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Shoot Beetle (shoot + beetle)

Distribution by Scientific Domains
Life Sciences100%

Kinds of Shoot Beetle

  • pine shoot beetle
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    Selected Abstracts

    Evaluation of semiochemicals potentially synergistic to ,-pinene for trapping the larger European pine shoot beetle, Tomicus piniperda (Col., Scolytidae)

    JOURNAL OF APPLIED ENTOMOLOGY, Issue 9-10 2004
    T. M. Poland
    Abstract:, The pine shoot beetle, Tomicus piniperda (L.) (Col., Scolytidae) is an exotic pest of pine, Pinus spp., in North America. It is attracted strongly to host volatiles (±)- , -pinene, (+)-3-carene, and , -terpinolene. Attraction to insect-produced compounds is less clear. Other potential attractants include trans -verbenol, myrtenol, myrtenal, nonanal and , -pinene oxide. We conducted a series of field experiments to determine if any of these compounds would increase attraction of T. piniperda to , -pinene, either individually or in various combinations. None of the individual compounds increased attraction. Although several combinations that included trans -verbenol, nonanal, myrtenol, or myrtenal increased attraction, results were variable between experiments. [source]

    Pine shoot beetle, Tomicus piniperda (Col., Scolytidae), responses to common green leaf volatiles

    JOURNAL OF APPLIED ENTOMOLOGY, Issue 2 2000
    T. M. Poland
    We tested the hypothesis that green leaf volatiles (GLVs) disrupt the response of overwintered pine shoot beetles, Tomicus piniperda (L.) to multiple-funnel traps baited with the attractive host volatile ,-pinene. A combination of four GLV alcohols, 1-hexanol (E)-2-hexen-1-ol (Z)-2-hexen-1-ol, and (Z)-3-hexen-1-ol, caused 54 and 36% reduction in the number of pine shoot beetles captured in two separate trapping experiments. Similarly, a combination of the four alcohols plus two GLV aldehydes, hexanal and (E)-2-hexenal, caused 38% reduction in the number of pine shoot beetles captured compared with ,-pinene alone. A blend of the two GLV aldehydes was not disruptive. None of the four GLV alcohols nor the two GLV aldehydes were disruptive when tested individually. The finding that the blend of four GLV alcohols reduced attraction of T. piniperda supports the general hypothesis that GLVs common to nonhost angiosperms are disruptive to conifer-attacking bark beetles (Scolytidae). [source]

    Effects of growth and virulence of associated blue-stain fungi on host colonization behaviour of the pine shoot beetles Tomicus minor and T. piniperda

    PLANT PATHOLOGY, Issue 1 2001
    H. Solheim
    The pine shoot beetles Tomicus minor and T. piniperda are common in the Nordic countries. Of these, T. piniperda may attack and kill living but severely stressed trees, whereas T. minor has never been reported to be individually responsible for killing live trees. Both species are associated with blue-stain fungi: T. minor with Ophiostoma canum and T. piniperda with Leptographium wingfieldii and Ophiostoma minus. The growth of these fungi was studied in phloem and sapwood of live Scots pine trees, on malt agar, and on malt agar under oxygen-deficient conditions. Leptographium wingfieldii was more virulent (i.e. caused more extensive host symptoms) grew more quickly on malt agar, and was less affected by oxygen-deficient growth conditions than either O. minus or O. canum. Ophiostoma canum was least virulent. In low-density inoculations it induced lesions similar to those induced by sterile control inoculations; it grew very slowly on malt agar and stopped growing after ,30 mm under oxygen-deficient conditions. Ophiostoma minus was intermediate in all respects. The different virulence of the blue-stain fungi associated with the two pine shoot beetles may explain the lower level of aggressiveness in T. minor. [source]