Chemical composition and toxicity of the essential oils from Cunila species (Lamiaceae) on the cattle tick Rhipicephalus (Boophilus) microplus.
The essential oils obtained from the aerial parts of five species of Cunila (Lamiaceae) native to Southern Brazil were analyzed by GC and GC/MS. The oil of Cunila angustifolia was characterized by sabinene; Cunila incana is rich in alpha-pinene and beta-pinene, Cunila spicata and Cunila microcephala presented menthofuran as the main component, and in the essential oil of Cunila incisa, the major component was 1,8-cineole. Laboratory tests were carried out to determine the effect of the essential oils of the above cited plants on larvae of the cattle tick Riphicephalus (Boophilus) microplus. C. angustifolia, C. incana, and C. spicata were the most active samples killing almost the totality of the larvae. C. incisa and C. microcephala showed low acaricidal effect.
Faculdade de Farmácia, UFRGS, Av. Ipiranga, 2752, 90610-000, Porto Alegre, RS, Brazil.
Miriam A
MA
Apel
Vera Lucia Sardá
VL
Ribeiro
Sérgio A L
SA
Bordignon
Amélia T
AT
Henriques
Gilsane
G
von Poser
D000818:Animals; D000081008:Bicyclic Monoterpenes; D001938:Brazil; D001643:Bridged Bicyclo Compounds / Q000032:analysis; D002849:Chromatography, Gas; D003511:Cyclohexanols / Q000032:analysis; D000077591:Eucalyptol; D008401:Gas Chromatography-Mass Spectrometry; D019686:Lamiaceae / Q000737:chemistry*; D007814:Larva / Q000187:drug effects; D039821:Monoterpenes / Q000032:analysis; D009822:Oils, Volatile / Q000737:chemistry* / Q000302:isolation & purification / Q000633:toxicity*; D048494:Rhipicephalus / Q000187:drug effects*; D016019:Survival Analysis
D000081008:Bicyclic Monoterpenes; D001643:Bridged Bicyclo Compounds; D003511:Cyclohexanols; D039821:Monoterpenes; D009822:Oils, Volatile; C054487:menthofuran; C010789:beta-pinene; C035127:sabinene; C005451:alpha-pinene; D000077591:Eucalyptol