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Friday, May 1, 2020 | History

3 edition of Some effects of predaceous birds and ants on the western spruce budworm on conifer seedlings found in the catalog.

Some effects of predaceous birds and ants on the western spruce budworm on conifer seedlings

Some effects of predaceous birds and ants on the western spruce budworm on conifer seedlings

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Published by U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station in [Portland, Or.] .
Written in English

    Subjects:
  • Western spruce budworm -- Biological control,
  • Conifers -- Seeds

  • Edition Notes

    StatementRobert W. Campbell ... [et al.].
    SeriesResearch paper PNW -- 315.
    ContributionsCampbell, Robert W., Pacific Northwest Forest and Range Experiment Station (Portland, Or.), Canada/United States Spruce Budworms Program.
    The Physical Object
    Pagination5 p. :
    ID Numbers
    Open LibraryOL17831149M
    OCLC/WorldCa11419296

    P1: GRA Journal of Chemical Ecology [joec] ppjoec J Style file version June 28th, HABERKERN AND RAFFA mg and mg/d, respectively, at 23–C. Lures were attached to each trap approximately m above the ground. The percentage of the budworm population consumed by birds decreased as budworm numbers increased. Birds consumed 84% of the larvae and pupae where budworm pop-ulations were low, 22% where budworm populations were intermediate between low and high density. Once fourth-instar larvae exceeded individuals/hectare, bird predation was ineffectual.

    range, 18 to 99 percent) than eastern spruce budworm mortality (mean budworm mortality, 17 percent; ra nge, 0 to 48 percent) follo wing temperatures of -2 to -3 °C.   But the western conifer-seed bug is almost certainly not our next great insect menace. In a brief report published last week in the Journal of Medical Entomology, a pair of researchers in Hungary document what they say is the first and only known case of a western conifer-seed bug (Leptoglossus occidentalis) biting a human. Evaluation of Neoaplectana carpocapsae for Biological Control of the Western Spruce Budworm, Choristoneura occidentalis: Ineffectiveness and Persistence of Tank Mixes Harry K. Kaya and Richard C. ReardonCited by: 7.

    The comparative ecology of conifer-feeding budworms in the genus Choristoneura Lederer (Lepidoptera: Tortricidae) in Canada is reviewed with emphasis on publications since Systematics and life history are updated and historical outbreak patterns and their current interpretation summarised. Effects of Ortet Genotype and Western Spruce Budworm Defoliation on Foliar Nutrients in Douglas-fir Clones Karen M. CLANCY USDA Forest Service Research and Development, Rocky Mountain Research Station, Flagstaff, Arizona , USA Zhong CHEN, Thomas E. KOLB School of Forestry, Northern Arizona University, Flagstaff, Arizona , USA. Spruce budworm is mainly a pest of balsam and subalpine firs. Although considered a significant problem in forestry, this insect is an infrequent pest in the landscape. For biology, life history, scouting, and management options.


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Some effects of predaceous birds and ants on the western spruce budworm on conifer seedlings Download PDF EPUB FB2

SyntaxTextGen not activated  Nordlander G () Host pdf in the pine weevil Hylobius abietis: effects of conifer volatiles and added limonene. Entomol Exp Appl – CrossRef Google Scholar Örlander G, Nordlander G, Wallertz K, Nordenhem H () Feeding in the crowns of Scots pine trees by the pine weevil Hylobius by: Residents of Massachusetts may see this large, brown home invader come fall.

First described in California inWestern Conifer Seed Bug (Leptoglossus occidentalis) has quickly moved the WCSB was reported in Iowa and in .Unfortunately, this book can't be printed from the OpenBook. Ebook you need to print pages from this book, we recommend downloading it as a PDF. Visit to get more information about this book, to buy it in print, or to download it as a free PDF.