Navigation Links
UGA study offers hope for hemlock attack
Date:1/10/2012

Athens, Ga. Thousands of broken trees line the banks of the Chattooga River. The dead gray stabs were once evergreen monsters offering shade to trout and picturesque views to visitors. These Eastern hemlocks are dying rapidly, and University of Georgia researchers are working to save them.

One tiny insect, the hemlock woolly adelgid, is to blame. The Asian insect first appeared in the eastern U.S. in Richmond, Va., in the 1950s. In 2003, it crossed the river from South Carolina and started feeding on Georgia trees.

The tiny pests suck up cells from the tree's needles, which prevent them from transferring water and conducting photosynthesis. The first obvious sign of an infestation is thinning foliage. Needles fall off, and the crown starts thinning. From a distance, trees look gray.

Researchers working to find ways to combat the adelgid have focused on releasing ladybird beetles, which eat adelgids. A new UGA study brings some of the logistical issues to light and offers hope for more successful control in the future. The results were published in the December issue of the Journal of Economic Entomology.

"Because the trees being attacked live mostly in remote forests where insecticide application is impractical, predators may be the best hope for tree survival," said Shimat Joseph, former UGA doctoral student who authored the journal article.

Previous studies have shown widely released predator beetles, Laricobius nigrinus and Sasajiscymnus tsugae, have been successful in controlling hemlock wooly adelgid populations, but they have not survived well through multiple seasons.

"Adelgid populations are not concentrated where we are releasing the predators," Joseph said. "Previous studies assumed populations are evenly distributed, but we are seeing that is not the case."

According to the study, adelgid populations tend to be more abundant in the upper crown, especially early in the infes
'/>"/>

Contact: Kris Braman
kbraman@uga.edu
770-228-7236
University of Georgia
Source:Eurekalert

Page: 1 2

Related biology news :

