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Nitrogen Concentration in Mountain Pine Beetle Larvae Reflects Nitrogen Status of the Tree Host and Two Fungal Associates
ABSTRACT Individual lodgepole pines (Pinus contorta) were fertilized with urea at nitrogen (N) inputs equivalent to 0, 315, or 630 kg/ha. Four months after application of the fertilizer, inner barkExpand
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Predation of Gypsy Moth (Lepidoptera: Lymantriidae) Pupae in Three Ecosystems Along the Southern Edge of Infestation
Abstract The predation potential of small mammals, in particular mice, Peromyscus spp., and invertebrates, was evaluated from 1992 to 1995 near the leading edge of gypsy moth, Lymantria dispar (L.),Expand
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The Influence of Self-Marking With Fluorescent Powders on Adult Bark Beetles (Coleoptera: Scolytidae)
Under laboratory conditions, Dendroctonus frontalis Zimmermann and Ips grandicollis (Eichhoff) adults became self-marked with fluorescent powders upon emergence from treated logs. The technique pro...
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Qualitative Examination of the Hypersensitive Response of Loblolly Pine, Pinus taeda L., Inoculated with Two Fungal Associates of the Southern Pine Beetle, Dendroctonus frontalis Zimmermann
Loblolly pine, Pinus taeda L., responded to wounding and wounding plus inoculation with two fungal associates of the southern pine beetle (SPB), Dendroctonus frontalis Zimmermann by forming aExpand
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Defence syndromes in lodgepole - whitebark pine ecosystems relate to degree of historical exposure to mountain pine beetles.
Warming climate is allowing tree-killing bark beetles to expand their ranges and access naïve and semi-naïve conifers. Conifers respond to attack using complex mixtures of chemical defences that canExpand
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Susceptibility of Trees to Southern Pine Beetle, Dendroctonus frontalis (Coleoptera: Scolytidae)
Loblolly and shortleaf pines on one study site in the North Carolina piedmont were subjected to attack by varying numbers of southern pine beetle (SPB), Dendroctonus frontalis Zimmermann. ShortleafExpand
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Potential Enhancement of the Gypsy Moth (Lepidoptera: Lymantriidae) Nuclear Polyhedrosis Virus with the Triterpene Azadirachtin
Second-instar gypsymoth, Lymantria dispar (L.), larvae were placed on semisynthetic diet and white oak, Quercus alba L., seedlings that had been surface-treated with azadirachtin and gypsy mothExpand
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Four parameters of the wound response of loblolly and shortleaf pines to inoculation with the blue-staining fungus associated with the southern pine beetle
The wound response of loblolly, Pinus taeda L., and shortleaf, P. echinata Mill., pine was examined for 14 days following wounding and inoculation of the trees with Ceratocystis minor (Hedgecock)Expand
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Blankophor BBH as an Enhancer of Nuclear Polyhedrosis Virus in Arborist Treatments Against the Gypsy Moth (Lepidoptera: Lymantriidae)
Doses of a commercial candidate formulation of gypsy moth nuclear polyhedrosis virus (LdMNPV) were applied with and without several concentrations of an enhancing adjuvant, Blankophor BBH., toExpand
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Predation of gypsy moth (Lepidoptera : Lymantriidae) pupae by invertebrates at low small mammal population densities
A census of small mammal populations was taken, and freeze-dried gypsy moth, Lymantria dispar (L.), pupae were placed at 6 sites near the leading edge of moth spread into the southeastern UnitedExpand
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