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The pathogen causing Dutch elm disease makes host trees attract insect vectors
Dutch elm disease is caused by the fungal pathogen Ophiostoma novo-ulmi which is transmitted by the native elm bark beetle, Hylurgopinus rufipes. We have found that four semiochemicals (theExpand
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Green leaf volatiles as antiaggregants for the mountain pine beetle,Dendroctonus ponderosae Hopkins (Coleoptera: Scolytidae)
We tested the hypothesis that green leaf volatiles act as antiaggregants for the mountain pine beetle (MPB),Dendroctonus ponderosac Hopkins. In coupled gas chromatographic-electroantennographicExpand
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(Z,Z)-4,7-Tridecadien-(S)-2-yl Acetate: Sex Pheromone of Douglas-Fir Cone Gall Midge, Contarinia oregonensis
Our objectives were to identify and field test the sex pheromone of female Douglas-fir cone gall midge, Contarinia oregonensis (Diptera: Cecidomyiidae). Coupled gasExpand
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Natural selection and divergence in mate preference during speciation
Sexual isolation can evolve due to natural selection against hybrids (reinforcement). However, many different forms of hybrid dysfunction, and selective processes that do not involve hybrids, canExpand
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Dispersal by bagworm larvae, Metisa plana: effects of population density, larval sex, and host plant attributes
Abstract 1. The work reported here investigated the incidence of dispersal by bagworm larvae Metisa plana (Walker) (Lepidoptera: Psychidae), a species with apterous females and winged males.
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Re-analysis of pheromone-mediated aggregation behaviour of European earwigs
Abstract Aggregation of the European earwig, Forficula auricularia L. (Dermaptera: Forficulidae), is known to be, in part, a response to aggregation pheromone. However, many aspects of pheromoneExpand
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(E)- and (Z)-6-nonen-2-one: Biosynthetic precursors ofEndo- andexo-brevicomin in two bark beetles (Coleoptera: Scolytidae)
The ability of (E)- and (Z)-6-nonen-2-one to serve as precursors of the common scolytid pheromonesEndo- andexo-brevicomin was examined in vivo. When mountain pine beetles (MPB),DendroctonusExpand
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(2R,7S)-Diacetoxytridecane: Sex Pheromone of the Aphidophagous Gall Midge, Aphidoletes aphidimyza
In a recent study, evidence was presented that females of the aphidophagous midge Aphidoletes aphidimyza (Rondi) (Diptera: Cecidomyiidae) release a sex pheromone to attract mates. Our objectives wereExpand
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(S,S)-2,12-, (S,S)-2,13-, and (S,S)-2,14-Diacetoxyheptadecanes: Sex Pheromone Components of Red Cedar Cone Midge, Mayetiola thujae
We identified, synthesized, and field-tested the sex pheromone of female red cedar cone midge Mayetiola thujae (Hedlin) (Diptera: Cecidomyiidae), a pest insect in red cedar Thuja plicata seedExpand
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