title: Chemical composition and fumigant toxicity of the essential oils from 16 species of Eucalyptus against Haematobia irritans (Diptera: Muscidae) adults.
abstract: Oils extracted from various species of Eucalyptus (Eucalyptus badjensis Beuzev & Welch, Eucalyptus badjensis x Eucalyptus nitens, Eucalyptus benthamii variety dorrigoensis Maiden & Cambage, Eucalyptus botryoides Smith, Eucalyptus dalrympleana Maiden, Eucalyptus fastigata Deane & Maiden, Eucalyptus nobilis L.A.S. Johnson & K. D. Hill, Eucalyptus polybractea R. Baker, Eucalyptus radiata ssp. radiata Sieber ex Spreng, Eucalyptus resinifera Smith, Eucalyptus robertsonii Blakely, Eucalyptus rubida Deane & Maiden, Eucalyptus smithii R. Baker, Eucalyptus elata Dehnh, Eucalyptus fraxinoides Deane & Maiden, E. obliqua L'Hér) were obtained by hydrodistillation. The chemical composition of essential oils was determined by gas chromatography coupled to mass spectrometry. Essential oils were mainly composed of 1,8-cineole, alpha-pinene, alpha-terpineol, 4-terpineol, and p-cymene. Vapors from these essential oils and their major components were found to be toxic to Haematobia irritans (L.) (Diptera: Muscidae) adults. An aliquot of each oil was placed in a cylindrical test chamber, and the number of knocked down flies was recorded as a function of time. Knockdown time 50% was then calculated. Results showed that essential oil of E. polybractea had the highest knockdown activity of 3.44 min. A correlation was observed between the content of 1,8-cineole in the Eucalyptus essential oils and the corresponding toxic effect.
authors: Centro de Investigaciones de Plagas e Insecticidas (CITEFA-CONICET), Juan Bautista de La Salle 4397 (B1603ALO), Villa Martelli, Buenos Aires, Argentina.
authors: Laura W
authors: LW
authors: Juan
authors: Alejandro
authors: A
authors: Lucia
authors: Eduardo N
authors: EN
authors: Zerba
authors: Leonel
authors: L
authors: Harrand
authors: Martin
authors: M
authors: Marco
authors: Hector M
authors: HM
authors: Masuh
mesh_terms: D000818:Animals; D001118:Argentina; D005052:Eucalyptus / Q000737:chemistry / Q000633:toxicity*; D005651:Fumigation / Q000009:adverse effects*; D007300:Insect Control / Q000379:methods*; D007306:Insecticides / Q000633:toxicity*; D009117:Muscidae / Q000187:drug effects*; D009822:Oils, Volatile / Q000737:chemistry / Q000633:toxicity*; D010938:Plant Oils / Q000737:chemistry / Q000633:toxicity; D013045:Species Specificity
chemical_list: D007306:Insecticides; D009822:Oils, Volatile; D010938:Plant Oils