HOME >> BIOLOGY >> NEWS
Edge density key to controlling gypsy moth spread

Controlling population peaks on the edges of the gypsy moth range may help to slow their invasion into virgin territory, according to a team of researchers.

"Slowing the spread of the gypsy moth is a priority in forest management in the U.S.," says Ottar Bjornstad, associate professor of entomology and biology, Penn State. "Understanding the underlying patterns in the spread of invasive species is important for successful management."

The accidental release of the gypsy moth in 1869 in Massachusetts has led to an infestation covering more than 386,000 square miles of the U.S. Northeast. Native to Europe and Asia, gypsy moths are currently found from Maine to North Carolina and west into Wisconsin where they defoliate trees and occasionally, cause extensive damage to northern deciduous forests.

"We analyzed historical data on the spread of the gypsy moth in the U.S. and found that its invasion has been characterized by regular periods of rapid spread interspersed between periods of little expansion," says Bjornstad. "This is the first identification of pulsed invasions for an invading species."

Bjornstad; Derek M. Johnson, Department of Biology, University of Louisiana, and Andrew M. Liebhold and Patrick C. Tobin, U.S. Forest Service, used historical, county-level quarantine records as well as forest service data from more than 100,000 pheromone traps set along the expanding gypsy moth population front for their theoretical model. The pheromone trap data were collected from 1988 to 2004.

They used a theoretical model to show how an interaction between negative population growth at low densities "the Allee effect" and the existence of a few satellite seed colonies created by human transfer of the insects over long distances, explain the invasion pulses, the researchers explain today (Nov. 16) in Nature. The gypsy moth adult is flightless and usually only spreads a short distance beyond infestation boundaries. External colonies occur w
'"/>

Contact: A'ndrea Elyse Messer
aem1@psu.edu
814-865-9481
Penn State
15-Nov-2006


Page: 1 2

Related biology news :

1. Breast density helps predict breast cancer risk
2. Providence health system shows investigational osteoporosis therapy increases bone mineral density
3. Investigational therapy denosumab increased bone mineral density with twice-yearly dosing
4. Census of Marine Life explorers surprised by diversity, density of Arctic creatures
5. Hormone therapys effect on breast density is not the same for all women, Group Health study finds
6. Combination hormone therapy doubles breast density and quadruples risk of abnormal mammograms
7. Amgen investigational therapy, AMG 162, increased bone mineral density with twice yearly injection
8. Revealed -- Mosquito genes that could be controlling the spread of killer viruses
9. Hot on the TRAIL of controlling inflammation in bacterial meningitis
10. Antibody-based therapies effective at controlling malaria
11. Information processing in the central nervous system: the signalling system controlling movement

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:11/29/2018)... ... November 29, 2018 , ... ACEA Biosciences , now ... Engineering Research Center for Cell Manufacturing Technologies (CMaT). CMaT is a ... and technologies for the consistent, scalable and low-cost production of high-quality living therapeutic ...
(Date:11/27/2018)... ... November 26, 2018 , ... uBiome, the ... of the website IBDwatch and Gastroenterology Fellow at the University of Louisville, to ... around the world, Dr. Wuerth will bring to uBiome knowledge and research on ...
(Date:11/27/2018)... CARLSBAD, Calif. (PRWEB) , ... November 27, 2018 ... ... & Sons. The companies have worked together to integrate the LabArchives Classroom ... students. The combined offering will be available beginning January of 2019. ...
Breaking Biology News(10 mins):
(Date:12/5/2018)... ZOETERMEER, Netherlands (PRWEB) , ... December 05, 2018 , ... ... last week paid tribute to in the European Parliament by Carlos Moedas, the European ... High-Level Conference EU Research and Innovation in Our Daily Lives, Commissioner Moedas spoke at ...
(Date:11/28/2018)... ... 2018 , ... Earlier this month, Lajollacooks4u's Founder and Chef Jodi Abel traveled ... of truffle season. , Her first stop was Umbria, a region in ... Black Truffle Lodge in the small mountain village of Pettino, Chef Jodi was introduced ...
(Date:11/20/2018)... ... November 19, 2018 , ... Patients with missing teeth in Sandy ... from Dr. Dan Myers at THE DENTIST Centers without a referral. Dr. Myers ... for the last 20 years. He now offers skilled dental care in two practice ...
(Date:11/13/2018)... ... 13, 2018 , ... Renowned Honolulu veterinarian, Dr. Patrick Leadbeater, has begun offering ... Dr. Leadbeater, of Kahala Pet Hospital on Oahu, is a skilled surgeon ... to the island of Kauai on an almost weekly basis to perform surgery at ...
Breaking Biology Technology:
Cached News: