| Title: | "Identification of the female-produced sex pheromone of Tischeria ekebladella, an oak leafmining moth" |
| Author(s): | Molnar BP; Troger A; Toshova TB; Subchev M; van Nieukerken EJ; Koster JC; Szocs G; Toth M; Francke W; |
| Address: | "Plant Protection Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, Budapest Pf 102, 1525, Hungary" |
| DOI: | 10.1007/s10886-012-0184-9 |
| ISSN/ISBN: | 1573-1561 (Electronic) 0098-0331 (Linking) |
| Abstract: | "The native leafmining moth Tischeria ekebladella (Lepidoptera: Tischeriidae) feeds on oaks and recently has become a pest of silviculture and urban green areas in central Europe. The behavioral responses of male moths to hexane extracts of whole bodies of calling females or males were tested under laboratory conditions. Only extracts of females elicited responses from males. Analysis of extracts by coupled gas chromatography/electroantennographic detection revealed the presence of two electroantennogram-active peaks. Structure elucidation of these compounds, by gas-chromatography/mass spectrometry and independent synthesis revealed them to be (3Z,6Z,9Z)-tricosa-3,6,9-triene and (3Z,6Z,9Z,19Z)-tricosa-3,6,9,19-tetraene. While the triene was present in both sexes, the tetraene was female-specific. The latter is a new structure for a pheromone component of Lepidoptera and a novel natural product. Field trapping tests, carried out in a mixed oak forest near Budapest (Hungary), using synthetic compounds applied to rubber dispensers, showed that the tetraene per se elicited catches of males in large numbers. When the triene was added to the tetraene in a ratio of 1:1, there was no increase in trap catch; the triene alone did not elicit catches of males. For monitoring this insect, the tetraene, applied to rubber dispensers at a dose of 300 mug, is a potent sex attractant" |
| Keywords: | "Animals Arthropod Antennae/drug effects Female Gas Chromatography-Mass Spectrometry Hungary Male Moths/*chemistry/drug effects/*physiology Sex Attractants/chemical synthesis/*isolation & purification/*metabolism Sexual Behavior, Animal/drug effects;" |
| Notes: | "MedlineMolnar, Bela Peter Troger, Armin Toshova, Theodora B Subchev, Mitko van Nieukerken, Erik J Koster, J C Sjaak Szocs, Gabor Toth, Miklos Francke, Wittko eng Research Support, Non-U.S. Gov't 2012/10/12 J Chem Ecol. 2012 Oct; 38(10):1298-305. doi: 10.1007/s10886-012-0184-9. Epub 2012 Sep 30" |
