MADISON, Wis. (AP) — Recent findings suggest that the bitter cold temperatures that gripped Wisconsin this week could also have a chilling effect on an invasive insect species that threatens the state's ash trees.

U.S. Forest Service research biologist Rob Venette co-authored a study that found temperatures around 20 degrees below zero can reduce emerald ash borer populations by half. Venette tells Wisconsin Public Radio that this week's extreme cold will likely kill up to 80 percent of the invasive Asian beetles in Wisconsin.

Emerald ash borer are responsible for killing tens of millions of ash trees across the U.S.

Wisconsin Department of Natural Resources official Andrea Diss-Torrance says the polar vortex won't cause the insect to go extinct, but the cold could buy landowners time to treat trees that haven't been infected yet.

———

Information from: Wisconsin Public Radio, http://www.wpr.org

Copyright 2019 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.

(0) comments

Welcome to the discussion.

Keep it Clean. Please avoid obscene, vulgar, lewd, racist or sexually-oriented language.
PLEASE TURN OFF YOUR CAPS LOCK.
Don't Threaten. Threats of harming another person will not be tolerated.
Be Truthful. Don't knowingly lie about anyone or anything.
Be Nice. No racism, sexism or any sort of -ism that is degrading to another person.
Be Proactive. Use the 'Report' link on each comment to let us know of abusive posts.
Share with Us. We'd love to hear eyewitness accounts, the history behind an article.