31 Oct 2012:
U.S. Honeybees Have Developed
Resistance to Antibiotic, Study Says
Honeybees in the U.S. have developed widespread resistance to the antibiotic tetracycline
, likely as a result of decades of exposure to preventive antibiotics in domesticated hives, a new study has found. In tests conducted on bees in several countries, scientists from Yale University say they identified eight tetracycline resistance genes in U.S. honeybees that were largely absent in bees found in places where the antibiotics are banned. In the U.S., the use of oxytetracycline — a compound similar to tetracycline — has been common since the 1950s to help prevent outbreaks of “foulbrood,” a bacterial disease that can devastate honeybee hives. “There’s a pattern here, where the U.S. has these genes and the other [countries] don’t,” said Nancy Moran, a lead author of the study published in the journal mBio
. The authors warn that the treatment meant to prevent disease and strengthen honeybee hives in the U.S. may have actually weakened the bees’ ability to fight off other pathogens.
Yale Environment 360 is
a publication of the
Yale School of Forestry
& Environmental Studies
Yale Environment 360
articles are now available in Spanish and Portuguese on Universia
, the online educational network. Visit the site.
Business & Innovation
Policy & Politics
Pollution & Health
Science & Technology
Antarctica and the Arctic
Central & South America
Tribal people and ranchers join together to stop a project that would haul coal across their Montana land. Watch the video.
is now available for mobile devices at e360.yale.edu/mobile
A, aerial view of why Europe’s per capita carbon emissions are less than 50 percent of those in the U.S. View the photos.
The 2015 Yale e360 Video Contest winner documents a Northeastern town's bitter battle over a wind farm. Watch the video.
video series looks at the staggering amount of food wasted in the U.S. – a problem with major human and environmental costs. Watch the video.
video goes onto the front lines with Colorado firefighters confronting deadly blazes fueled by a hotter, drier climate. Watch the video.
A three-part series Tainted Harvest
looks at the soil pollution crisis in China, the threat it poses to the food supply, and the complexity of any cleanup. Read the series.