Pick Your Community: | Hopkins | Muhlenberg | Daviess | Christian | Henderson | Lakes | McCracken | Webster

Insecticide Application Timing Vital to Native Bee Conservation

plos one 300FRANKFORT, Ky. (9/14/13) – Many homeowners may grimace at the sight of grubs, caterpillars or other pests lurking in their lawns, but understanding when and how to apply an insecticide to control these pests could have a big impact on native pollinator populations, according to a researcher from the University of Kentucky College of Agriculture, Food and Environment.
 
Jonathan Larson, a UK doctoral student, has found that when neonicotinoids, a type of systemic insecticide, are applied to flowering lawn weeds that are frequented by native bees, such as dandelions and white clovers, the chemicals can negatively impact local pollinator populations.
 
While honeybee population decline has received much attention, bumblebee numbers have also been on the decline. Much like honeybees, bumblebee population decline is related to diseases, pesticides and habitat loss or fragmentation.
 
“With honeybee populations struggling, we need to rely on native bees, such as bumblebees, to pick up the slack on plant pollination,” said Dan Potter, UK entomologist and Larson’s adviser. “Many native bees are much more efficient at pollinating certain types of crops, like tomatoes, urban flowering plants and vegetables grown in home gardens.”
 
Larson’s research, published in the journal PLOS ONE, showed that exposure to clothianidin, a neonicotinoid insecticide, negatively affected queen production. It also slowed foraging and caused higher mortality rates in worker bees within five days after exposure at plots on UK’s Spindletop Research Farm compared to control hives. When moved to an untreated field to forage for six weeks, the bees had a hard time gaining weight compared to the controls. Bumblebees exposed to chlorantraniliprole, from a relatively new class of lawn insecticides, developed and reproduced normally compared to the control hives.
 
“We’re trying to figure out ways that people can safely use insecticides and not affect native pollinators,” Larson said. “One way may be for homeowners and commercial lawn care professionals to use the newer class of insecticide instead of a neonicotinoid to control common lawn pests. Another way could be mowing treated areas.”
 
He found that when clover flowers treated with an insecticide are removed by mowing and new flowers grew to replace them, neither insecticide adversely affected bumblebee colonies.
 
“Direct contamination of the flowers is the problem, so homeowners need to remove the flower heads of weeds either before or after applying an insecticide to prevent exposure to native pollinators,” Larson said.
 
Larson is now studying the level of insecticides present in the nectar of subsequent generations of clover flowers after the field has been treated with an insecticide and the treated flowers have been removed.

The entire PLOS ONE article is available at http://bit.ly/15S6oja. Educational programs of the Kentucky Cooperative Extension Service serve all people regardless of race, color, age, sex, religion, disability, or national origin.
 
SurfKY News
Information provided by Janie Culton

© Copyright 2014 SurfKY News Group, Inc. All rights reserved. This material may not be published, broadcast, or rewritten without permission. SurfKY News encourages you to share this story by using one of the social media links below.

3/13 - 16

Stock Report

1 DOW 16,380.41
+263.17 (1.63%)    
2 S&P 1,886.76
+24.00 (1.29%)    
3 NASDAQ 4,258.44
0.00 (0.00%)    
3/13 - 16
3/13 - 16

In Other News...

Trick-or-Trot 5K Glow Run Oct. 25 at Lake Barkley State Resort Park

CADIZ, Ky. (10/18/14) — The next 5K race in the Western Kentucky State Park Race Series will have a decidedly Halloween… Read More

Muhlenberg County Celebrates New Farmer’s Market

POWDERLY, Ky. (10/18/14) — The Muhlenberg County farmers market celebrated their grand opening Wednesday, Oct. 15… Read More
3/13 - 16

Most Read This Week

October 17, 2014 10996

UK Women's Soccer Welcomes Ole Miss, No. 5/4…

in General Sports For All Sites by UK Athletics
October 14, 2014 3630

Man Tries to Beat Train, Two Life-Lined to…

in Local (Hopkins) Top News by Hopkins County Sheriff’s Office
October 15, 2014 3034

Family Business, Graphics Pros to Open Friday

in Top News For All Sites by Shawn Freels
October 14, 2014 3026

Madisonville Police Arrest Reports - Oct. 14, 2014

in Hopkins News by Madisonville Police Department
October 15, 2014 2930

Chamber Meeting and More Announced

in Local (Muhlenberg) Top News by Dorothy Walker
October 14, 2014 2753

Hopkins County Traffic Advisory

in Hopkins News by Keith Todd
October 15, 2014 2722

Woman Arrested for Domestic Dispute in the Street

in Local (Hopkins) Top News by Madisonville Police Department
October 15, 2014 2678

Madisonville Police Arrest Reports - Oct. 15, 2014

in Hopkins News by Madisonville Police Department
October 17, 2014 2615

Single Vehicle Collision Results in One Injury

in Local (Muhlenberg) Top News by Trooper S. C. Recke
October 17, 2014 2435

Woman Arrested at Taco Bell for DUI

in Local (Hopkins) Top News by Madisonville Police Department

Trending Now

October 18, 2014 1885

Muhlenberg County Celebrates New Farmer’s Market

in Local (Muhlenberg) Top News by Charles W. Riley II, SurfKY News
October 19, 2014 1529

Kentucky Energy Department Releases Virtual Solar…

in General News For All Sites by Dick Brown
October 18, 2014 1424

Grace Warehouse Hosts Singing Benefit for a White…

in Local (Hopkins) Top News by Amber Averitt, SurfKY News
October 18, 2014 1424

Happenings and Meetings - Hopkins County

in Hopkins News by Amber Averitt, SurfKY News
October 18, 2014 1383

Hooked on Science - Bloody Handprint

in General News For All Sites by Jason Lindsey
October 18, 2014 1363

Research Important When Choosing a Charity

in General News For All Sites by SurfKY News
October 18, 2014 1352

Kentucky's Jobless Rate Plummets to 6.7 Percent;…

in General News For All Sites by Kim Brannock
October 18, 2014 1341

Keeping the Faith - 'Dancing, not Marching'

in General News For All Sites by Ronnie McBrayer
October 18, 2014 1292

How Senior Donors Can Avoid Scams

in General News For All Sites by SurfKY News
October 18, 2014 967

Ladies Night Out - West

in Local (Hopkins) Top News by Tammy Holloway, SurfKY News

SurfKY News Group, Inc.
1125 Nebo Rd.  •  Madisonville, KY 42431
270.452.2727 (phone)
  •  270.452.2249 (fax)


Contact a member of our staff: www.surfky.com/contact
Copyright © 2014 SurfKY News Group, Inc.  •  Terms of Use  •  Site Map

social fbsocial twsocial yt
social gpsocial flrsocial rss