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Radiation level in tuna off Oregon coast tripled after Fukushima disaster

Published time: April 29, 2014 16:18
Edited time: May 01, 2014 10:07
AFP Photo / Yoshikazu Tsuno

AFP Photo / Yoshikazu Tsuno

While the state of Oregon gears up to test its shores for radioactive contamination from Japan’s Fukushima nuclear disaster, university scientists have found that radiation levels in some albacore tuna caught off its coast have tripled.

According to researchers at the Oregon State University, the results came after tests analyzed the cesium levels in 26 tuna caught prior to the 2011 nuclear calamity – as far back as 2008 – and those caught after the accident.

Although the levels of radioactive isotopes in some of the tuna tripled after the disaster, the researchers found they are still “a thousand times lower” than the safety standards outlined by the US Department of Agriculture.

"A year of eating albacore with these cesium traces is about the same dose of radiation as you get from spending 23 seconds in a stuffy basement from radon gas," the study’s lead author, Delvan Neville said to Oregon’s Statesman Journal.

Still, Neville added that the discovery of any amount of radiation is significant.

"You can't say there is absolutely zero risk because any radiation is assumed to carry at least some small risk," he said. "But these trace levels are too small to be a realistic concern."

Researchers stated that the migration paths of the tuna could also affect the levels of radiation going forward. Most of the 3-year-old tuna tested had no traces of Fukushima radiation, but 4-year-old tuna – which likely traveled through the radioactive plume a couple of times – had higher cesium levels. Continued migration could increase cesium levels further, but the researchers said it would still fall well below maximum safety levels.

Since the results did reveal a spike in radiation, though, the researchers will be expanding their study beyond Oregon to test a larger number of tuna across the West Coast.

"The presence of these radioactive isotopes is actually helping us in an odd way – giving us information that will allow us to estimate how albacore tuna migrate between our West Coast and Japan," Neville told the Journal.

Meanwhile, Oregon state itself plans to hold its next quarterly radiation test on May 13. Back in February, Ken Buesseler of the Woods Hole Oceanographic Institution stated that a plume of radioactive water from Fukushima would likely hit the US West Coast by April 2014. Buesseler said the plume is likely too diluted to pose a health concern to Americans or the habitat, but added that only testing will be able to confirm his belief.

Comments (35)

 

Oleg Syretz 26.06.2014 00:32

About 30% of California women are having visible Adam's apples as a result of exposure to I-131 and Cs -137 isotopes

 

karl jones 11.06.2014 01:34

@retire sorry worry about real things? Maybe the radiation has done slightly more damage to You than you can know, what so this disaster is not a real thing to worry about? I beg to differ!

 

Shades shady 20.05.2014 06:34

Oregon Coast Retire , You might like to think things are all good in the Pacific ocean. In the recent week's and months the North American west coast is having a mass die off of Star Fish. They have there arms/legs to rot and then they rip there own limbs off 1 by 1 until they die. The Star Fish is like the garbage man and controlls the muscle populations. Take a look at the great lakes where the Zebra muscles live without being kept in check, it looks like a waste land with no life at all.

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