| Title: | "A male-predominant cuticular hydrocarbon, 7-methyltricosane, is used as a contact pheromone in the western flower thrips Frankliniella occidentalis" |
| Author(s): | Olaniran OA; Sudhakar AV; Drijfhout FP; Dublon IA; Hall DR; Hamilton JG; Kirk WD; |
| Address: | "Centre for Applied Entomology and Parasitology, School of Life Sciences, Keele University, Staffordshire, ST5 5BG, UK" |
| DOI: | 10.1007/s10886-013-0272-5 |
| ISSN/ISBN: | 1573-1561 (Electronic) 0098-0331 (Linking) |
| Abstract: | "In a laboratory bioassay, adult female Frankliniella occidentalis (Pergande) (Thysanoptera: Thripidae) spent more time near filter paper disks that had been exposed to adult males than near unexposed disks; this effect was not observed on disks exposed to adult females. The response could only partly be explained by the known male-produced aggregation pheromone, neryl (S)-2-methylbutanoate, suggesting the presence of an unknown male-produced compound. In gas chromatography/mass spectrometry analyses, 7-methyltricosane was detected on disks exposed to males, but not on disks exposed to females. Extracts of cuticular lipids also showed relatively large amounts of 7-methyltricosane on males, whereas only trace amounts were found on females and none on larvae. Bioassays of synthetic 7-methyltricosane showed that adults responded only after contact. The response to this compound was clearly different from that to n-tricosane or hexane-only controls. Females that contacted 7-methyltricosane on glass beads stayed in the vicinity and frequently raised the abdomen, a behavior that rejects mating attempts by males. Males stayed in the vicinity and wagged the abdomen sideways, a behavior used in fighting between males. This is the first identification of a contact pheromone in the order Thysanoptera" |
| Keywords: | "Alkanes/*chemistry/pharmacology Animals Female Gas Chromatography-Mass Spectrometry Hydrocarbons/*chemistry Larva/metabolism Male Sex Attractants/*chemistry/pharmacology Sexual Behavior, Animal/drug effects/physiology Thysanoptera/growth & development/*me;" |
| Notes: | "MedlineOlaniran, Oladele A Sudhakar, Akella V S Drijfhout, Falko P Dublon, Ian A N Hall, David R Hamilton, James G C Kirk, William D J eng Research Support, Non-U.S. Gov't 2013/03/23 J Chem Ecol. 2013 Apr; 39(4):559-68. doi: 10.1007/s10886-013-0272-5. Epub 2013 Mar 22" |
