Featured Research

from universities, journals, and other organizations

Predicting the spread of ticks across Canada

Date:
March 5, 2012
Source:
British Ecological Society (BES)
Summary:
Researchers are watching as ticks that carry Lyme disease colonize Canada, but their research aims to predict the communities most likely to be hit by this sickness.

Researchers are watching as ticks that carry Lyme disease colonize Canada, but their research aims to predict the communities most likely to be hit by this sickness.

"Our findings will help community groups and government agencies to alert the Canadians who may be at risk of picking up Lyme disease -- those of us who like to visit the outdoors in spring and summer, when nymphal ticks are active but difficult to spot because of their size," said lead author Patrick Leighton of the University of Montreal's Faculty of Veterinary Medicine. Nymphal ticks are ticks that have not yet reached full maturity. "Identifying where the ticks are setting up home helps pinpoint where Lyme disease risk will occur before people start getting the disease."

Changes in temperature are one of the most important factors that have contributed to the spreading of tick populations across Canada since 1990. As average temperatures continue to increase over the coming decades, the area where ticks may live and reproduce will continue to reach further north. Lyme-transmitting ticks were virtually unknown in Canada in 1990, but today they may be found in areas where 18% of the country's population lives. This figure will rise to 80% in eastern Canada by 2020, according to the researchers' findings.

The parasites travel long-distance from the United States to settle new areas by attaching themselves to migratory birds, and once they have arrived, they colonize local areas by feeding on deer and small animals such as mice, squirrels and chipmunks.

The researchers' prediction model was partially built on citizen participation and it was confirmed by research that was literally undertaken in the field. Pet owners bring ticks to their family veterinarians, who are then able to provide data to public health officials regarding where the parasites were found.

Other studies have also been contributing to understanding the information in the database. "The data paint a useful picture of where and when ticks have begun colonizing different regions, identifying geographic hotspots," Leighton explained. "We visited field sites in these areas and very simply dragged blankets along the ground. Sure enough, we found significant tick populations in these areas." The findings were also confirmed by inspecting wild animals likely to carry the ticks.

Ticks themselves do not cause Lyme disease, but can pass on the infection when they bite. Lyme disease is treated with antibiotics and its symptoms include circular rashes and flu-like symptoms. Left untreated, it can have serious consequences but, say the researchers, people who visit the outdoors can protect themselves by wearing appropriate clothing or applying DEET-based insect repellents.

"This model provides us with an idea of where Lyme disease is likely to spread in the future, because the ticks eventually start to carry the bug that causes Lyme," Leighton said. "In the future it will be useful to build a model that reveals how quickly the disease will spread amongst these new tick populations."


Story Source:

The above story is based on materials provided by British Ecological Society (BES). Note: Materials may be edited for content and length.


Journal Reference:

  1. Patrick A. Leighton, Jules K. Koffi, Yann Pelcat, L. Robbin Lindsay, Nicholas H. Ogden. Predicting the speed of tick invasion: an empirical model of range expansion for the Lyme disease vector Ixodes scapularis in Canada. Journal of Applied Ecology, 2012; DOI: 10.1111/j.1365-2664.2012.02112.x

Cite This Page:

British Ecological Society (BES). "Predicting the spread of ticks across Canada." ScienceDaily. ScienceDaily, 5 March 2012. <www.sciencedaily.com/releases/2012/03/120305223610.htm>.
British Ecological Society (BES). (2012, March 5). Predicting the spread of ticks across Canada. ScienceDaily. Retrieved September 1, 2014 from www.sciencedaily.com/releases/2012/03/120305223610.htm
British Ecological Society (BES). "Predicting the spread of ticks across Canada." ScienceDaily. www.sciencedaily.com/releases/2012/03/120305223610.htm (accessed September 1, 2014).

Share This




More Health & Medicine News

Monday, September 1, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

We've Got Mites Living In Our Faces And So Do You

We've Got Mites Living In Our Faces And So Do You

Newsy (Aug. 30, 2014) A new study suggests 100 percent of adult humans (those over 18 years of age) have Demodex mites living in their faces. Video provided by Newsy
Powered by NewsLook.com
Liberia Continues Fight Against Ebola

Liberia Continues Fight Against Ebola

AFP (Aug. 30, 2014) Authorities in Liberia try to stem the spread of the Ebola epidemic by raising awareness and setting up sanitation units for people to wash their hands. Duration: 00:41 Video provided by AFP
Powered by NewsLook.com
California Passes 'yes-Means-Yes' Campus Sexual Assault Bill

California Passes 'yes-Means-Yes' Campus Sexual Assault Bill

Reuters - US Online Video (Aug. 30, 2014) California lawmakers pass a bill requiring universities to adopt "affirmative consent" language in their definitions of consensual sex, part of a nationwide drive to curb sexual assault on campuses. Linda So reports. Video provided by Reuters
Powered by NewsLook.com
New Drug Could Reduce Cardiovascular Deaths

New Drug Could Reduce Cardiovascular Deaths

Newsy (Aug. 30, 2014) The new drug from Novartis could reduce cardiovascular deaths by 20 percent compared to other similar drugs. Video provided by Newsy
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