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    Author(s): Daniel R. Miller
    Date: 2001
    Source: The Canadian Entomologist 133: 407-408
    Publication Series: Miscellaneous Publication
    PDF: View PDF  (189 KB)

    Description

    The pine engraver, Ips pini (Say), breeds in the phloem tissue of dead, dying, or downed pines, occasionally attacking standing live trees when populations build up to significant levels following logging activities or infestations by the mountain pine beetle, Dendroctonus ponderosae Hopkins, (Furniss and Carolin 1980). In British Columbia, I. pini uses ipsdienol as an aggregation pheromone to facilitate large aggregations of matted beetles and breeding galleries (Miller et al. 1996). The aggregation pheromones, exo-brevicomin and cis- and trans-verbenol, used by D. ponderosae (Borden et al. 1987; Miller and Lafontaine 1991) interrupt attraction of I. pini to ipsdienol (Miller 1991). Another semiochemical, frontalin, is used by D. ponderosae as a multifunctional pheromone (Borden et al. 1987), enhancing attraction of beetles at low release rates and interrupting attraction at high release rates. I tested the effect of frontalin, over a broad range of release rates, on the attraction of I. pini to ipsdienol-baited traps.

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    Citation

    Miller, Daniel R. 2001. Frontalin interrupts attraction of Ips pini (Coleoptera; Scolytidae) to ipsdienol. The Canadian Entomologist 133: 407-408

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