14 Aug 2012:
Radiation from Fukushima
Caused Butterfly Mutations, Study Says
Radioactive materials emitted during the Fukushima disaster caused physical mutations and genetic damage to butterfly populations living near the nuclear plant, a new study says. In a series of tests,
University of the Ryukyus, Okinawa
Japanese scientists found that butterflies collected from the Fukushima area about two months after the 2011 accident were more likely to have leg, antennae, and wing shape mutations
than those found elsewhere. According to their findings, published in the journal Scientific Reports
, butterflies found in areas with higher levels of radiation developed much smaller wings and eye irregularities. After breeding these butterflies in a laboratory, researchers found the next generation had numerous abnormalities not seen in the previous generation, including malformed antennae. And adult butterflies collected near Fukushima six months after the initial tests were more than twice as likely to have mutations than those found soon after the accident. “It has been believed that insects are very resistant to radiation,” said Joji Otaki, a scientist at the University of the Ryukyus, Okinawa, and lead author of the study, told BBC News. “In that sense, our results were unexpected.”
Yale Environment 360 is
a publication of the
Yale School of Forestry
& Environmental Studies
e360 on Facebook
Donate to e360
View mobile site
Subscribe to our newsletter
Subscribe to our feed:
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
Photographer Peter Essick documents the swift changes wrought by global warming in Antarctica, Greenland, and other far-flung places. View the gallery.
is now available for mobile devices at e360.yale.edu/mobile
The Warriors of Qiugang
, a Yale Environment 360
video that chronicles the story of a Chinese village’s fight against a polluting chemical plant, was nominated for a 2011 Academy Award for Best Documentary (Short Subject).
Watch the video.
Top Image: aerial view of Iceland
. © Google & TerraMetrics.
In a Yale Environment 360
video, photographer Pete McBride documents how increasing water demands have transformed the Colorado River, the lifeblood of the arid Southwest. Watch the video.