Hemlock woolly adelgid
Spatial Tools for Managing the Hemlock Woolly Adelgid in the Southern Appalachians
... the hemlock woolly adelgid has made significant inroads into the southern ...native hemlock species are not resistant to the pest, timely application of control measures is critical to ...
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Host-Plant Selection by the Hemlock Woolly Adelgid, Adelges tsugae Annand: Sensory Systems and Feeding Behavior in Relation to Physical and Chemical Host-Plant Characteristics.
... The hemlock woolly adelgid, Adelges tsugae Annand (Hemiptera: Adelgidae) is an invasive pest that threatens survival of eastern and Carolina hemlocks in the eastern ...resistant hemlock on the ...
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Changes in old-growth and second-growth eastern hemlock (Tsuga canadensis) communities in the southern Appalachians after the introduction of the hemlock woolly adelgid, Adelges tsugae
... Non-metric multidimensional scaling ordinations were calculated in PC-ORD 5 using cover values and the Sorenson distance measure on autopilot mode. As described in the methods, this ordination arranges plots along axes ...
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Evaluating Techniques for Artificially Infesting Hemlocks (Tsuga spp.) with the Hemlock Woolly Adelgid (Adelges tsugae) for Genotype Resistance Screening.
... Engelm.) hemlock populations in eastern North America are devastated by the invasive hemlock woolly adelgid (HWA, Adelges tsugae ...crawlers. Adelgid density was analyzed for small ...
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The Effect of Hemlock Woolly Adelgid Infestation on Water Relations of Carolina and Eastern Hemlock
... America, hemlock woolly adelgid (HWA; Adelges tsugae Annand) is an exotic insect pest from Asia that is causing severe decimation of native eastern hemlock (Tsuga canadensis ...Carolina ...
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Economic Impact of the Hemlock Woolly Adelgid on Residential Property Values.
... The hemlock woolly adelgid (Adelges tsugae Annad) is an exotic insect pest that causes mortality to eastern and Carolina hemlocks (Tsuga canadensis, Tsuga caroliniana ...old hemlock stands as ...
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Spatial Distribution of Hemlock Woolly Adelgid Induced Hemlock Mortality in the Southern Appalachians
... Hemlock woolly adelgid (Adelges tsugae Annand, HWA) outbreaks are posing a major threat to eastern hemlock (Tsuga canadensis ...Carolina hemlock (Tsuga caroliniana ...induced ...
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Evaluating Southern Appalachian Forest Dynamics without Eastern Hemlock: Consequences of Herbivory by the Hemlock Woolly Adelgid
... Eastern hemlock (Tsuga canadensis Carriére) and the Carolina hemlock (Tsuga caroliniana Engelmann) are ecologically important tree species in eastern North America forests that are currently threatened by ...
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Biological Control, Host Resistance, and Vegetative Propagation: Strategies and Tools for Management of the Invasive Hemlock Woolly Adelgid, Adelges tsugae Annand.
... the hemlock borer (Melanophila fulvoguttata Harris) and the hemlock looper (Lambdina fiscellaria ...elongate hemlock scale (Fiorinia externa Ferris) and the cryptomeria scale (Aspidiotus cryptomeriae ...
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Developing Artificial Rearing Techniques for Hemlock Woolly Adelgid, Adelges tsugae and Balsam Woolly Adelgid, Adelges piceae; Artificial Infestation and Epicuticular Wax Study of Carolina Hemlock, Tsuga caroliniana, Provenances.
... Severe adelgid feeding prevents the spring flush of new growth, causes desiccation of existing needles, discoloration, and needle drop from the ...of hemlock trees to extract carbohydrates (McClure 1991), ...
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Establishing the Requirements for Developing Artificial Rearing Techniques for the Balsam Woolly Adelgid, Adelges piceae.
... that hemlock woolly adelgid’s may use extra-oral digestion when feeding, where the insects’ salivary enzymes pre-digest solid components of cells, then the insect ingests a concentrated nutrient “broth” ...
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Allozyme variation and recent evolutionary history of eastern hemlock (Tsuga canadensis) in the southeastern United States
... Eastern hemlock (Tsuga canadensis ...Eastern hemlock forests, however, are being devastated by the hemlock woolly adelgid (Adelges tsugae Annand) (McClure et ...of hemlock from ...
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Using Climate and Genetic Diversity Data to Prioritize Conservation Seed Banking for Imperiled Hemlock Species.
... Hemlock woolly adelgid (Adelges tsugae Annand) (HWA) is an invasive forest insect sweeping across the native range of eastern (Tsuga canadensis ...eastern hemlock extent and pushing Carolina ...
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Chemical Biology of Resistant and Susceptible Species of Abies to Balsam Woolly Adelgid (Adelges piceae)
... been indicated as a possible management tool for house dust and stored food mites (Lee et al. 2009). Studying variation in Douglas-fir terpene content throughout the growing season, increases in bornyl acetate ...
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Large-scale patterns of insect and disease activity in the conterminous United States and Alaska from the national insect and disease detection survey database, 2010
... These surveys identify areas of mortality and defoliation caused by insect and pathogen activity, although some important forest insects (e.g., emerald ash borer and hemlock woolly adelgid), diseases ...
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Effects of Atmospheric Pollution on High-Elevation Fauna in the Southern Appalachians.
... adelgid (Adelges piceae; Pyne and Durham 1993, Nicholas et al. 1999, Jenkins 2003) and receiving some of the highest rates of nitrogen and sulfur deposition of monitored locations in North America. Underlying ...
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Epiphytic lichens along gradients in topography and stand structure in western Oregon, USA
... (Peterson 2000; Rosso 2000). In our study, lichens typically found on hardwood trees and shrubs included species in the genera Evernia, Hypotrachyna, Lobaria, Melanelia, Nephroma, Parmelia, Pseudocyphellaria, Ramalina, ...
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Assessing Carolina Hemlock (Tsuga caroliniana Engelm.) Population Genetic Structure and Diversity in the Southern Appalachians using Microsatellite Markers.
... are adelgid-free areas with suitable weather, climate, and soil conditions for Carolina ...Carolina hemlock conservation banks have been initiated in Chile, Brazil and North Carolina, and more plantings are ...
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The chemical ecology, genetics and impact of the European earwig in apple and cherry orchards
... of woolly apple aphid (WAA) and intraguild compatibility with the parasitoid Aphelinus mali in apple orchards, the impact earwigs have upon sweet cherry production and the chemical ecology of ...
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Structural analysis of the genomes of gibbon ape and woolly monkey leukosis viruses.
... To determine the degree of sequence identity between two viral RNAs, equal amounts of labeled RNase T1-resistant oligonucleotides from two genomes were mixed before application to a two-[r] ...
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