Mountain pine beetles devastating lodgepole pine stands across the West might best be kept in check with aerial application of flakes containing a natural substance used in herbal teas that the insects release to avoid overcrowding host trees, according to a team of scientists.
Findings from the U.S. Forest Service-funded study appear in the February issue of Forest Ecology and Management. The study was conducted in California and Idaho, and showed how applications of laminated flakes containing a substance called verbenone resulted in a three-fold reduction in insect attack rates, compared to areas where they were not applied.
The technique could provide a way to treat infestations on a large scale and limit further spread into millions of acres of trees made vulnerable because of climate change, overcrowding and fires.
It could also be an alternative to insecticides, which can have adverse environmental effects. Thinning of some overstocked forests is still recommended to reduce susceptibility to bark beetles. But, the flakes can provide some protection for the dense, old-growth stands required by wildlife, according to the scientists.
The largest beetle outbreak in North American history is now occurring in Canada, where more than 22 million acres are affected, according to the British Columbia Ministry of Forests and Range. Outbreaks of this magnitude exacerbate global warming by converting forests from carbon sinks to carbon sources.
Scientists have known for more than a decade that one of the safest strategies for deterring such infestations was through application of verbenone, which beetles release to inhibit aggregation by members of their own species, and the Food and Drug Administration has approved for use as a flavor ingredient. But, manual application of verbenone is difficult where infestations cover thousands of acres in remote, steep terrain.
"Verbenone flakes gave significant protection from mountain
'/>"/>
| Contact: Roland Giller rgiller@fs.fed.us 510-559-6327 US Forest Service, Pacific Southwest Research Station Source:Eurekalert |
Related biology news :
1. Pioneering landscape-scale research releases first findings
2. LSUSHC researchers find potential new target for hypertension treatment
3. New asthma research opposes current drug treatment, says UH prof
4. Researchers describe protease inhibitor that may aid in diabetic retinopathy treatment
5. Research shows cells inactive state is critical for effectiveness of cancer treatment
6. The quest for specific anti-inflammatory treatment
7. Promising new drug being evaluated as possible treatment option for fragile X syndrome
8. Miscarriage and infertility treatment increase pre-eclampsia risk
9. UC Davis team refines cancer treatments to reduce potential nerve damage
10. In just 5 years, gene discovery to clinical trial of potential treatment
11. Leeds research points to new therapy for hepatitis C treatment
| Copyright © 2003-2012 Bio-Medicine. All rights reserved. ABOUT | CONTACT US | DISCLAIMER | PRIVACY POLICY | TERMS AND CONDITIONS |  |