Reclaiming Hemlocks and Firs: A Symposium

The Alliance for Saving Threatened Forests (ASTF) is hosting a one-day (9a.m.-5p.m.) symposium reporting on host resistance research to the hemlock and balsam woolly adelgids.  The conference will take place October 26th at the Haywood County Extension Center, across from the Mountain Research Station (MRS) in Waynesville, NC. The day will include an afternoon tour [...]

By | August 24th, 2011|Balsam woolly adelgid, Hemlock woolly adelgid, News|Comments Off on Reclaiming Hemlocks and Firs: A Symposium

Posters and presentation from the North American Forest Insect Work Conference

The North American Forest Insect Work Conference met May 9-12, 2011 . NAFIWC meets only once every five years. Below are the titles and links for one presentation and five posters from this year’s conference. Presentation: Developing Hemlocks Resistant to Hemlock Woolly Adelgid K. L. F. Oten, L. N. Walker-Lane, R. M. Jetton, N. Kaur, [...]

By | August 9th, 2011|Balsam woolly adelgid, Hemlock woolly adelgid|Comments Off on Posters and presentation from the North American Forest Insect Work Conference

Hemlock Woolly Adelgid Resistance

Learn more about research on hemlock woolly adelgid from a researcher in Rhode Island. HWA Presentation from Rhode Island (PDF) (33 MB file)

By | April 19th, 2011|Hemlock woolly adelgid|Comments Off on Hemlock Woolly Adelgid Resistance

Beauty and the Beast: Investigating Host Resistance of Hemlock

This presentation illustrates some of our findings on existing host resistance to hemlock woolly adelgid in native hemlock stands and exotic hemlocks. The author, Kelly Oten, graduate research and teaching assistant, won third place for the presentation at the student competition during the Southeastern Branch Entomological Society of America meeting this year. HWA resistance PDF [...]

By | April 19th, 2011|Hemlock woolly adelgid|Comments Off on Beauty and the Beast: Investigating Host Resistance of Hemlock

USDA Develops Hemlock Hybrids Tolerant of HWA

New hemlock hybrids that are tolerant to the invasive insect known as hemlock woolly adelgid have been created by U.S. Department of Agriculture (USDA) scientists. Geneticist Richard Olsen and horticulturist Sue Bentz of USDA’s Agricultural Research Service (ARS) teamed up with Forest Service entomologist Mike Montgomery to breed and select these tolerant hybrids. Olsen and [...]

By | November 12th, 2010|Hemlock woolly adelgid|Comments Off on USDA Develops Hemlock Hybrids Tolerant of HWA

Investigating Host Resistance Using Scanning Electron Microscopy

by Kelly F. Oten1, Allen C. Cohen2, John B. Strider1, and Fred P. Hain1 Abstract This study uses scanning electron microscopy (SEM), a surface-imaging technique, to investigate feeding behaviors of the hemlock woolly adelgid (HWA), Adelges tsugae Annand. Understanding feeding behavior directly relates to the pest-host interactions which can elucidate resistance mechanisms in hemlocks. Salivary [...]

By | October 27th, 2010|Hemlock woolly adelgid|Comments Off on Investigating Host Resistance Using Scanning Electron Microscopy

Effect of Hemlock Woolly Adelgid (HWA) Infestation on Water Relations of Carolina and Eastern Hemlock

The Effect of Hemlock Woolly Adelgid (HWA) Infestation on Water Relations of Carolina and Eastern Hemlock: Can Ecophysiological Investigation of Tree Water Relations Improve Silvicultural Management of the HWA? Authors:  Rivera, Laura N.1, Jean-Christophe Domec1,2, John Frampton1, Fred. Hain3 and John S. King1 In eastern North America, hemlock woolly adelgid (HWA; Adelges tsugae Annand) is [...]

By | October 27th, 2010|Hemlock woolly adelgid|Comments Off on Effect of Hemlock Woolly Adelgid (HWA) Infestation on Water Relations of Carolina and Eastern Hemlock

Hemlock Woolly Adelgid Resources

View Hemlock Woolly Adelgid resources here.

By | October 21st, 2010|Hemlock woolly adelgid|Comments Off on Hemlock Woolly Adelgid Resources

Balsam Woolly Adelgid Resources

View Balsam Woolly Adelgid resources here.

By | October 21st, 2010|Balsam woolly adelgid|Comments Off on Balsam Woolly Adelgid Resources

Production & Evaluation of Hemlock Resistance

Production and Evaluation of Eastern Hemlocks (Tsuga canadensis) Potentially Resistant to the Hemlock Woolly Adelgid (Adelges tsugae) Todd Caswell, Richard Casagrande, Brian Maynard, and Evan Preisser University of Rhode Island, Kingston, RI 02881 Abstract. As the hemlock woolly adelgid (HWA) has spread throughout the forests of the northeast, it has killed countless eastern hemlocks while [...]

By | June 25th, 2010|Hemlock woolly adelgid|Comments Off on Production & Evaluation of Hemlock Resistance