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    Author(s): Edward H. Holsten; Roger E. Burnside; Steven J. Seybold
    Date: 2000
    Source: Res. Pap. PNW-RP-529. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 9 p
    Publication Series: Research Paper (RP)
    Station: Pacific Northwest Research Station
    PDF: View PDF  (88 KB)

    Description

    From 1996 through 1999, field tests of various engraver beetle (Ips perturbatus (Eichhoff)) semiochemicals in funnel traps were conducted in south-central and interior Alaska in stands of Lutz (Picea xlutzii Little) and white spruce (P.glauca (Moench) Voss). The European spruce beetle (I. typographus (L.)) is believed to be taxonomically similar to I. perturbatus. Commercially available European spruce beetle lures, which include 2-methyl-3buten-2-ol, however, were no more attractive to I. perturbatus than the combination of racemic ipsdienol and 83%-(+)-cis-verbenol. The addition of >97%-(--)-ipsenol to ipsdienol and cis-verbenol, however, was more attractive than the binary combination alone. Racemic ipsenol dispersed from bubble caps did not prevent I. perturbatus from colonizing fresh logging debris. Thus ipsenol was found to function as an attractant rather than as an antiaggregant as previously shown.

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    Citation

    Holsten, Edward H.; Burnside, Roger E.; Seybold, Steven J. 2000. Attractant semiochemicals of the engraver beetle, Ips perturbatus, in south-central and interior Alaska. Res. Pap. PNW-RP-529. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 9 p

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    Keywords

    Bark beetles, Ips perturbatus, semiochemicals, pheromones, aggregation pheromones, antiaggregation pheromones, white spruce, Picea glauca, Lutz spruce, Picea xlutzii, Alaska (interior, south-central)

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