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    Author(s): Ann M. Lynch
    Date: 2009
    Source: In: Sanderson, H. Reed; Koprowski, John L., editors. The last refuge of the Mt. Graham red squirrel: Ecology of endangerment. Tucson, AZ: University of Arizona Press. p. 318-338.
    Publication Series: Miscellaneous Publication
    PDF: View PDF  (3.52 MB)

    Description

    Spruce aphid is an exotic insect recently introduced to the Pinaleno Mountains. It feeds on dormant Engelmann spruce, and possible effects include tree-growth suppression, tree mortality, and reduction in seed and cone production. Potential longer-term effects include changes in forest structure and species composition - primarily through reduction in Engelmann spruce dominance in spruce-fir and mixed-conifer forcsts. These effects would impact Mt. Graham red squirrel food resources, cache sites, and general habitat requirements.

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    Citation

    Lynch, Ann M. 2009. Spruce aphid, Elatobium abietinum (Walker): Life history and damage to Engelmann spruce in the Pinaleno Mountains, Arizona. In: Sanderson, H. Reed; Koprowski, John L., editors. The last refuge of the Mt. Graham red squirrel: Ecology of endangerment. Tucson, AZ: University of Arizona Press. p. 318-338.

    Keywords

    Engelmann spruce, spruce aphid, Mt. Graham red squirrel, Pinaleno Mountains, Arizona

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