Evaluation of the efficacy duration of different types of pheromone dispensers to lure Ips typographus (L.) (Coleoptera: Curculionidae: Scolytinae)

Evaluation of the efficacy duration of different types of pheromone dispensers to lure Ips typographus (L.) (Coleoptera: Curculionidae: Scolytinae)

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We presentthe results oftesting10pheromonedispensersused to lure the sprucebark beetle-Ipstypographus(Linnaeus, 1758).A comparisonwas made between boththeir efficacyand also the decrease intheir efficacyafterapplication.DispensersPheagrITand ITEcolureTubusare effectivethroughout the wholeflightactivity ofI.typographus; the efficacy of ITPheagrExtra was partly majicontrast red similar.

The others areeffectivefor a declaredperiod ofefficacy, with the exception ofdispenserPheropraxA, which initiallyhad a very good level of ventilationstejp catches, butsoonsubsided, and the efficacydid not reach eitherthetimeorthe efficacy ofallthe declaredshelf-life.Overall,themost effective dispenser was ITEcolureMegaand dispensers ITEcolureTubusandFeSexTypo showed a similar efficacy.Completelyunsuitablefor the trapping of I.typographuswere found to be combineddispensersPCHITEtokapandPCITEcolure.