adelgid


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References in periodicals archive ?
Global climate change is increasing the rate of range expansion for many species across the globe, creating an urgency to understand the variables involved in predicting the spread of the hemlock woolly adelgid (HWA; Adelges tsugae) throughout forests of the eastern United States.
Impacts of trunk and soil injections of low rates of imidacloprid on hemlock woolly adelgid (Hemiptera: Adelgidae) and eastern hemlock (Pinales: Pinaceae) health.
The hemlock woolly adelgid is a poppyseed-sized invasive insect that hitched a ride from southern Japan - probably on an ornamental hemlock tree - and landed in Richmond, Va.
Kenneth Gooch, Forest Health Program supervisor for the Department of Conservation and Recreation, collects 10 sample branches of Hemlock woolly adelgid on Hemlock trees at Wells State Park in Sturbridge, in upper right photo.
The hemlock woolly adelgid lives on the sap of hemlocks.
caroliniana Engelm) are currently declining rapidly due to infestation by the hemlock woolly adelgid (HWA, Adelges tsugae Annand) and little regeneration is expected (Orwig and Foster, 1998; Preisser et al.
In the same ecological zones of the pine another adelgid species, Pterochloroides persicae, commonly called Peach Trunk Aphid (PTA) is a serious pest of many pomes and stone fruits acquiring the resistance against many groups of pesticides (Ateyyat and Abu- Darwish et al.
Eastern hemlock is threatened with decline due to the hemlock woolly adelgid (Adelges tsugae) with outbreaks causing widespread mortality of hemlock in Connecticut and elsewhere in the Appalachian Mountains (Orwig et al.
But over the last few decades, the eastern and Carolina hemlocks have been under attack by a small sucking insect called the hemlock woolly adelgid (Adelges tsugae), or HWA.
Hemlocks, for example, are threatened by the hemlock woolly adelgid, a tiny insect pest that is moving northward with climate change and has already wreaked havoc on hemlocks south of New York.
The latest threat to the forest emerged in 2002 when another Asian woolly adelgid that kills hemlock, another keystone species of the forest, entered the park.
Eastern hemlock is currently being threatened by the hemlock woolly adelgid (Adelges tsugae), a defoliating insect.
Well-known examples of alien insect invasions include the chestnut blight disease, the Dutch elm disease, the gypsy moth, the Asian longhorn beetle, the Eurasian pine shoot beetle, and the hemlock woolly adelgid (Haack and Poland 2001, Fernandez 2003).
Over the past two decades, several exotic pests, such as the balsam woolly adelgid, Adelges piceae (Rathzeburg), beech scale, Cryptococcus fagisuga Lind.