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Research results confirm need for protection against ticks that carry Lyme disease
Date:7/20/2010

ck. The third point of the triangle is the environment. "If you remove one of these components, the system fails and the disease can no longer be maintained.

"The natural landscapes of Illinois are continually being fragmented and evolving as urban development and agriculture increase," Rydzewski said.

"It's important to understand these host/vector/pathogen interactions in a dynamic landscape. Studying this multi-host pathogen can help us to discover ways to manage either the landscape or the host in order to control the vector and the pathogen."

The white-footed mouse is a particularly competent host at maintaining the bacteria in the environment. White-tailed deer and migratory birds are important dispersal agents for ticks as they're capable of traveling long distances and depositing ticks in new areas. Rydzewski believes that deer following the river may account for the increased number of ticks found along the Des Plaines River corridor.

In the Piatt County portion of the survey, from June through October of 2005 to 2009, on approximately 24 nights per year, 200 small mammal traps within four different habitat areas were set, baited with sunflower seeds at night and retrieved the next morning. Once the traps were collected, mammals were identified, sexed and ear-tagged, ticks were removed and an ear punch was taken, which is a 2-millimeter circle biopsy of ear tissue. The ticks and ear punches were tested for presence of the bacteria that causes Lyme disease infection.

A different technique was used for the survey within forest preserves in Cook, Lake and DuPage counties. At 36 sites in the tri-county area in the spring and summer months of 2008 and 2009, tick drag cloths were used. The cloths are made from 1-square-meter corduroy attached to a wooden dowel which is dragged along the trail's edges. Every 30 seconds, the cloth was checked and ticks were removed and placed in sealed vials to be tested. Using thi
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Contact: Debra Levey Larson
dlarson@illinois.edu
217-244-2880
University of Illinois College of Agricultural, Consumer and Environmental Sciences
Source:Eurekalert  

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