News / Science & Technology

Plant Fungicide Might Hurt Honeybees

Plant Fungicide Might Hurt Honeybeesi
X
August 13, 2013 2:07 PM
A widely used chemical used to fight plant disease is hurting honeybees in an unexpected way, according to new research. As Megan McGrath reports for VOA, it may be contributing to the widespread loss of honeybees that pollinate many fruits, vegetables, nuts and other crops.
Megan McGrath
A widely used chemical used to fight plant disease is hurting honeybees in an unexpected way, according to new research, and may be contributing to the widespread loss of honeybees that pollinate many fruits, vegetables, nuts and other crops.

Die out

Honeybee hives in the United States and elsewhere are dying and researchers are trying to understand why.

“The number of colonies that die every winter has been one in three," said Dennis VanEngelsdorp at the University of Maryland. "So on average 30 percent of the colonies have died every winter over the last six winters. And that’s an astronomical number.”

VanEngelsdorp's research team examined the pollen that honeybees carried to their hives, and found that it was contaminated with high doses of 35 different pesticides. They also found that eating certain fungicides made bees more susceptible to infection by Nosema, a deadly microbe.
 
But fungicides are essential to US agriculture, according to pesticide industry researcher Mike Leggett, with CropLife America.

"Fungicides are used, and have been used, pretty broadly, for centuries, for protection of plants from plant disease,” Leggett said.

He also points out that many of the other pesticides VanEngelsdorp found in the pollen actually made the bees less likely to be infected with Nosema.
 
“I think it’s interesting research that adds to the body of research that’s available, but I’m not really sure that the conclusions reached were… you know, well-supported,” he said.
 
Multiple stressors

Maryland farmer and beekeeper Keith Ohlinger has watched his bees die every winter. Researchers are investigating the effects of a variety of factors, including pesticides, diseases and malnutrition. Many people, including Ohlinger, think widespread bee death is caused by many different stresses at once.
 
“What I felt it was, was a compilation of a lot of little things," said Ohlinger. "I didn’t feel that there was probably one smoking gun. But there’s a division there, some people feel that it is just one thing.”
 
He does feel sure pesticides are a part of the problem.

“Maybe I’m just not educated enough, I don’t know, but my view is, if you can take a bath in it, it’s probably safe," he said. "And I don’t know many of the things that they’re putting out right now that anybody would come out of a bath in for any length of time and go, ‘Wow, that was great, I feel much better!’ You know?”
 
Honeybees are essential to agriculture. This makes the search for an answer to the bee die-off especially urgent for VanEngelsdorp's team.

“One in every three bites of food we eat are directly or indirectly pollinated by honeybees. So without honeybees, we wouldn’t have that variety in our diet,” said VanEngelsdorp.
 
Even as a third of the country's food supply depends on honeybees, a third of those bees continue to die each winter.

You May Like

Will Cuba Follow the Southeast Asia Model?

Decision to restore ties between US and Cuba has some debating whether it will lead to enhancement or regression of democracy for Communist island nation More

Kenyan Designer Finds Her Niche in Fashion Industry

‘Made in China’ fabrics underlie her success More

Report: CIA, Israel's Mossad Killed Senior Hezbollah Commander

The Washington Post story says Imad Mughniyah was killed instantly by a bomb "triggered remotely" from Tel Aviv by Mossad agents More

This forum has been closed.
Comment Sorting
Comments
     
by: Yoshi from: Sapporo
August 11, 2013 10:30 PM
I have heard Nosema for the first time. I learned online nosema is a serious disease for honey bees which has no effective treatment. To increase the number of honey bees, import is one choice for bee keepers. It is reported that import from Australia has been once prohibited in Japan because Austaralian bees were found to be infected by nosema. I hope effective treatment for nosema would be developed as early as possible. Thank you.


by: Kitagawa Keiko from: Daikanyama,TKO
August 10, 2013 7:11 PM
I'm surprised that one in three honeybees have been dying over the last six years.
That means total number of honeybees is approximately 1/700 compared with that six years ago.
But does our foods reduce to 1/700 from six years ago ?
Are we affected the dies of honeybees ?

