Featured Research

from universities, journals, and other organizations

ORNL Instrument Could Spell Doom For Asian Beetles

Date:
October 30, 2000
Source:
Oak Ridge National Laboratory
Summary:
An invasion of tree-destroying Asian Longhorned Beetles could be slowed or perhaps stopped with a larvae detection system being developed by researchers at the Department of Energy's Oak Ridge National Laboratory (ORNL). Larvae from the beetles, which are native to China and Korea, are inadvertently imported into the United States nestled inside the wood of shipping crates containing a host of products.

OAK RIDGE, Tenn., Oct. 27, 2000 -- An invasion of tree-destroying Asian Longhorned Beetles could be slowed or perhaps stopped with a larvae detection system being developed by researchers at the Department of Energy's Oak Ridge National Laboratory (ORNL).

Larvae from the beetles, which are native to China and Korea, are inadvertently imported into the United States nestled inside the wood of shipping crates containing a host of products. Within days of their arrival, beetles are out boring into trees, where they lay eggs. The larvae start eating the tree's cambium, the layer that generates new cells, disrupting its nutrient-transporting vessels. Eventually, the trees die. It's a problem that has a lot of people concerned.

"These beetles, which grow to more than an inch in length, can cause billions of dollars in damage to forests and to the maple syrup, lumber and tourism industries," said Cyrus Smith of ORNL's Instrumentation and Controls (I&C) Division.

In the U.S., the beetles' favorite targets are maples, horsechestnuts, black locusts, elms, birches, willows and poplars. Already, they have infested thousands of trees in New York and Chicago. The only effective means to eliminate the beetle is to cut infested trees and destroy them by chipping or burning.

Visual inspection of crates and trees is difficult and ineffective, so Smith and colleagues at ORNL are developing a hand-held instrument that identifies the vibrations made by the larvae as they feed on the wood. Their goal is to develop an instrument that can distinguish the Asian Longhorned Beetle larvae from other insects and identify the larvae at different stages of maturity.

To develop the instrument, Smith, Glenn Allgood and Dale Treece, also of the I&C Division, are gathering vibration data from these beetles and other insects as they feed. Researchers are analyzing the information and developing algorithms -- mathematical solutions to solve complex problems -- to help identify the presence of telltale characteristics.

"We'll then incorporate these algorithms into a prototype instrument that can detect the bugs and determine if the infestation is by the Asian Longhorned Beetle," Smith said.

Initial results gained with acoustic sensors and a laptop computer loaded with the algorithms are encouraging.

"Our algorithms have been successful in detecting larvae in sample logs and in trees in natural settings," Smith said, "but we still need to analyze data from various larvae stages, different woods and different insects to see if our algorithms can discriminate these effects."

Researchers have discovered that because young larvae feed at the wood-bark interface, where the material is softer, the vibrations are smaller in amplitude. Older larvae feed on the interior wood and produce larger amplitude vibrations, which are easier to detect. This is significant and should help in detecting larvae at ports of entry because crating material is made from interior wood that contains more mature larvae.

Once the operation and accuracy of the prototype instrument have been documented in the field, the technology will be transferred to an industrial partner for commercialization and miniaturization.

ORNL is a DOE multiprogram facility operated by UT-Battelle. The project is funded by the Department of Agriculture's Forest Service North Central Research Station in East Lansing, Mich.


Story Source:

The above story is based on materials provided by Oak Ridge National Laboratory. Note: Materials may be edited for content and length.


Cite This Page:

Oak Ridge National Laboratory. "ORNL Instrument Could Spell Doom For Asian Beetles." ScienceDaily. ScienceDaily, 30 October 2000. <www.sciencedaily.com/releases/2000/10/001030082615.htm>.
Oak Ridge National Laboratory. (2000, October 30). ORNL Instrument Could Spell Doom For Asian Beetles. ScienceDaily. Retrieved September 19, 2014 from www.sciencedaily.com/releases/2000/10/001030082615.htm
Oak Ridge National Laboratory. "ORNL Instrument Could Spell Doom For Asian Beetles." ScienceDaily. www.sciencedaily.com/releases/2000/10/001030082615.htm (accessed September 19, 2014).

Share This



More Plants & Animals News

Friday, September 19, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Raw: Elephant Undergoes Surgery in Tbilisi Zoo

Raw: Elephant Undergoes Surgery in Tbilisi Zoo

AP (Sep. 18, 2014) Grand the elephant has successfully undergone surgery to remove a portion of infected tusk at Tbilisi Zoo in Georgia. British veterinary surgeons used an electric drill to extract the infected piece. (Sept. 18) Video provided by AP
Powered by NewsLook.com
Chimp Violence Study Renews Debate On Why They Kill

Chimp Violence Study Renews Debate On Why They Kill

Newsy (Sep. 17, 2014) The study weighs in on a debate over whether chimps are naturally violent or become that way due to human interference in the environment. Video provided by Newsy
Powered by NewsLook.com
Some Tobacco Farmers Thrive Amid Challenges

Some Tobacco Farmers Thrive Amid Challenges

AP (Sep. 16, 2014) The South's tobacco country is surviving, and even thriving in some cases, as demand overseas keeps growers in the fields of one of America's oldest cash crops. (Sept. 16) Video provided by AP
Powered by NewsLook.com
Scientists Given Rare Glimpse of 350-Kilo Colossal Squid

Scientists Given Rare Glimpse of 350-Kilo Colossal Squid

AFP (Sep. 16, 2014) Scientists say a female colossal squid weighing an estimated 350 kilograms (770 lbs) and thought to be only the second intact specimen ever found was carrying eggs when discovered in the Antarctic. Duration: 00:47 Video provided by AFP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins