Anti-attractant activity of (+)-trans-4-thujanol for Eurasian spruce bark beetle Ips typographus: Novel potency for femalesShow others and affiliations
2022 (English)In: Pest Management Science, ISSN 1526-498X, E-ISSN 1526-4998, Vol. 78, no 5, p. 1992-1999Article in journal (Refereed) Published
Abstract [en]
BACKGROUND Eurasian spruce bark beetles (Ips typographus) use both attractant and anti-attractant semiochemicals to find suitable mature host trees. Trans-4-thujanol is abundant in young, unsuitable spruce trees. Electrophysiological studies have demonstrated its high activity levels, but field data are lacking. RESULTS Enantioselective GC-MS analysis showed that only (1R,4S)-(+)-trans-4-thujanol was present in Norway spruce bark volatiles. In a factorial design field-trapping experiment, trans-4-thujanol alone was not attractive to Ips typographus. Traps baited with I. typographus' aggregation pheromone and trans-4-thujanol or the known anti-attractant 1,8-cineole caught fewer beetles than those baited with the aggregation pheromone alone. Catches for trans-4-thujanol and 1,8-cineole were dose-dependent. Intermediate doses of trans-4-thujanol and 1,8-cineole had a similar effect. Surprisingly, in contrast to 1,8-cineole and other known Ips anti-attractants, which all inhibit males more strongly than females, the addition of trans-4-thujanol to the aggregation pheromone reduced the attraction of females more. CONCLUSION The Norway spruce volatile (+)-trans-4-thujanol is a novel I. typographus anti-attractant with potency comparable to the known anti-attractants 1,8-cineole and verbenone, and is more effective for females than for males. Incorporating (+)-trans-4-thujanol into anti-attractant lures could improve protection of trees from mass attack by I. typographus.
Place, publisher, year, edition, pages
John Wiley & Sons, 2022. Vol. 78, no 5, p. 1992-1999
Keywords [en]
Coleoptera, Curculionidae, Scolytinae, repellent, (1R, 4S)-(+)-trans-4-thujanol, sabinene hydrate, dose-response, oxygenated terpene, integrated pest management
National Category
Ecology Organic Chemistry
Research subject
Natural Science, Ecological chemistry
Identifiers
URN: urn:nbn:se:lnu:diva-110696DOI: 10.1002/ps.6819ISI: 000756318800001PubMedID: 35104043Scopus ID: 2-s2.0-85124543689Local ID: 2022OAI: oai:DiVA.org:lnu-110696DiVA, id: diva2:1641751
2022-03-032022-03-032022-09-19Bibliographically approved