1. University of Houston wins NASA grant to study Congo River Basin
2. Study reveals enzyme function, could help find muscular dystrophy therapies
3. Study finds age-related effects in MS may be reversible
4. Study finds air pollution linked to diabetes and hypertension in African-American women
5. Scripps Research Scientist wins pair of grants to study critical component of memory
6. Study uncovers a molecular maturation clock that modulates branching architecture in tomato plants
7. Study examines how diving marine mammals manage decompression
8. UMDs START gets $3.6 million to study terrorisms human causes and consequences
9. Human skull study causes evolutionary headache
10. Study reveals turn signals for neuron growth
11. Hellbender salamander study seeks answers for global amphibian decline
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/11/2014)... have explored two different ways that allow unprecedented ... the formation of oxygen molecules in photosynthesis. The ... journal Nature Communications . , "The new ... for water oxidation, which are key components for ... of solar energy in fuels like hydrogen, ethanol ...
(Date:7/11/2014)... under the normal circumstances, astrocytes participate in ... environment, and exhibit therapeutic and repairing effects ... studies have found that nerve cells differentiated ... have reduced viability, which produces influences on ... Kailuan General Hospital, Hebei United University, China ...
(Date:7/10/2014)... In Santa Fe, Albuquerque, and other major cities in ... watered with treated municipal wastewater rather than precious potable ... more than 40% of all golf courses receive treated ... courses. , Additionally, golf courses and homeowners alike ... nutrient in fertilizer is nitrate. A New Mexico State ...
Breaking Biology News(10 mins):Molecular snapshots of oxygen formation in photosynthesis 2'Tailored' water -- the latest in lawn care 2
... non-native mussels in the Great Lakes has caused ... two of the planet,s largest freshwater lakes, according ... The blitzkrieg advance of two closely related species ... of their life-supporting algae, resulting in a remarkable ...
... 2011 A natural hormone known to inhibit aging can ... researchers have demonstrated. Scientists led by Dr. Makoto Kuro-o, ... hormone Klotho suppressed both renal fibrosis a common complication ... The findings are available online in the Journal of ...
... warming may be the greatest challenge of the present generation. ... the average citizen often wonders what he or she can ... FROM GERMANY,S SUCCESS IN HARNESSING CLEAN ENERGY" (Prometheus Books, $19) ... in the making veteran science and technology journalist Bob ...
Cached Biology News:Invasive mussels causing massive ecological changes in Great Lakes 2Invasive mussels causing massive ecological changes in Great Lakes 3Anti-aging hormone Klotho inhibits renal fibrosis, cancer growth 2Switching to solar 2
(Date:7/11/2014)... 11, 2014 Research and Markets  has ... Market - Global Industry Analysis, Size, Share, Growth, Trends ... http://photos.prnewswire.com/prnh/20130307/600769 ... (either DNA or RNA) into cells. This technology helps ... cells and protein metabolism by affecting the nuclear genes. ...
(Date:7/11/2014)... AZ (PRWEB) July 11, 2014 ... device company specializing in the soft tissue reconstruction ... All-Suture Anchor System for surgeries involving the shoulder ... fixation through a novel, inserter-controlled deployment method. The ... to partial deployment, anchor pull-out, or anchor displacement ...
(Date:7/10/2014)... Terascala, the industry leader in HPC ... former vice president of product management for Flexera Software, ... marketing. Terascala’s software when combined with leading compute and ... performance and most reliable solutions for processing big data. ... expansion and broaden its product portfolio. His leadership in ...
(Date:7/10/2014)... July 10, 2014 Senior supply chain ... professional associations, addressed the challenges of “Reducing Cost, Lead ... Industries” through strategic sourcing. Describing the partnership of the ... Supply Chain Management Institute ( SCMI) of the ... June 24 at the Kroc Institute of Peace and ...
Breaking Biology Technology:International Transfection Technology Market - Industry Analysis, Size, Share, Growth, Trends and Forecast to 2019 2Cayenne Medical Launches SureLock™ All-Suture Anchor System for Shoulder and Extremity Surgery 2Cayenne Medical Launches SureLock™ All-Suture Anchor System for Shoulder and Extremity Surgery 3Terascala Expands Executive Team 2Terascala Expands Executive Team 3Biotech & Biopharm Supply Chain Management Executives Launch BSMA in San Diego 2Biotech & Biopharm Supply Chain Management Executives Launch BSMA in San Diego 3Biotech & Biopharm Supply Chain Management Executives Launch BSMA in San Diego 4
... of Convertible Preferred Stock -, DALLAS, Jan. ... announced today that it has executed agreements,for $2.7 ... into agreements,with institutional and accredited investors to purchase ... the Company,s Series A Convertible,Preferred Stock. This equity ...
... Healionics Corporation, a,provider of tissue regeneration and ... it has raised $1.7 million,in a Series A ... Carl Lombardi, former CEO of SpaceLabs Medical and ... & Rejuvenation Center., "We are pleased to ...
... in cash at year end; no equity financings expected ... disease programs to continue in,2008; latest data for all ... - Expansion of research and development investment ... lysosomal diseases in 2008, CRANBURY, N.J., Jan. 29 ...
Cached Biology Technology:Access Pharmaceuticals Announces $2.7 Million New Equity 2Access Pharmaceuticals Announces $2.7 Million New Equity 3Healionics Corporation Completes Series A Financing 2Amicus Therapeutics Announces Fourth Quarter and Full Year 2007 Financial Results & Program Advancements 2Amicus Therapeutics Announces Fourth Quarter and Full Year 2007 Financial Results & Program Advancements 3Amicus Therapeutics Announces Fourth Quarter and Full Year 2007 Financial Results & Program Advancements 4Amicus Therapeutics Announces Fourth Quarter and Full Year 2007 Financial Results & Program Advancements 5Amicus Therapeutics Announces Fourth Quarter and Full Year 2007 Financial Results & Program Advancements 6Amicus Therapeutics Announces Fourth Quarter and Full Year 2007 Financial Results & Program Advancements 7Amicus Therapeutics Announces Fourth Quarter and Full Year 2007 Financial Results & Program Advancements 8Amicus Therapeutics Announces Fourth Quarter and Full Year 2007 Financial Results & Program Advancements 9Amicus Therapeutics Announces Fourth Quarter and Full Year 2007 Financial Results & Program Advancements 10Amicus Therapeutics Announces Fourth Quarter and Full Year 2007 Financial Results & Program Advancements 11Amicus Therapeutics Announces Fourth Quarter and Full Year 2007 Financial Results & Program Advancements 12Amicus Therapeutics Announces Fourth Quarter and Full Year 2007 Financial Results & Program Advancements 13Amicus Therapeutics Announces Fourth Quarter and Full Year 2007 Financial Results & Program Advancements 14