Featured Videos

Your JavaScript is turned off or you have an old version of Adobe's Flash Player. Get the latest Flash player.
Jefferson's Library Continues to Impress, 200 Years Lateri
X
Deborah Block
January 31, 2015 12:12 AM
Two hundred years after the U.S. Congress purchased a huge collection of books belonging to former President Thomas Jefferson, it remains one of America’s greatest literal treasures and has become the centerpiece of Washington’s Library of Congress. VOA’s Deborah Block reports.
Video

Video Jefferson's Library Continues to Impress, 200 Years Later

Two hundred years after the U.S. Congress purchased a huge collection of books belonging to former President Thomas Jefferson, it remains one of America’s greatest literal treasures and has become the centerpiece of Washington’s Library of Congress. VOA’s Deborah Block reports.
Video

Video Egypt's Suez Canal Dreams Tempered by Continued Unrest

Egypt plans to expand the Suez Canal, raising hopes that the end of its economic crisis may be in sight. But some analysts say they expect the project may cost too much and take too long to make life better for everyday Egyptians. VOA's Heather Murdock reports.
Video

Video Threat of Creeping Lava Has Hawaiians on Edge

Residents of the small town of Pahoa on the Big Island of Hawaii face an advancing threat from the Kilauea volcano. Local residents are keeping a watchful eye on creeping lava. Mike O’Sullivan reports.
Video

Video Pro-Kremlin Youth Group Creatively Promotes 'Patriotic' Propaganda

As Russia's President Vladimir Putin faces international pressure over Ukraine and a failing economy, unofficial domestic groups are rallying to his support. One such youth organization, CET, or Network, uses creative multimedia to appeal to Russia's urban youth with patriotic propaganda. VOA's Daniel Schearf reports.
Video

Video Filmmakers Produce Hand-Painted Documentary on Van Gogh

The troubled life of the famous 19th century Dutch painter Vincent van Gogh has been told through many books and films, but never in the way a group of filmmakers now intends to do. "Loving Vincent " will be the first ever feature-length film made of animated hand-painted images, done in the style of the late artist. VOA’s George Putic reports.
Video

Video Issues or Ethnicity? Question Divides Nigeria

As Nigeria goes to the polls next month, many expect the two top presidential contenders to gain much of their support from constituencies organized along ethnic or religious lines. But are faith and regional blocs really what political power in Nigeria is about? Chris Stein reports.
Video

Video Rock-Consuming Organisms Alter Views of Life Processes

Scientists thought they knew much about how life works, until a discovery more than two decades ago challenged conventional beliefs. Scientists found that there are organisms that breathe rocks. And it is only recently that the scientific community is accepting that there are organisms that could get energy out of rocks. Correspondent Elizabeth Lee reports.
Video

Video Paris Attacks Highlight Global Weapons Black Market

As law enforcement officials piece together how the Paris and Belgian terror cells carried out their recent attacks, questions are being asked about how they obtained military grade assault weapons - which are illegal in the European Union. As VOA's Jeff Swicord reports, experts say there is a very active worldwide black market for these weapons, and criminals and terrorists are buying.
Video

Video Activists Accuse China of Targeting Religious Freedom

The U.S.-based Chinese religious rights group ChinaAid says 2014 was the worst year for religious freedom in China since the end of the Cultural Revolution. As Ye Fan reports, activists say Beijing has been tightening religious controls ever since Chinese leader Xi Jinping came to office. Hu Wei narrates.
Video

Video Theologians Cast Doubt on Morality of Drone Strikes

In 2006, stirred by photos of U.S. soldiers mistreating Iraqi prisoners, a group of American faith leaders and academics launched the National Religious Campaign Against Torture. It played an important role in getting Congress to investigate, and the president to ban, torture. VOA's Jerome Socolovsky reports.
Video

Video Former Sudan 'Lost Boy' Becomes Chess Master in NYC

In the mid-1980’s, thousands of Sudanese boys escaped the country's civil war by walking for weeks, then months and finally for more than a year, up to 1,500 kilometers across three countries. The so-called Lost Boys of the Sudan had little time for games. But one of them later mastered the game of chess, and now teaches it to children in the New York area. VOA’s Bernard Shusman in New York has his story.
Video

Video NASA Monitors Earth’s Vital Signs From Space

The U.S. space agency, NASA, is wrapping up its busiest 12-month period in more than a decade, with three missions launched in 2014 and two this month, one in early January and the fifth scheduled for January 29. As VOA’s Rosanne Skirble reports, the instruments being lifted into orbit are focused on Earth’s vital life support systems and how they are responding to a warmer planet.

Circumventing Censorship

An Internet Primer for Healthy Web Habits

As surveillance and censoring technologies advance, so, too, do new tools for your computer or mobile device that help protect your privacy and break through Internet censorship.
More

All About America

AppleAndroid