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    Author(s): William J. Mattson
    Date: 1976
    Source: Research Paper NC-136. St. Paul, MN: U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station
    Publication Series: Research Paper (RP)
    Station: North Central Research Station
    PDF: View PDF  (1.27 MB)

    Description

    Within the crowns of red pine, Pinus resinosa Ait., trees, larvae of the cone insect, Dioryctria disclusa Heinrich, tended to follow the distributions of their foods. Between-tree distributions of larvae, however, were relatable to food distributions in only two of five years. Cone damage/tree by D. disclusa increased linearly with cone abundance per tree when insect populations were large relative to cones. Percentage cone damage/tree was not significantly correlated with cone abundance.

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    Citation

    Mattson, William J. 1976. Distribution of the cone insect, Dioryctria disclusa, in red pine. Research Paper NC-136. St. Paul, MN: U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station

    Keywords

    negative binomial, sampling, cone damage, male strobili, model

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