; 25,0; 50,0; 100,0%) e nove (0,1; 0,25; 0,5; 1,0; 2,0; 10,0; 25,0; 50,0; 100%) concentrações de óleo de citronela, sendo testadas em fêmeas ingurgitadas. A eficácia observada foi de 0; 44,2; 92,1; 85,6; 87,8; 87,0; 88,9 e de 0,7; 2,8; 51,6; 79,3; 81,0; 87,1; 86,7; 89,5%, respectivamente. Os resultados sugerem que o óleo de citronela pode ser usado no controle do carrapato bovino.<br>This research was aimed at evaluating in vitro and in vivo effects of citronella (Cymbopogon nardus (L.) Rendle) oil on catle ticks. The volatile oil was obtained from de fresh leaves of citronella grass by steam destilation and the yelds was 0.7%. Seven (0; 0.5; 1.0; 10.0; 25.0; 50.0; 100.0%) and nine (0.1; 0.25; 0.5; 1.0; 2.0; 10.0; 25.0; 50.0; 100.0%) concentrations of citonella oil were used on in vitro trials with engorged female ticks. The efficacy control ticks was 0; 44.2; 92.1; 85.6; 87.8; 87.0; 88.9 and 0; 0.7; 2.8; 51.6; 79.3; 81.0; 87.1; 86.7 89.5 %, respectively. These sugest that the citronella oil can be practical used for controlling of catle ticks.
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