Skip to main content

Stingless wasps making progress in attack on emerald ash borer

  • Author:
  • Updated:
    Original:

The state agriculture department is finding that the weapon launched two years ago to combat emerald ash borer could be working.

The Star Tribune reports tiny parasitic stingless wasps, a native of China and a natural predator of the invasive beetle, were released in infested areas of Winona, Houston County and the Twin Cities.

Monika Chandler, Minnesota Department of Agriculture Biological Control Program Coordinator, says evidence collected in Winona this fall show the wasps are reproducing and attacking the ash borers. There's also evidence that the wasps are traveling, some found a half mile from their release sites, Chandler said.

North American ash trees have no natural resistance to the pests, which are also native to China, so infestation is always fatal to the tree, according to the Pioneer Press.

The emerald ash borer is regarded as a threat to Minnesota's nearly 1 billion ash trees.

In Minneapolis, a recently-approved tax levy will allow the city to take down 40,000 ash trees over the next eight years as part of a $9 million project to blunt the impact of the invasive pest.

Although the wasps are proving to be a successful weapon so far, they may not win the battle, the Pioneer Press points out. For now, agriculture officials just hope to slow the emerald ash borers' spread.

Next Up

basketball unsplash stock

High school basketball games canceled after adult 'threatens to bring gun'

The boys and girls varsity and JV games between South St. Paul Secondary and Two Rivers High were canceled.

Screen Shot 2023-01-31 at 9.18.37 PM

Bed, Bath & Beyond closing 86 more stores, including in Bloomington

The struggling chain closed a store in St. Cloud last year.

Andy Trowbridge

Tributes to KARE 11 sports producer who has died at age 35

KARE says Andrew Trowbridge died following a 'brief illness.'

LoganSlackDakotaCoJail

Man pleads guilty to murder of Inver Grove Heights father

Michael Chang-Beom Lee, 43, was killed during a burglary at his home.

Eggs at Hy-Vee

Price comparison: How much do eggs cost at Twin Cities grocery stores?

Prices have been spiking, so where can you find the cheapest eggs?

KwonFloodFOX9

FOX 9 promotes Hannah Flood to anchor, adds new reporter

Hannah Flood will co-anchor mornings while Se Kwon joins the team.

Carjacking pursuit in Little Canada

Watch: Suspects drive wrong-way on I-35E, before carjacking separate vehicles

The Ramsey County Sheriff's Office said the suspects are still at large.

RestaurantFireSTP

St. Paul restaurant damaged in Sunday night fire

The fire department said the fire is considered to be "accidental."

Lake Superior.

MPCA: Minnesota's emissions fell by 23% between 2005 and 2020

Clean energy investments have driven the decline.

Related

MDA enlisting dogs to detect emerald ash borer

The Minnesota Department of Agriculture is hoping trained detection dogs will help locate ash trees infested with the invasive beetles. The organization Working Dogs for Conservation claims to have found encouraging results in training dogs to find emerald ash borers.

Stingless wasps to be released in Winona County to fight ash borers

The wasps will be released in Great River Bluffs State Park in Winona County, where a recent borer infestation was reported. The state has released the wasps on four separate occasions since the pest was first discovered in 2009.

State officials to release stingless wasps in St. Paul to combat ash borer

Agriculture officials hope the insects -- a natural enemy of the ash borer -- will help combat a newly discovered infestation of the pest near the city's historic Summit Avenue.

State tries new ways to fight Emerald Ash Borers

Minnesota officials are entering their fourth year of battling Emerald Ash Borer in a desperate attempt to save the state's nearly 1 billion ash trees. The Pioneer Press reports on some not-so-traditional methods employed by the department of agriculture to stop the exotic beetle. One interesting method involves gluing several dead Emerald Ash Borers to a leaf and leaving them by the Mississipi River in hopes that a male will come by to mate and get stuck.