title: Insecticidal Activity of the Leaf Essential Oil of Peperomia borbonensis Miq. (Piperaceae) and Its Major Components against the Melon Fly Bactrocera cucurbitae (Diptera: Tephritidae).
abstract: The essential oil from the leaves of Peperomia borbonensis from Réunion Island was obtained by hydrodistillation and characterized using GC-FID, GC/MS and NMR. The main components were myristicin (39.5%) and elemicin (26.6%). The essential oil (EO) of Peperomia borbonensis and its major compounds (myristicin and elemicin), pure or in a mixture, were evaluated for their insecticidal activity against Bactrocera cucurbitae (Diptera: Tephritidae) using a filter paper impregnated bioassay. The concentrations necessary to kill 50% (LC50) and 90% (LC90) of the flies in three hours were determined. The LC50value was 0.23 ± 0.009 mg/cm2and the LC90value was 0.34 ± 0.015 mg/cm2for the EO. The median lethal time (LT50) was determined to compare the toxicity of EO and the major constituents. The EO was the most potent insecticide (LT50= 98 ± 2 min), followed by the mixture of myristicin and elemicin (1.4:1) (LT50= 127 ± 2 min) indicating that the efficiency of the EO is potentiated by minor compounds and emphasizing one of the major assets of EOs against pure molecules.
authors.affiliation: Laboratoire de Chimie des Substances Naturelles et des Sciences des Aliments (LCSNSA), Université de La Réunion, Avenue René Cassin-CS, 92003-97744, Saint-Denis Cedex 9, France.
authors.forename: Emmanuelle
authors.initials: E
authors.lastname: Dorla
authors.affiliation: Laboratoire de Chimie des Substances Naturelles et des Sciences des Aliments (LCSNSA), Université de La Réunion, Avenue René Cassin-CS, 92003-97744, Saint-Denis Cedex 9, France.
authors.forename: Anne
authors.initials: A
authors.lastname: Gauvin-Bialecki
authors.affiliation: Laboratoire de Chimie des Substances Naturelles et des Sciences des Aliments (LCSNSA), Université de La Réunion, Avenue René Cassin-CS, 92003-97744, Saint-Denis Cedex 9, France.
authors.forename: Zoé
authors.initials: Z
authors.lastname: Deuscher
authors.affiliation: CIRAD, UMR-PVBMT, 7 chemin de l'IRAT, Saint Pierre, 97410, France.
authors.forename: Agathe
authors.initials: A
authors.lastname: Allibert
authors.affiliation: Laboratoire de Chimie des Substances Naturelles et des Sciences des Aliments (LCSNSA), Université de La Réunion, Avenue René Cassin-CS, 92003-97744, Saint-Denis Cedex 9, France.
authors.forename: Isabelle
authors.initials: I
authors.lastname: Grondin
authors.affiliation: CIRAD, UMR-PVBMT, 7 chemin de l'IRAT, Saint Pierre, 97410, France.
authors.forename: Jean-Philippe
authors.initials: JP
authors.lastname: Deguine
authors.affiliation: Laboratoire de Chimie des Substances Naturelles et des Sciences des Aliments (LCSNSA), Université de La Réunion, Avenue René Cassin-CS, 92003-97744, Saint-Denis Cedex 9, France.
authors.forename: Philippe
authors.initials: P
authors.lastname: Laurent
mesh_terms: D000081248:Allylbenzene Derivatives; D000818:Animals; D001593:Benzyl Compounds / Q000302:isolation & purification / Q000633:toxicity; D004148:Dioxolanes / Q000302:isolation & purification / Q000633:toxicity; D004175:Diptera / Q000187:drug effects; D008401:Gas Chromatography-Mass Spectrometry; D007306:Insecticides / Q000302:isolation & purification* / Q000494:pharmacology; D009682:Magnetic Resonance Spectroscopy; D009822:Oils, Volatile / Q000737:chemistry*; D036941:Peperomia / Q000737:chemistry*; D018515:Plant Leaves / Q000737:chemistry*; D011748:Pyrogallol / Q000031:analogs & derivatives / Q000302:isolation & purification / Q000633:toxicity; D033621:Tephritidae / Q000187:drug effects*
chemical_list: D000081248:Allylbenzene Derivatives; D001593:Benzyl Compounds; D004148:Dioxolanes; D007306:Insecticides; D009822:Oils, Volatile; D011748:Pyrogallol; C005246:myristicin; C002135:elemicin
keywords: 
  Bactrocera cucurbitae
  ; 
  Peperomia borbonensis
  ; Elemicin; Essential oil; Insecticidal activities; Myristicin